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TEL INTEGRATEDMULTIPURPOSE PROJECT,
ODISHA
GOVERNMENT OF ODISHAWATER RESOURCES DEPARTMENT
WAPCOS LIMITED(International Consultant in water Resources
Power and Infrastructure, Development)76-C, Sector – 18, Institutional Area, Gurgaon,Haryana, India, Tele-fax : + 91-124-2399427
E-mail: [email protected]
Feasibility Report
CONTENTS
TEL INTEGRATED MULTIPURPOSE PROJECTCONTENTS
Brief Summary
Salient Features
Chapter- 1 Introduction
Chapter- 2 Physical Features
Chapter- 3 Interstate Aspects
Chapter- 4 Survey & Investigations
Chapter- 5 Project Hydrology
Chapter- 6 Design Features
Chapter- 7 Irrigation Planning
Chapter- 8 Command Area
Chapter- 9 Hydrogeology
Chapter- 10 Reservoir Simulation Studies
Chapter- 11 Power Potential Studies
Chapter- 12 Environment, Ecology & Forest Aspects
Chapter- 13 Cost Estimate
Chapter- 14 Economic Benefits & Justification
1
Brief Summary of Tel Integrated Multipurpose project
The proposed project is envisaged to create irrigation and Hydro-power development. It is
proposed to construct a dam across river Tel, a tributary of Mahanadi at a location with
longitude 82019’32’’ E and latitude 19049’24’’N and about 2 Km upstream (along the course of
river) of the interstate border of Orissa with Chhattisgarh. The FRL of the dam is proposed at
RL 500m with maximum height of dam is proposed to be 87m to have water spread area of
1330 ha. The generation of hydro-power at two power stations located on the right side of the
Tel River near village Phatki in Orissa territory will be done by connecting a Head Race Tunnel
(diameter 2.5 m and 270 m long) from Tel dam. The barrage at Phatki of length 79m and
height 5.4 m with Full Pond Level 325.1 m across Phatki Nallah, a tributary of Tel River. A
main canal of length 23.395 km will take off from the Barrage at Phatki with FSL 324.5 m and
it will cross over the Banjari Nallah through an aqueduct. The CCA of the project is 4025.329
ha beyond Banjari Nallah, and 5878.132 ha between Phatki and Banjari Nallah . Thus, a total
command area of 9903 ha will be served by Tel irrigation Project. Apart from this,
stabilization of 2000 ha command area of Phuljhari weir across Banjari Nallah will also be
done through this irrigation scheme. In addition, 18 MW of power will also be generated. The
total land required for acquisition is 1636.6 ha, of which private land is 150.0 ha , forest land
is 637.6 ha and 849.0 ha of Govt Land. The total estimated cost of the project including
direct and indirect changes is Rs. 1749.20 crores.
SALIENT FEATURES
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -i-Haryana –122015
TEL INTEGRATED MULTIPURPOSE PROJECT
SALIENT FEATURES
1 – TEL DAM1.1 LOCATION
(a) State Orissa
(b) District Nabarangpur
(c) (i) Latitude 19° 49' 24”
(d) (ii) Longitude 82° 19' 32”
(e) River Tel
(f) LocationDam Site Near Village Karlaparah inNabarangpur District
(g) Topsheet 65-I/5, 65-I/9
1.2 HYDROLOGY
(a) Catchment Area(Sq Km) 480
(b) Maximum Annual Rainfall(mm) 2021
(c) Minimum Annual Rainfall(mm) 924
(d) Mean Annual Rainfall(mm) 1461
(e) 75% Dependable Rainfall of
(i) Catchment (mm) 1277
(ii) Ayacut (mm) 1457.2
(f)Maximum Design Flood Discharge(Cumecs)
5000
1.3 RESERVOIR
(a) Dead Storage Capacity (MCM.) 20
(b) Gross Storage Capacity (MCM.) 238.76
(c) Dead Storage Level(DSL)(m) 465
(d) Full Reservoir Level(FRL)(m) 500
1.4 RUNOFF AT THE DAM SITE
(a) At 50% dependability( MCM) 199
(b) At 75% dependability( MCM) 131
(c) At 90% dependability( MCM) 81
1.5 HEAD WORKS
A. Main Dam
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -i-Haryana –122015
TEL INTEGRATED MULTIPURPOSE PROJECT
SALIENT FEATURES
1 – TEL DAM1.1 LOCATION
(a) State Orissa
(b) District Nabarangpur
(c) (i) Latitude 19° 49' 24”
(d) (ii) Longitude 82° 19' 32”
(e) River Tel
(f) LocationDam Site Near Village Karlaparah inNabarangpur District
(g) Topsheet 65-I/5, 65-I/9
1.2 HYDROLOGY
(a) Catchment Area(Sq Km) 480
(b) Maximum Annual Rainfall(mm) 2021
(c) Minimum Annual Rainfall(mm) 924
(d) Mean Annual Rainfall(mm) 1461
(e) 75% Dependable Rainfall of
(i) Catchment (mm) 1277
(ii) Ayacut (mm) 1457.2
(f)Maximum Design Flood Discharge(Cumecs)
5000
1.3 RESERVOIR
(a) Dead Storage Capacity (MCM.) 20
(b) Gross Storage Capacity (MCM.) 238.76
(c) Dead Storage Level(DSL)(m) 465
(d) Full Reservoir Level(FRL)(m) 500
1.4 RUNOFF AT THE DAM SITE
(a) At 50% dependability( MCM) 199
(b) At 75% dependability( MCM) 131
(c) At 90% dependability( MCM) 81
1.5 HEAD WORKS
A. Main Dam
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -i-Haryana –122015
TEL INTEGRATED MULTIPURPOSE PROJECT
SALIENT FEATURES
1 – TEL DAM1.1 LOCATION
(a) State Orissa
(b) District Nabarangpur
(c) (i) Latitude 19° 49' 24”
(d) (ii) Longitude 82° 19' 32”
(e) River Tel
(f) LocationDam Site Near Village Karlaparah inNabarangpur District
(g) Topsheet 65-I/5, 65-I/9
1.2 HYDROLOGY
(a) Catchment Area(Sq Km) 480
(b) Maximum Annual Rainfall(mm) 2021
(c) Minimum Annual Rainfall(mm) 924
(d) Mean Annual Rainfall(mm) 1461
(e) 75% Dependable Rainfall of
(i) Catchment (mm) 1277
(ii) Ayacut (mm) 1457.2
(f)Maximum Design Flood Discharge(Cumecs)
5000
1.3 RESERVOIR
(a) Dead Storage Capacity (MCM.) 20
(b) Gross Storage Capacity (MCM.) 238.76
(c) Dead Storage Level(DSL)(m) 465
(d) Full Reservoir Level(FRL)(m) 500
1.4 RUNOFF AT THE DAM SITE
(a) At 50% dependability( MCM) 199
(b) At 75% dependability( MCM) 131
(c) At 90% dependability( MCM) 81
1.5 HEAD WORKS
A. Main Dam
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -ii-Haryana –122015
(a) Type Rockfill Dam
(b) Average Height of Dam (m) 87
(c) Top Width of Dam(m) 10
(d) Slope
U/s 2.5:1 to 3:1
D/s 2:1 to 2.75:1
(e) Length of Rockfill Dam(m) 3810
(f) Top Bank Level (TBL) (m) 505
B. Spillway
(a) Type Ogee spillway
(b) Length of Spillway(m) 132
(c) Average height of spillway(m) 47
(d) Crest level of Spillway(m) 492
PH - I
(a) No. & Size of units to be installed 2 x 4 MW
(b) Design Discharge 13.6 cumecs
(c) Type of turbine Francis
(d) Installed capacity 8 MW
(e) Design Head (m) 66
(f)Energy Generation in 50% dependableyear
20.85 MU
PH - II
(a) No. & Size of units to be installed 2 x 5 MW
(b) Design Discharge 10.8 cumecs
(c) Type of turbine Francis
(d) Installed capacity 10 MW
(e) Design Head (m) 82.8
(f)Energy Generation in 50% dependableyear
21.66 MU
2- BARRAGE AT PHATKI
2.1 LOCATION
(a) State Orissa
(b) District Nabarangpur
(c) (i) Latitude 19° 51' 41”
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -ii-Haryana –122015
(a) Type Rockfill Dam
(b) Average Height of Dam (m) 87
(c) Top Width of Dam(m) 10
(d) Slope
U/s 2.5:1 to 3:1
D/s 2:1 to 2.75:1
(e) Length of Rockfill Dam(m) 3810
(f) Top Bank Level (TBL) (m) 505
B. Spillway
(a) Type Ogee spillway
(b) Length of Spillway(m) 132
(c) Average height of spillway(m) 47
(d) Crest level of Spillway(m) 492
PH - I
(a) No. & Size of units to be installed 2 x 4 MW
(b) Design Discharge 13.6 cumecs
(c) Type of turbine Francis
(d) Installed capacity 8 MW
(e) Design Head (m) 66
(f)Energy Generation in 50% dependableyear
20.85 MU
PH - II
(a) No. & Size of units to be installed 2 x 5 MW
(b) Design Discharge 10.8 cumecs
(c) Type of turbine Francis
(d) Installed capacity 10 MW
(e) Design Head (m) 82.8
(f)Energy Generation in 50% dependableyear
21.66 MU
2- BARRAGE AT PHATKI
2.1 LOCATION
(a) State Orissa
(b) District Nabarangpur
(c) (i) Latitude 19° 51' 41”
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -ii-Haryana –122015
(a) Type Rockfill Dam
(b) Average Height of Dam (m) 87
(c) Top Width of Dam(m) 10
(d) Slope
U/s 2.5:1 to 3:1
D/s 2:1 to 2.75:1
(e) Length of Rockfill Dam(m) 3810
(f) Top Bank Level (TBL) (m) 505
B. Spillway
(a) Type Ogee spillway
(b) Length of Spillway(m) 132
(c) Average height of spillway(m) 47
(d) Crest level of Spillway(m) 492
PH - I
(a) No. & Size of units to be installed 2 x 4 MW
(b) Design Discharge 13.6 cumecs
(c) Type of turbine Francis
(d) Installed capacity 8 MW
(e) Design Head (m) 66
(f)Energy Generation in 50% dependableyear
20.85 MU
PH - II
(a) No. & Size of units to be installed 2 x 5 MW
(b) Design Discharge 10.8 cumecs
(c) Type of turbine Francis
(d) Installed capacity 10 MW
(e) Design Head (m) 82.8
(f)Energy Generation in 50% dependableyear
21.66 MU
2- BARRAGE AT PHATKI
2.1 LOCATION
(a) State Orissa
(b) District Nabarangpur
(c) (i) Latitude 19° 51' 41”
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -iii-Haryana –122015
(d) (ii) Longitude 82° 22' 39”
(e) River Pipaljore Nallah
(f) LocationAt Phatki Village in NabarangpurDistrict
(g) Topsheet 65-I/5, 65-I/9
2.2 HYDROLOGY
(a) Catchment Area(Sq Km) 20
(b) Maximum Monsoon Rainfall(mm) 1798
(c) Minimum Annual Rainfall(mm) 85
(d) Mean Annual Rainfall(mm) 1387
(e) Maximum Design Flood Discharge 166
2.3 RUNOFF AT THE SITE
(a) At 50% dependability( MCM) 8.3
(b) At 75% dependability( MCM) 5.5
(c) At 90% dependability( MCM) 3.4
2.4 HEAD WORKS
(a) Length of Barrage (m) 79
(b) Height of Barrage (m) 5.4
(c) Full Pond Level (m) 325.1
(d) Maximum Water Level (m) 328.1
(e)Maximum height of crest above deepest
foundation (m)2.5
(f)Type of Energy dissipation arrangement Discharge being very small, no
specific dissipation device required
(g) Guide bunds/ afflux bunds
(g.1) Length 95
(g.2) Top Level 329.1
(h) Head Regulator (ONE)
(h.1) Total Length (m) 49.45
(h.2) Height above deepest foundation (m) 8.4
(h.3) Length of Bay (m) 5
(h.4) Sill Level (m) 324.2
(h.5) No. of Gates One
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -iii-Haryana –122015
(d) (ii) Longitude 82° 22' 39”
(e) River Pipaljore Nallah
(f) LocationAt Phatki Village in NabarangpurDistrict
(g) Topsheet 65-I/5, 65-I/9
2.2 HYDROLOGY
(a) Catchment Area(Sq Km) 20
(b) Maximum Monsoon Rainfall(mm) 1798
(c) Minimum Annual Rainfall(mm) 85
(d) Mean Annual Rainfall(mm) 1387
(e) Maximum Design Flood Discharge 166
2.3 RUNOFF AT THE SITE
(a) At 50% dependability( MCM) 8.3
(b) At 75% dependability( MCM) 5.5
(c) At 90% dependability( MCM) 3.4
2.4 HEAD WORKS
(a) Length of Barrage (m) 79
(b) Height of Barrage (m) 5.4
(c) Full Pond Level (m) 325.1
(d) Maximum Water Level (m) 328.1
(e)Maximum height of crest above deepest
foundation (m)2.5
(f)Type of Energy dissipation arrangement Discharge being very small, no
specific dissipation device required
(g) Guide bunds/ afflux bunds
(g.1) Length 95
(g.2) Top Level 329.1
(h) Head Regulator (ONE)
(h.1) Total Length (m) 49.45
(h.2) Height above deepest foundation (m) 8.4
(h.3) Length of Bay (m) 5
(h.4) Sill Level (m) 324.2
(h.5) No. of Gates One
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -iii-Haryana –122015
(d) (ii) Longitude 82° 22' 39”
(e) River Pipaljore Nallah
(f) LocationAt Phatki Village in NabarangpurDistrict
(g) Topsheet 65-I/5, 65-I/9
2.2 HYDROLOGY
(a) Catchment Area(Sq Km) 20
(b) Maximum Monsoon Rainfall(mm) 1798
(c) Minimum Annual Rainfall(mm) 85
(d) Mean Annual Rainfall(mm) 1387
(e) Maximum Design Flood Discharge 166
2.3 RUNOFF AT THE SITE
(a) At 50% dependability( MCM) 8.3
(b) At 75% dependability( MCM) 5.5
(c) At 90% dependability( MCM) 3.4
2.4 HEAD WORKS
(a) Length of Barrage (m) 79
(b) Height of Barrage (m) 5.4
(c) Full Pond Level (m) 325.1
(d) Maximum Water Level (m) 328.1
(e)Maximum height of crest above deepest
foundation (m)2.5
(f)Type of Energy dissipation arrangement Discharge being very small, no
specific dissipation device required
(g) Guide bunds/ afflux bunds
(g.1) Length 95
(g.2) Top Level 329.1
(h) Head Regulator (ONE)
(h.1) Total Length (m) 49.45
(h.2) Height above deepest foundation (m) 8.4
(h.3) Length of Bay (m) 5
(h.4) Sill Level (m) 324.2
(h.5) No. of Gates One
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -iv-Haryana –122015
(h.6) Types of Gates Vertical
(h.7) Size of Gates 5.4 m x 1.4 m
2.5 DISTRIBUTION
(a) Gross Commandable Area (GCA) (Ha.) 15474.157
(b) Culturable Command Area (CCA) (Ha.) 9903.46
(c) Percentage of GCA to CCA (%) 64%
(d) Intensity of Irrigation (Kharif) (%) 86.2%
(e) Intensity of Irrigation (Rabi) (%) 60.1%
(f) Area irrigated during Kharif (Ha.) 7680
(g) Area irrigated during Rabi (Ha.) 5360
(f) Annual Irrigation (Ha.) 13040
7. ESTIMATE OF COST
Unit I – Civil Works(a) Direct Charges 1555.55 Crores
(b) Indirect Charges 14.89 Crores
(c) Total Civil Works 1570.45 Crores
Unit – II Main Canal, Branch & Distribution System(a) Direct Charges 132.41 Crores
(b) Indirect Charges 1.32 Crores
(c) Total Civil Works 133.73 Crores
Unit – III Electro-Mechanical Works(a) TOTAL COST 45 Crores
TOTAL COST OF THE PROJECT 1749.20 CroresB/C Ratio 1.14
FIRR 9.18%
EIRR 10.88%
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -iv-Haryana –122015
(h.6) Types of Gates Vertical
(h.7) Size of Gates 5.4 m x 1.4 m
2.5 DISTRIBUTION
(a) Gross Commandable Area (GCA) (Ha.) 15474.157
(b) Culturable Command Area (CCA) (Ha.) 9903.46
(c) Percentage of GCA to CCA (%) 64%
(d) Intensity of Irrigation (Kharif) (%) 86.2%
(e) Intensity of Irrigation (Rabi) (%) 60.1%
(f) Area irrigated during Kharif (Ha.) 7680
(g) Area irrigated during Rabi (Ha.) 5360
(f) Annual Irrigation (Ha.) 13040
7. ESTIMATE OF COST
Unit I – Civil Works(a) Direct Charges 1555.55 Crores
(b) Indirect Charges 14.89 Crores
(c) Total Civil Works 1570.45 Crores
Unit – II Main Canal, Branch & Distribution System(a) Direct Charges 132.41 Crores
(b) Indirect Charges 1.32 Crores
(c) Total Civil Works 133.73 Crores
Unit – III Electro-Mechanical Works(a) TOTAL COST 45 Crores
TOTAL COST OF THE PROJECT 1749.20 CroresB/C Ratio 1.14
FIRR 9.18%
EIRR 10.88%
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon -iv-Haryana –122015
(h.6) Types of Gates Vertical
(h.7) Size of Gates 5.4 m x 1.4 m
2.5 DISTRIBUTION
(a) Gross Commandable Area (GCA) (Ha.) 15474.157
(b) Culturable Command Area (CCA) (Ha.) 9903.46
(c) Percentage of GCA to CCA (%) 64%
(d) Intensity of Irrigation (Kharif) (%) 86.2%
(e) Intensity of Irrigation (Rabi) (%) 60.1%
(f) Area irrigated during Kharif (Ha.) 7680
(g) Area irrigated during Rabi (Ha.) 5360
(f) Annual Irrigation (Ha.) 13040
7. ESTIMATE OF COST
Unit I – Civil Works(a) Direct Charges 1555.55 Crores
(b) Indirect Charges 14.89 Crores
(c) Total Civil Works 1570.45 Crores
Unit – II Main Canal, Branch & Distribution System(a) Direct Charges 132.41 Crores
(b) Indirect Charges 1.32 Crores
(c) Total Civil Works 133.73 Crores
Unit – III Electro-Mechanical Works(a) TOTAL COST 45 Crores
TOTAL COST OF THE PROJECT 1749.20 CroresB/C Ratio 1.14
FIRR 9.18%
EIRR 10.88%
CHAPTER-1
Introduction
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 1 - 1Haryana –122015
CHAPTER - 1
INTRODUCTION
1.1 INTRODUCTION
Odisha is situated in the east coastal region of the country. Its geographical area is
almost 4.74% of India and its population is 36.7 million (2001census), about 3.57 per
cent of India’s population. Agriculture remains the backbone of the economy as more
than 80 per cent of the workforce is engaged here. Development of irrigated
agriculture has played a major role in the economic growth and poverty alleviation
through successive plan periods.
Agro-climatic conditions have a great deal of diversity. The standard classification of
the state in terms of agro-climatic zones is four-fold: (i) Coastal Plains; (ii) Central
Table Land; iii) Northern Plateau and iv) The Eastern Ghats. Regional geographers,
however, simplify this further and speak in terms of two agro-climatic regions: Odisha
Coastal region (part of the upper Eastern Coastal Plains) and Odisha Highland
Region.
The catchment area falls in Odisha Highland Region, which is rugged, and having
undulating topography and the aboriginal races (Bhuinyas and the Gonds were the
main inhabitants of this forest-clad region).
As the catchment region is delineated by features (as explained briefly in above paras)
responsible in formulation of Tel Integrated Project, the state government of Odisha
has undertaken through WAPCOS, the preparation of Feasibility cum Detailed Project
Report for Irrigation and Hydro-power development.
Since, Irrigation is considered the basic means for improvement in agriculture the
implementation of this project leads to improvement in rural economy and the quality
of life of the people including tribal population.
1.2 AIM AND OBJECTIVES
Tel Integrated Project is aimed to construct/generate
a) Dam of length 3682 m across Tel River, a tributary of river Mahanadi at a location
of 2 Km upstream of interstate border of Chhattisgarh and Odisha with a catchment
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 1 - 2Haryana –122015
area of 480 Sq. Km. The FRL of the dam is 500 m with Maximum height of the
dam to be 87 m to have water spread area of 1330 ha.
b) Generation of Hydro-power at power station located on the right side of the Tel
river near village Phatki in Odisha territory by connecting an HRT of length about
1.35 Km from Tel dam.
c) Barrage at Phatki of length 79 m and height 5.4 m with FSL 325 m across Phatki
Nallah, a tributary of Tel River.
d) A main canal of length 23.395 Km will take off from the Barrage at Phatki with
FSL 324.5 m and it will cross over the Banjari Nallah through an aqueduct.
e) A feeder canal is proposed to take off from the main canal before crossing the
Banjari Nallah to augment the flow of Phuljhari diversion weir across Banjari
Nallah so as to serve the command of existing Phuljhari minor irrigation project.
The main canal after crossing Banjari Nallah through an aqueduct is also proposed
to irrigate the command area lying on the right hand side of Banjari Nallah. Apart
from this, the main canal, in the reach between Phatki barrage and Banjari Nallah,
will also irrigate the command area lying between these two nallah (i.e., Phatki and
Banjari Nallah).
f) The breakup of command area which is proposed to be covered by proposed Tel
irrigation project is as under.
i. CCA of 4025.329 ha beyond Banjari Nallah
ii. CCA of 5878.132 ha between Phatki and Banjari Nallah
Apart from this, stabilization of 2000 ha command area of Phuljhari weir across
Banjari Nallah will also be done through this irrigation scheme. As such, a total
command area of 9903 ha will be served by Tel irrigation project apart from
generating power of 18 MW (Design Energy 27.42 MU).
1.3 HISTORY AND BACKGROUND
The state is blessed with abundant water resources & extensive network of rivers &
streams. For effective utilization & management of water resources, river basin plans
for all the eleven river basins of the state have been prepared and steps are being taken
to set up River Basin Organization.
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 1 - 3Haryana –122015
Irrigation is the main input of Agriculture without which Agriculture cannot sustain its
full growth. Irrigation Development not only correlates to Agriculture but also to
other Socio-Economic aspects like industry, navigation, hydropower, pisciculture,
water supply etc. With this objective, top priority has all along been given in Five-
Year Plans for irrigation development. During pre-plan period, 1.83 lakh hectare of
irrigation potential was created. Attempts have been made to achieve irrigation
development in planned manner by implementing different schemes such as AIBP,
RIDE, BKVY, RR&R, Bharat Nirman & RLTAP etc. By the end of March-2006,
21.59lakh hectare of irrigation potential has been created using surface & ground
water.
1. Irrigation potential created is about 1.45 lakh ha with 61,799 PLIPs.
1.3.1 Water Resources at a Glance
1. Net irrigation potential 2603.06 thousand ha (44.12% of total irrigable area)
2. Ground water resources 2101128 hectare.mtr
3. Utilized 14.79%
4. Major/ medium flow irrigation 122071thou.ha
5. Lift irrigation (minor) 347.39thou. ha
6. Flow irrigation (Minor) 454.49 thou.ha
7. Others 570.47 thou.ha
1.3.2 Initiatives by Govt. of Odisha
a) Biju Krushka Vikash Yojana (BKVY)
The scheme was launched by the State Government in the year 2001 with an objective
to revive derelict projects and construction of new minor & irrigation projects through
people’s participation. As per the scheme, the beneficiaries will contribute 10% of the
capital cost of the project in schedule area & 20% of the capital cost in non- schedule
areas. After completion of the project, the operation & maintenance will be entirely
controlled by the beneficiaries and are exempted from payment of water tax to
Government.
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 1 - 4Haryana –122015
b) Pani Panchayat
Adopting reform measures in irrigation sectors, participatory irrigation management
(Pani Panchayat) programme has been taken up in mission mode approach and
extended to all command area under major, medium and minor (Flow & lift) irrigation
sector. Legal status has been provided to Pani Panchayat by enacting Pani Panchayat
Act, 2002 & Pani Panchayat Rule, 2003.
Keeping in view such schemes (as mentioned above), the Govt. of Odisha has
undertaken to construct a Dam across Tel river and Four Bay Diversion Dam/Barrage
across its tributaries which facilitates Irrigation and Power Generation thereby
improving the living standards of the people (especially farmers) surviving in and
around the project area.
1.4 LOCATION AND ACCESSIBILITY
Location:
Sl.
No.
Name of
Project
Latitude Longitude
1. Tel Dam 19049’24”N 82019’32”E
2. Banjari Barrage 19049’0”N 82029’0”E
Accessibility:
The project is well connected by road, rail and air. Jeypore is the nearest railway
station which is about 95 Km from the location of the project.
1.5 CLIMATE
1.5.1 Rainfall
The project catchment lies in the western side of Eastern Ghat and has a highly rugged
topography bounded by ridges kondhan hills whose elevation varies from 90 to 1350
meters with highest peak named Galigonda at about 1630 meters. The catchment is
affected by south west monsoon from June to October when it receives the maximum
rainfall. Mean annual/monsoon rainfall charts for Odisha based on available data
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 1 - 5Haryana –122015
shows that the annual catchment rainfall varies between 1400 and 1500mm. The four
months (June to September) of monsoon is about 1200mm.
1.5.2 Temperature
The mean annual maximum and minimum temperature of the catchment area,
represented by nearby climatological station namely Bhawanipatna, is 33.4° C and
21.1° C respectively. As such the mean annual temperature of the project area is
27.25° C. The recorded maximum and minimum temperature in the project area is
44.9° C (in May) and 8.3° C (in January) respectively.
1.5.3 Humidity
It is seen that relative humidity is maximum in the month of August and minimum in
the month of March. The relative humidity in the basin varies from 88% to 93%
during July to September.
1.5.4 Cloudiness
During South-West monsoon sky is generally overcast. In other months sky is
generally clear and lightly clouded. The maximum cloud cover is observed in the
month of June and July and minimum cloud cover is in December and January.
1.5.5 Winds
The main wind direction in the basin is between Southwest and Northwest during the
first half of the monsoon seasons. In the second half of the monsoon season, the wind
direction is between West and Northwest. The wind velocity varies from about 0.5 km
/hr to 3.2 km/ hr on normal days
1.6 TOPOGRAPHY AND SOILS
The region lying in the catchment is having a rocky and uneven wavy surface and
having an interesting complex of denuded hills, plateaus, sharp ridges and mature
valleys. Physically, the region may be broadly divided into three distinct units, each
with a different physical character: (i) northern upland; (ii) the erosional plains of
Mahanadi valley, and (iii) southern hilly region of Eastern Ghats.
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 1 - 6Haryana –122015
There is a considerable extent of natural vegetation in this region. Besides the
abundant growth of bamboo along the Eastern Ghat tracts and other low-lying areas,
Sal forest also occurs extensively throughout this region. The forests yield a variety of
products like kendu leaves, tusser cocoons, lac, myrobalans, cane, arrow-roots, mahua
flowers, broom grass, sabai grass, gums, resin, khair and sunari bark which provide
livelihood support to the original inhabitants of this region.
The soil depth in the command area is primarily shallow-deep to moderate-deep as
can be seen in the Figure 1.1. The soil depth suggests the volume of soil which the
plant root can exploit for obtaining their nutrient and water for growth. As indicated
the figure, the data shows that the maximum command area is moderately deep and
the cultivation of Millets, Pigeonpea, Moong, Black Gram and forest crops in selected
areas are suggested for soil having shallow to medium depth during Kharif season,
while rice and wheat can be cultivated under irrigated condition during Ravi season.
As far as soil texture is concerned, it acts as a guide to many soil characteristics
directly or indirectly related to plant growth. The data about the soil structure in the
command area is shown in the Figure 1.2, which indicates that the majority of the soil
covering the command area is loamy and clayey. As soil texture is moderately fine,
therefore, the supply of water to plant is greater in this type of soil than that of coarse
texture. Under similar conditions, the availability of nutrients to plants usually
increases as soil texture becomes finer. As such, the both soil depth and soil texture of
the command area is well suited for irrigated cultivation.
1.7 POPULATION AND SOCIOECONOMIC CONDITION
As per 2001 census, there are 4,733 males and 9673 females who are marginal
workers and 12,598 males and 18154 females who are non-workers residing in 19,043
households in 87 inhabitated villages under Chandahandi Block. The total population
of the Chandahandi Block is 61,076 (30,350 male and 30,726 female), the SC/ST
population is 6,479 and 20,276 respectively. About 77% of villages are electrified.
There are about 59 primary schools, 21 middle schools, 9 secondary schools in the
block. There is one college with 160 students functioning at Chandahandi Block. The
literacy rate is 57.77% for male and 20.72% for female. There are 5 public health
center and one mobile health unit maternity care center existing in the Chandahandi
Block with six doctors and 10 beds.
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 1 - 7Haryana –122015
The inhabitants in the command area are mostly tribals. They mostly depend on
cultivation and forest products. Some speak Oriya in a corrupt form, which is an
admixture of several words and phrases from aboriginal dialects. Regions near
boarder have a heavy dose of Chattishgarhi language. The religion of this area is
composite. There are Hindus, Christians and Muslims. The tribals living here are
namely Bhumias, Dombs. The latter are wide spread through the region. They are
weavers and drummers by profession. The dombs are also engaged in cattle trade.
Most of them earn their livelihood by cultivation and weaving. In the upper rank of
the social scale we come across Sankharies, who deal with lac and who make basket,
chains and dolls out of it. They are good artists, artisans and traders. Malis originally
grow and collect flowers for temple worship. They now switched over to cultivation
of Sugarcane, tobacco etc. on the banks of Indravati river. Sundhis are famous for
distillation and selling of liquor. They are usually rich and wealthy in status.
Kachharparha
Dandamunda
Dharipani
Jharbahal
Pujaharigurha
Shardapur
Malgan
Dumerparha
Dhepgurha
Luhaballi
B
O
R
I
N
Phalshaparha
Matigan
Bhojpur
Sargibahal
Khairbari
Khaparadihi
T
E
L
R
I
V
E
R
T
E
L
R
I
V
E
R
Gamarigurha
Jharigan 4 km
Kotradongri
Malparha
Photamunda
Telumal
Dhupaot
Kharkhari
Kodabhata
Jhulenbar
Koilimunda
T
E
L
R
I
V
E
R
Jorabandh
Kendugurha
Ghantigurha
Onkaberha
Nawaparha
Chandagiri
Ambagurha
Sanamunda
Salebiri
Babariya
T
E
L
R
I
V
E
RG
u
m
a
m
i
h
a
r
i
N
SalebiriT
E
L
R
I
V
E
R
Beheramunda
Jhaliaparha
Babariya
T
E
L
R
I
V
E
R
Kotradongri
D
A
M
A
X
I
S
Kathberha
Khatberha
T
E
L
R
I
V
E
R
N
A
G
A
R
S
H
I
L
J
H
O
R
Mundagurha
Lambidara
Dudana
Dongar
TELNADI R.F
Kadaligaba
Dobadhara
TEL RIVER
Nahardig
Kataldig
Hirabar
Amamunda
Kendugurha
Gabagurha
Balipada
P
E
T
P
H
U
L
A
N
A
D
I
Petphula
B
A
R
L
A
M
J
H
O
R
Kandashor
Khairapet
Petphula
Jogidongar
Keupani
Akarshi
Jogidongar
BEHEDA RESERVED FOREST
Khelapadar
Khelapadar
Nagarshil
B
H
A
T
A
J
H
O
R
Telnadigan
Telnadigan
Karlaparha
P
R
E
S
S
U
R
E
C
O
N
D
U
I
T
Mainapadar
Hatibarhi
Hatibarhi
P
A
D
A
M
J
H
O
R
Kendughat
BEHEDA RESERVED FOREST
F R L 500m
DEEPEST BED LEVEL 417m
T
E
L
R
I
V
E
R
19' 52'30"
INDAGAON PROTECTED FOREST
T
A
I
L
R
A
C
E
C
H
A
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N
E
L
H R
T C
UM
OP
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AN
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B
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A
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Bilijharan
Kadibhandar
Potkhalia
Badalpani
Buddhi Dongar
Bandhkona
Chiligan
Bendradora
J
H
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IP
A
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I N
K
E
B
A
R
I
J
H
A
R
I
N
B
A
N
J
A
R
I N
A
D
I
Gauriharia
JHARIGAN RESERVED FOREST
Rajkot
Kurlapara
Baidparha
Potkhalia
PA
TA
N N
AD
I
Bharjori
Dalbera
Dalbera
Baragurha
KH
AR
IP
AN
I N
Bhatiparha
Bhatiparha
Potkhalia
Khutgurha
Bhatiparha
Mehlimunda
Darliparha
Dulkiparha
K
O
R
A
K
H
A
I
N
A
D
I
Bhaludongri
Haldikhaliaparha
Dhuruwaparha
BELPATIJOR NADI
Langparha
Langparha
Dhorakot
Sinaparha
Semalaparha
Bhattajor
Deobandh
Pipalparha
Kondiora
Kondiora
Jamadarparha
Haldi
Tetaliparha
Junapani
Salebiri
Sanadhurwaparha
Chandahandi
Ladhuaparha
Dhupkot
ChakamalKharkhari
Malbhata
Barigurha
Mohara
Phalsaparha
Baramunda
19' 52'30"
INDEX MAP
TEL INTEGRATED PROJECT
ODISHA
SYMBOL
4-
SCALE
9.
6-
8.
7.
5-
S/N
3-
2-
1-
DESCRIPTION
LEGEND
O D I S H A
C H H A T I S G A R H
O D I S H A
C H H A T I S G A R H
PANNABERA R.F
Nuagan
CCA - 5878 Ha
E
X
I
S
T
I
N
G
L
E
F
T
C
A
N
A
L
FEEDER
CANAL
PHULJHA
RI MIP
CCA - 2000 Ha
CCA - 4025 Ha
SAHAJKHOL P.F.
S
A
H
A
J
K
H
O
L
R
.
F
.
10.
Jamugurha
Gutipadar
Bhalujharan
Gudipadar
P
I
P
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J
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E
DU
MA
JO
RI N
J
I
G
A
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S
H
I
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Phataki
T
H
I
P
A
N
A
D
I
K
O
R
A
K
H
A
I
N
A
D
I
540
500
5
0
0
530
500
350
450
400
481
4
5
0
4
0
0
4
0
0
4
5
0
568
512
4
5
0
4
0
0
360
380
450
450
494
400
350
481
350
500
4
0
0
3
9
0
Boulder
5
0
0
450
400
450
530
520
5
0
0
538
492
B
H
A
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.
H
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A
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P
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/
M
400
360
Boulders
500
Boulders
4
5
0
5
0
0
5
0
0
5
0
0
Stone quarry from Dam site in Village
1. Chikili 24.000km
2. Sandasa 29.750km
3. Near Deobandh on Deo Dongar hill 9.750 km
PH 1
PH 2
WAPCOS LIMITED
Pin -122015
(A GOVERNMENT OF INDIA UNDER TAKING)76 - C, Institutional Area, Sector- 18 Gurgaon (Haryana)
DRG. No.- WAP/WRD/DPR/TIP/INDEX MAP/2017
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CHAPTER-2
Physical Features
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 2 - 1Haryana –122015
CHAPTER – 2PHYSICAL FEATURES
2.1 GENERAL
The project area falls in Nabarangpur district of Odisha having its geographical area
as 5294.5 Sq Km. The district extends in the West up to Bastar district of
Chhattisgarh, in the East up to Kalahandi district, in the North up to Raipur district of
Chhattisgarh and in the South to Koraput district. Nabarangpur district is situated at
19014' Latitude and 82032' Longitude at an Elevation of 1876 m from Sea level. The
district's demographic profile makes it clear that it is a predominantly tribal and
backward district with 55.58% tribal and 73% of the rural families below poverty line
(BPL).
The region is characterized by high temperature in most parts of the year and medium
to high annual rainfall. There is a considerable extent of natural vegetation in this
region. The hydrographical features also reflect these effects. The chapter describes
the general topographical and physical features of the Tel basin and the project
command area.
2.2 GEOGRAPHICAL DISPOSITION
River Tel which rises in the north of Nabarangpur district forms a sort of its
geographical boundary with Kalahandi district and finally unites with a bigger
Mahanadi river in Sonepur town. It is not perennial and dries up during the
summer, as the flow in the river remains virtually nil during the period starting from
mid March to mid June, except for few years when the good monsoon occurs and the
base flow continues even during this period.
Physiographically, the catchment area may be broadly divided into two different
natural divisions, the hilly tracts and the plain areas. The former chiefly comprises of
the ranges of hills which ran from the north-east to the south-west of the district and
the later constitutes the river valleys of Tel and its tributaries.
The asymmetric pattern and the characteristics of the drainage system strongly reflect
the character of relief and the climate differences.
Tel Integrated Multipurpose Project Feasibility Report
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The Tel, which form tributary of Mahanadi may be mentioned among the principal
rivers of Nabarangpur. The scenery along the banks of the course through the hills on
the Tel, is exceedingly fine and varies from wild raging torrents sweeping over bare
rocks, to placid stretches of deep pools with the stream swirling in the eddies between
rich meadow land, verdant with grass and banks overhung with willows.
2.3 TOPOGRAPHY OF TEL BASIN AND COMMAND AREA
2.3.1 Topography
The region lying in the catchment is having a rocky and uneven wavy surface and
having an interesting complex of denuded hills, plateaus, sharp ridges and mature
valleys. Physically, the region may be broadly divided into three distinct units, each
with a different physical character: (i) northern upland; (ii) the erosion plains of
Mahanadi valley, and (iii) southern hilly region of Eastern Ghats.
2.3.2 River System
The River Tel originates from the hilly range near Nabarangpur district in Odisha at
an elevation of 66m. During its course of 296 Km it drains an area of 1496 Sq.Km
before its outfall into river Mahanadi on the right about a kilometer downstream of
Sonepur town in Odisha. The river Tel nearly intercepts 16.3% of the drainage area of
river Mahanadi which is 32.43% of the drainage area of Mahanadi Odisha and it is
encompassed between 820 09’ 48” to 840 17’ 53” of east longitude and 190 15’ 08” to
200 53’ 13” of North latitude. The major tributaries of river Tel are Banjari, Sagada,
Hate, Rel, Udanti, Indra Lanth, Raul, Khagado, and Suktel.
The catchment area of Tel basin is 480 Sq.Km. The Banjari Barrage catches an area
of 230 Sq.Km across Banjari nallah as the area for studies in this project. Similarly
the catchment area for Four Bay Diversion Dam across Pipaljarah Nallah comes out
to be 20 Sq.Km.
2.3.3 Command Area
The water from reservoir will be carried through Power House - 1 & 2 located at
lower altitude on the right side of Tel River near village Phatki in Odisha. The water
finally released from power house will be picked up by proposed Barrage with FRL
325 m and from there a canal of length about 23.395 Km will take off from this
Barrage and will feed water to the existing Banjari Barrage for additional irrigation of
Tel Integrated Multipurpose Project Feasibility Report
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2000 ha through Banjari Barrage and thereafter remaining water will cross Banjari
nallah through an aqueduct to provide irrigation of 4025 ha, further it is also
envisaged to irrigate a command area of 5878 ha by this main canal in its way from
Phatki Barrage to Banjari Barrage. Thus the total water to be carried by the canal is
for a command area 9903 ha.
2.3.4 Geology
The Dam site (height 87m and length 3.8 km) was examined by WAPCOS experts
and studies revealed that the pink to grey granite gneisses are exposed at the proposed
site with secondary veins of pink quartz near proposed spillway location. Geological
study was also carried out at the proposed dam site as well as spillway. After
accomplishing Geo-Technical Investigations, it is revealed that the rock conditions
are considered suitable for water conductor system as well as Dam and power house.
The complete details of Geo-Technical Investigations can be viewed from Chapter-
4.
Apart from the above strata, the catchment area has a treasure of many ores like iron,
chlorite, mica, quartz, hematite, limonite, large deposit of granites and rock beds
covering layered of coarse white quartz.
CHAPTER-3
Interstate Aspects
Tel Integrated Multipurpose Project Feasibility Report
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CHAPTER 3
INTERSTATE ASPECTS
3.1 INTERSTATE ASPECT
The Tel Integrated project proposed on Tel River, a tributary of river Mahanadi is
entirely lying in the state of Odisha and therefore there is no interstate aspect as far as
the project is concerned. Further there is no interstate tribunal award for sharing
Mahanadi basin waters among the party states (Chhattisgarh, Madhya Pradesh,
Maharashtra, Jharkhand and Odisha). However, agreements reached at Chief Minister
level between Odisha and undivided Madhya Pradesh in 1983 at Bhubaneswar with
regard to some projects in the Mahanadi basin to be taken up jointly by Odisha and
the then Madhya Pradesh are reproduced below project wise.
3.1.1 Ib Project (Odisha Project)
Madhya Pradesh agrees to spare 25 percent run-off from the catchment area drained
by Ib River and lying in its territory under the proposed Ib dam project (approximate
latitude 230 12’ N, longitude 840 06’ E). Odisha agrees to fix full reservoir level of Ib
dam at R.L. 272.50 m. The land in Madhya Pradesh would however, be acquired up to
R.L. 273.00 meters to allow for back water impact. In exceptional cases, if areas lying
above R.L. 273.00 meters in the foreshore area of the reservoir in Madhya Pradesh are
damaged due to floods, the damage being solely attributable to the construction of Ib
dam, liable compensation will be paid by Odisha. Madhya Pradesh may generate
hydro-power at the head works of Ib project entirely at its own cost without paying
for the cost of storage, but bearing the full cost of all additional civil and electrical
works required for generation of hydro-power. Madhya Pradesh will make its own
arrangement for operation and transmission of power generated. Project report for
power part will be prepared by Madhya Pradesh for which Odisha will extend
necessary co-operation. However, the regulation of the Ib reservoir shall be done by
Odisha as per operational and irrigation requirements.
3.1.2 Sapanai Project (Madhya Pradesh Project)
Odisha agrees to spare 70 percent of run-off from its catchments area for use in
Madhya Pradesh at Sapanai dam (approximate lat. 210 53’ 45” N. Long. 830 30’
05”E). Madhya Pradesh may formulate Sapanai Project leaving an upstream reserve
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to the extent of 30 percent of run-off from Odisha. Catchment for use in Odisha State,
Submergence due to project is limited to Madhya Pradesh territory only.
3.1.3 Kurunala a Project (Joint Project)
Madhya Pradesh and Odisha agree to implement the Kurunala Project as a joint
irrigation schemes, where the catchment area of Kurunala is about 45 sq. miles
(Approximate Lat. 210 55’ N, Long. 830 33’ E) to irrigate in about 3000 acres in
Madhya Pradesh and about 9000 acres in Odisha. The cost of head works of the
project shall be shared in proportion of the ultimate irrigation benefits derived by each
State.
3.1.4 Upper Jonk Project (Odisha Project)
Odisha agrees to supply water through the left bank canal of Upper Jonk Project at
Odisha - Madhya Pradesh border to support irrigation in an area of 2000 acres in
Madhya Pradesh territory on charges to be determined. The requirement of rest of the
areas in Madhya Pradesh may be met by Madhya Pradesh by utilizing the waters of
the tributaries of Jonk river upstream of lower Jonk Project (Odisha) draining that
area subproject to a maximum utilization of 40 square miles of catchment Odisha
agrees to consider request by Madhya Pradesh for submerging Odisha land for the
above project (s) if any.
3.1.5 Lower Jonk Project (Joint Project)
Odisha and Madhya Pradesh agree that a dam across Jonk river near Girnia
(Approximate Lat. 210 10’ N and Long. 820 37’ 30” E) should be constructed as a joint
project and share the cost of dam, reservoir and available run off in the ratio of 30
percent (Odisha) and 70 percent (Madhya Pradesh). The cost of head regulators and
canal system will be borne by the respective beneficiary States). The surveys and
investigation of Girnia Dam will be carried out by Madhya Pradesh.
3.1.6 Ong Project (Odisha Project)
Madhya Pradesh agrees to spare 20 percent of run-off from its catchment area lying in
Ong sub-basin for use by Odisha at the proposed dam site across Ong river near its
confluence with Surangi River (approximate lat. 210 65’ 29” Long. 830 03’ 06”).
Odisha agrees to fix the full reservoir level of Ong reservoir at R.L. 219.0 meters.
Odisha may however fix the full reservoir level at R.L. 220 meters provided the
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reservoir does not submerge existing irrigated areas in Madhya Pradesh for which
necessary field verification will be carried out jointly.
3.1.7 Jira Project (Odisha Project)
Madhya Pradesh agrees to spare run-off from 14.25 sq. km les of is catchment lying in
Jira sub-basin for use by Odisha proposed Jira dam project (approximate Lat. 210 23’
N. Long. 830 26’ E) with full reservoir level fixed at R.L. 697.5 ft.
3.1.8 Sahajhahal Project (Joint Project)
Odisha and Madhya Pradesh agree to implement Sahajhahal Project as a joint
irrigation scheme where the catchment area of the river is about 22 sq. miles
(approximate Lat. 210 21’ 15” N, Long 830 21’ 15” E) in Madhya Pradesh. The cost
of joint works and irrigation benefit shall be shared in the ratio of 70 percent (Madhya
Pradesh) and 30 percent (Odisha). Surveys and investigations of this joint project will
be carried by Madhya Pradesh.
3.1.9 Lower Kolab Project (Joint Project)
Odisha and Madhya Pradesh agree to re-investigate the lower Kolab Project with
alternative possibilities of irrigation and hydro-power generation. It found feasible,
the project shall be taken up as a joint project. Survey and investigation will be carried
out by Odisha in consultation with Madhya Pradesh and the first preliminary report
will be finalized by June, 1984.
3.1.10 Back Water Studies for Hirakud Dam
Both the States agree to carry out fresh back water studies for the Hirakud reservoir
with a view to ascertaining the extent of submergence caused in Raigarh district of
Madhya Pradesh during high floods. The Central Water & Power Research Station,
Pune may, if necessary, be associated with these studies.
3.1.11 Establishment of Joint Control Board
Madhya Pradesh and Odisha agree to establish a Joint control Board to review the
progress, from time to time of survey, investigation, planning execution and operation
of joint Inter-State Irrigation and/or Power Project(s) and to discuss and resolve any
issues.
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3.1.12 Supply of Power
It is agreed that supply of 5 MW Power which was committed by the Government of
Odisha previously will be resumed.
As the M.P. State Electricity Board is keen to have power from Hirakud, this will be
supplied at Hirakud Bus Bars. The cost of power will be the cost of generation at
Hirakud Power House. The cost would be reviewed annually by the representatives of
the two Boards.
The question of payment of Electricity Duty by M.P. Electricity Board for future
supply by Odisha State Electricity Board of 5 MW. Power would be referred to the
Department of Power, Government of India for their guidelines.
Meeting held on 27.04.1983 at Bhubaneswar
List of officers present
Madhya Pradesh Odisha
1 Shri N.R. Krishna, I.A.S. Secretary,
Energy & Secretary to Chief Minister
1 Shri Gian Chand, I.A.S. Chief
Secretary
2 Shri V.M. Chitale,
Secretary, Irrigation
2 Shri P.C. Hota, I.A.S Commissioner-
cum-Secretary, Irrigation & Power
Deptt.
3 Shri Matin Ahmad, Chief Engineer &
Special Secretary to Chief Minister
3 Shri S.B. Mishra, I.A.S. Secretary to
Chief Minister
4 Shri S. Dhagat, Chief Engineer
Irrigation, Mahanadi Basin
4 Shri S.C. Tripathy, Consultant.
5 Shri N.C. Sohani, Superintending
Engineer
5 Shri K.T. Subudhi, Engineer-in-
Chief, Irrigation
6 Shri U.B. Singh, Superintending
Engineer.
6 Shri A. Panda, Chairman, Odisha
State Electricity Board
7 Shri. K.C. Mohapatra, Deputy
Secretary, Irrigation & power
8 Shri. R.K. Mishra, Deputy
Secretary, Irrigation & power
9 Shri. M.L. Lath, Superintending
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Madhya Pradesh Odisha
Engineer, Technical Unit.
10 Shri. J.C. Pati, Executive Engineer,
Planning.
11 Shri. S.N.Mishra, Executive
Engineer, Sundergarh Irr. Division.
12 Shri. C.R. Mohapatra, Executive
division
13 Shri. S.N.Mohanty, Executive
Engineer, Kalahandi Irrigation
Division
14 Shri. A.R.Satpathy, Asstt. to
Engineer in chief, irrigation , Odisha
CHAPTER-4
Survey & Investigations
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CHAPTER 4
SURVEY AND INVESTIGATIONS
4.1 GENERAL
The survey and other field investigation as required for preparation of feasibility for
the Tel Integrated Multipurpose Project have been executed as per CWC guidelines
2000. The field survey requirements were identified based on toposheet study and
reconnaissance surveys and the same were carried out as per the conceptual planning
of the various components of the scheme.
The project was initially conceptualized and was taken up by the water resources
department, Government of Odisha for preparation of feasibility report. After
reconnaissance survey of various sites in Lower Mahanadi river basin, followed by
detailed study and investigations involving geology, topography and hydrology, soil
survey etc the site has been selected for the proposed Tel Integrated Multipurpose
Project. The following field surveys and investigations were taken up for forming up
selection of the project site.
4.2 RECONNAISSANCE SURVEY
Based on Toposheet identification, some tentative sites in upper reaches of the Lower
Mahanadi river basin were visited. Areas upstream and downstream of the sites were
traversed and physiographical and other relevant features noted for further
examination.
4.3 TOPOGRAPHICAL SURVEYS
Experts of Water Resource Dept, Govt. of Odisha and WAPCOS visited the tentative
proposed dam, barrage and power house sites in the basin area. After geological
reconnaissance and detailed appraisal of the geological features of the project area, the
proposed site has been found to be geologically safe and suitable for construction of
headwork structures and it was found that there are no mineral deposits in the reservoir
area carried out by the Geologist of Directorate of Geology and the same is appended
as Annexure-4.1 at the end of this chapter. Following Topographical Survey work
have been carried out as per requirement of Terms of Reference and as per
specifications of CWC guideline August 2000.
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a) Topographical Survey at Dam axis
The survey has been carried out at the dam axis on the River Tel. Cross section has
been developed by taking readings at every 50 m interval along the length. Drawing
pertaining to Strip Survey has been represented in a local Northing and Easting co-
ordinate system. Topographical contour plan for strip survey of the dam axis have
been developed with contour interval of 5 m appended in drawing no.
WAP/WRD/TIP/FIG No. 1.
b) Submergence Survey
Topographical survey of the submergence area upstream of the proposed dam axis
was carried out with the consideration of Full reservoir level (FRL) fixed at 500.0 m,
so as to determine submergence area, dead storage and live storage capacities of the
reservoir. The submergence area map is appended as drawing no.
WAP/WRD/TIP/FIG No. 2.
c) Dam Base Survey
Cross sections of Tel River at 200 m interval were taken in a length along the river
flow upto 3200 m upstream and 1800 m downstream of the proposed dam axis. The
corresponding cross sections at dam axis, upstream sections and downstream sections
are shown in drawing nos. WAP/WRD/TIP/FIG No. 3, 4 and 5 respectively. These
sections are prepared at 1:100V and 1:1000H scale.
d) Longitudinal Section
To know the topography and river bed levels of the Tel and Banjari rivers of the Tel
integrated project, topographical survey was carried out along the Tel River and
Banjari River and corresponding longitudinal sections have been prepared along the
reaches. Longitudinal section along Tel River has been appended as drawing no.
WAP/WRD/TIP/FIG No. 6 and along River Banjari is appended as drawing no.
WAP/WRD/TIP/FIG No. 7.
e) Water Conductor System
Hydrographic surveys / River surveys was carried out for establishing design flood /
tail water levels at site of proposed structure. Thus, Grid contour topographical survey
was carried out at the entire area of water conductor system i.e. from Dam on Tel
River to Phatki Barrage through various civil structures i.e. Intake Tunnel, Head Race
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Tunnel, Penstocks, Open Channel and Tail Race Tunnel. Beyond Phatki barrage,
storage water will be off takes through Right Main Canal for the multipurpose uses.
Based on this topographical survey, L-sections have been prepared along the Right
Main Canal and is appended as drawing no. WAP/WRD/TIP/FIG No. 8.
f) Command Area Survey
Command area survey has been carried out following the standard survey practices.
The command area of the proposed project lies on single sides of the River Tel. The
survey of the command area has been carried out following the standard methods of
surveying and a contour map of the area with 1 m contour interval has been prepared,
and enclosed in drawing no. WAP/WRD/TIP/FIG No. 9.
For micro canalization of the command area, a detailed topographic survey of a pilot
area equal to 10 % of the total area with contour at 1 m interval on village maps are
being carried out. For this purpose the survey party has collected the village maps;
khasra map of land, details of each land like area, details of land owners etc and
develop digitized version of the maps incorporating all the collected details.
Topographical plan of each cultivation land are being prepared developing contour at
1 m intervals taking levels at suitable intervals and at each corner of the plot as well as
at centre point of each plot. A Pilot area equal to 10% of the total area is being
surveyed. Detailed village wise command area survey plan is appended as drawing no.
WAP/WRD/TIP/FIG No. 10.
g) Power House Area Survey
Grid topographical survey of the power house area was carried out. From the surveyed
data contours has been developed at a contour interval of 1 m. The contour map of the
power house area – I & II are prepared on 1:1000 scale and appended as drawing no.
WAP/WRD/TIP/FIG No. 11 & 12 respectively.
h) Phatki Barrage Area Survey
Topographic survey of the Patki submergence area upstream of the existing Phatki
Barrage was carried out, so as to determine submergence area, dead storage and live
storage capacities in the storage.
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i) Establishing Bench Marks
Bench Marks has been established with existing GTS. The new BMs have been
connected to the nearest GTS or permanent Bench Mark of SOI by double leveling.
The words ‘B.M.’ and the RL values have been painted clearly on every location. A
list of established Bench Marks is given as under:
B.M / GTS R.L. VALUE (m) LOCATION
SOI PBM 622.500 RHS of Bitumen Road from Umer Kote toRaigarh near village Chikalpadar on a stonerock
W-4 609.188 Hanuman Temple at Umerkote9/335 608.800 Culvert Road Umerkote to Jhorigaon. 9.335
km from UmerkoteW-10 618.498 On culvert – village TaramariW-13 617.942 Police Station Jhorigam Main Gate PillarW-14 622.795 Junction of road Jhorigam to BorigudaW-18 566.609 On rock opposite hut at Hathi Badi bus
stop. 50 m RHS road JHG-CNDW-19 562.863 On rock opposite Karlapada bus stopW-22 399.287 Jhorigam Chandahandi block boundary
pillar near GhatiW-24 378.028 Small stone at junction
Katcha rasta to Bitumen RoadW-28 403.144 On right bank of Tel river Kutcha road
joining the river
j) Fixing of Center Line Stones
The alignment of the water conductor system has been fixed accurately. For centerline
marking R.C.C. blocks has been fixed and at point of intersections and also along
tangent and apex point of curves along the alignment of the system.
k) Preparation of Land Acquisition Plan
i) Width of land required for canal acquisition has been worked out basedon the cross sections of the canal.
ii) Width of land required for irrigation sources (new/old)/canal/pipelineacquisition has been worked out based on the cross sections of the canal@ 50 m intervals all along the length and area arrived at for canal.
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iii) Demarcation stones along the boundaries of land acquisition have beenfixed on both the sides.
iv) The alignment along with land widths as worked out above has beenmarked on the village plan to assess survey number wise area of land tobe acquired for execution.
v) Thus, land plan schedules in the prescribed proforma covering surveynumbers, particulars of land and land holders, survey number wise areahas been acquired along with classification of land etc. has been prepared.
vi) Statements of structures, trees, wells or any other private, public or Govt.property to be acquired also has been furnished while preparing LandAcquisition Plan.
l) Accuracies
All the survey instruments have been maintained in good condition to achieve higher
accuracies but in no case there shall exceed those given below:
Theodolite/Total Station, EDM Traversing
Allowable error of closure - 1/3000Allowable error of distance - 1/5000Allowable error of closure - 4√k mm(Where k is the total distance in km)
4.4 GEOTECHNICAL INVESTIGATIONS
The complete Geotechnical investigations carried out in the project area is appended as
Annexure 4.2 at the end of the chapter.
CHAPTER-5
Project Hydrology
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CHAPTER – 5PROJECT HYDROLOGY
5.1 INTRODUCTION
The Tel integrated Project is likely to have following components.
1. A Storage Dam on Tel, about 3 Km upstream of the place where river passes
from Odisha and starts forming the boundary between Odisha and Chhattisgarh
and there is likely to be a comparatively large reservoir, possibly with a carry
over storage. The Dam would have a catchment area of about 480 km².
2. A 1.35 Km long pipeline leading to a powerhouse near Phatki village. While the
FRL and MDDL of the reservoir is 500m and 480m, the tail water level after the
Power House 1st and 2nd would be 418 m and 328 m respectively.
3. A barrage to be constructed on Phatki nallah - a tributary of Tel, slightly up
stream of its confluence with Tel. The purpose of this barrage is to act as a
diversion structure for diverting flow of both Phatki nallah as well as water
coming from Tel dam through power houses for irrigation command area lying
between Phatki nallah and Banjari River.
4. A 23.40 Km long canal from Phatki barrage which crosses Banjari Nallah
through an aqueduct. The river Banjari is also a tributary of Tel. The catchment
area of the Barrage would be about 230 km².
5. An Irrigation distribution system from this canal between Phatki barrage and
Banjari Nallah having a G.C.A. of 9184.6 ha and another irrigation distribution
system beyond Banjari nallah having a G.C.A. of 6289.6 ha.
6. A 7.0 Km long left canal (Exixting) from Banjari Barrage, with an irrigation
distribution system, which is proposed to serve a G.C.A. of 2500 ha.
5.2 HYDROLOGIC INPUTS REQUIREMENTS FOR PLANNING THE
PROJECT
The Tel Integrated Multipurpose Project system involves a large storage (dam), a
diversion structure, two new irrigation command areas and a command area for
stabilization. The simulation of the system has been carried out on monthly basis, for
the period 1971-72 to 2007-08. Following data were used in the simulation study.
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i. Data requirement for the simulation studies
a. Monthly in flow series for each of the dam sites and Barrage sites
b. Monthly rainfall and effective rainfall information for the command areas
c. Elevation-Area-Capacity curve for the reservoir
d. Evaporation data from water surface
ii. Data required for flood related safety of the structures
a. The probable maximum flood for the main storage dam
b. The standard project flood and frequency (100 year flood), as the case may be,
for the pondages, Barrages or Weirs.
5.3 AVAILABILITY OF HYDROLOGICAL DATA
a) Rainfall data
Rainfall data in the vicinity is available for five stations. The daily data has been
collected and has been compiled as 10-daily and monthly data. The availability is as
indicated below. As the rainfall data is not available on a continuos basis for a longer
period for the stations mentioned below, it has been decided to utilize the flow data
available (for more than 30 years) in the Tel River basin at kantamal, Kesinga &
Sukma G&D Sites for assessing the water availability for Tel Integrated Project. The
data processing and development of flow series are discussed subsequently.
Station Name Latitude LongitudeData Availability Appendix No.
Showing the10 daily dataFrom To
Belpara 20° 35’ 82° 59’ Jan-1970 Dec-1992 Appendix-I(Hyd)
Jashpurnagar 22° 53’ 84° 08’ Jan-1966 May-1999 Appendix-II(Hyd)
Jharsuguda 21° 51’ 84° 02’ Jan-1943 Dec-1992 Appendix-III(Hyd)
Khaparakhol 20° 40’ 82° 50’ Jan-1952 Dec-1992 Appendix-IV(Hyd)
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Station Name Latitude LongitudeData Availability Appendix No.
Showing the10 daily dataFrom To
Nawapara 20° 50’ 82° 33’ Jan-1947 Dec-1996 Appendix-V(Hyd)
Sundargarh 22° 07’ 84° 02’ Jan-1979 Nov-2005 Appendix-VI(Hyd)
b) River flow data
In the vicinity of the project, river flow data is available for three sites maintained by
Central Water Commission. The daily discharges have been collected from the
Central Water Commission. The ten daily compilations of daily data have also been
made. The details in regard to the availability of this data is shown below and also the
annual flow data for Kantamal, Kesinga and Sukma for the same years can be viewed
in Annexure No. 5.1, 5.2 & 5.3.
Flow data availability
Site
NameRiver Basin
Catchment
area(Sq.
km)
Data availabilityAppendix No.
showing 10 daily dataFrom To
Kantamal Tel Mahanadi 196001971-
72
2007-
08Appendix VII (Hyd)
Sukma Suktel Mahanadi 13651989-
90
2001-
02Appendix VIII (Hyd)
Kesinga Tel Mahanadi 119601978-
79
2007-
08Appendix IX (Hyd)
5.4 PAN EVAPORATION DATA
The observed pan evaporation data is important both for estimating the likely
reservoir evaporation and for estimating the likely evapo-transpiration from irrigated
areas. From reservoir, water is lost due to evaporation and loss of water due to
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evaporation should be considered while carrying out simulation studies. Evaporation
rates are important for preparation of reservoir operation tables. It has a very
significant role to play during a delayed monsoon season when the reservoir storage is
under maximum stress and demand for irrigation, water supply and hydropower
increases manifold. Evaporation rates are generally highest in the summer months
before the advent of monsoon; these may further increase during the delayed monsoon
period owing to rising temperature resulting in severe depletion of the reservoir.
Observed evaporation data is not available for any station in the region. The
evaporation value have, therefore been interpolated from Evaporation Tables
published by IMD. Evaporation depths are measured by using American Class-A Pan
Evaporimeter. Factors prescribed by IMD to convert the observed meshed covered
pan data to open pan and then into the lake or reservoir evaporation depths are
discussed in this chapter under the section on reservoir evaporation.
5.4.1 Climatological Data
In order to decide the crop water requirements and irrigation water requirements.The
data Bhawanipatnam station has been used the position with regard to this data is
given under.
StationName
Latitude Longitude
Data Availability AppendixNo.
Showingthe 10 daily
data
From To
BhawaniPatna
19° 55' N 83° 11' E 1971 1990Appendix X
(Hyd)
5.5 PROCESSING OF FLOW DATA AS REQUIRED FOR SIMULATION
As already stated, the simulation would be on 10-daily basis since the system has both
reservoir and diversion structures. Thus, the processing 10 daily data is important.
The processing of the flow data normally consists of:
i) Internal consistency checks such as between river stage and river discharge.
ii) External consistency checks such as:
Between simultaneous flow of one station and another
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Comparison of the shape of the cumulative probability functions (flow
duration curves) of the various stations
Comparison of general statistical properties of the various flow series
Consistency between flow and rainfall
We have not been able to conduct the internal consistency as the water storage data
was not readily available from the Central Water Commission. Hopefully, they would
have already carried out such checks.
The flows of any site would be affected by various factors, but the size of the
catchment and rainfall regime would be the prime factors. To remove the effect of the
catchment size, we have converted all 10 daily volumes, in million cubic meters, into
specific flows in lit./s/sq. Km. We have used these specific flows in all data
processing.
The average flow regime of the three sites as 10 daily specific flows is shown below
with the relevant tables and graphs:
10-Daily Average Specific Flows in Lit/s/Sq.Km
Month Sukma Site Kantamal Site Kesinga Site
jun-I 0.36 1.97 3.49
jun-II 43.34 11.73 21.72
jun-III 5.16 14.48 25.14
jul-I 36.93 33.55 44.81
jul-II 41.8 43.02 48.4
jul-III 63.87 48.67 60.77
Aug-I 49.82 62.72 82.57
Aug-II 83.44 68.72 79.15
Aug-III 65.18 75.14 78.83
Sep-I 52.66 54.66 62.25
Sep-II 55.38 60.96 57.89
Sep-III 29.46 31.72 29.25
Oct-I 22.18 24.55 35.54
Oct-II 13.08 13.38 13.92
Oct-III 4.96 10.03 7.96
Nov-I 10.6 8.33 8.79
Nov-II 6.98 7.11 7.92
Nov-III 3.6 6.01 7.05
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Dec-I 1.45 4.40 5.72
Dec-II 1.73 3.34 4.52
Dec-III 1.02 2.66 3.21
Jan-I 1.19 2.26 2.69
Jan-II 1.18 1.99 2.07
Jan-III 2.2 1.71 2.15
Feb-I 1.73 1.57 2.35
Feb-II 0.85 1.45 2.1
Feb-III 0.54 1.45 2.69
Mar-I 0.13 1.22 1.88
Mar-II 0.19 1.16 2.01
Mar-III 0 1.08 1.71
Apr-I 0 1.13 1.88
Apr-II 0 1.09 1.96
Apr-III 0 1.16 2.37
May-I 0 1.20 2.6
May-II 0 2.17 3.95
May-III 4.01 1.67 2.91
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A comparison of these would show that the general flow regime of the three sites is
very similar. The flows are very low in the spring-summer session of January to May,
and at the Sukma site where the catchment area is comparatively small (1365 sq.
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kms.) the river seems to be ephemeral with no flow. Perhaps the catchment geology
also may be responsible for this. At the larger site on Tel, a small specific flow of
around 1 lit/s/sq. km is available during this season. The flow increases suddenly in
the first or second 10 day period of June and is maximum in the month of August,
during the autumn – winter season of Oct. to May, the flow decreases, but the flows in
Sukma seem to be lower than those at the other two sites.
The Sukma Site has no flow in the the first 10 days of June. The average for the
second 10 day period is much larger than that for the third 10 day period of June.
The variability of the 10 daily specific flows form year to year is depicted by the
standard deviation of the 10 daily array are by the coefficient of variation. The regime
of the coefficient of variation at the three sites is shown below.
Kantamal Sukma Kesinga Kantamal Sukma Kesinga
Jun-I 1.618 2.224 1.5 Dec-I 0.598 0.694 0.883Jun-II 2.613 0.659 2.271 Dec-II 0.806 1.171 1.264Jun-III 1.44 1.973 1.198 Dec-III 1.002 1.004 1.255Jul-I 1.715 1.307 2.066 Jan-I 1.124 0.889 1.346Jul-II 1.008 1.331 0.89 Jan-II 1.033 1.773 1.209Jul-III 0.939 1.027 0.917 Jan-III 1.142 NA 1.528Aug-I 0.727 1.182 0.74 Feb-I 1.33 NA 1.547Aug-II 0.907 0.939 0.731 Feb-II 1.294 NA 1.491Aug-III 0.921 1.082 0.934 Feb-III 1.35 NA 1.52Sep-I 0.774 1.246 0.825 Mar-I 1.496 NA 1.657Sep-II 1.056 1.409 1.183 Mar-II 1.65 NA 1.966Sep-III 0.908 2.178 0.791 Mar-III 1.651 NA 1.76Oct-I 1.552 1.98 2.072 Apr-I 1.71 NA 1.67Oct-II 1.158 0.766 1.175 Apr-II 1.45 NA 1.455Oct-III 1.214 1.497 0.998 Apr-III 1.704 NA 1.63Nov-I 1.331 0.873 1.158 May-I 1.538 NA 1.45Nov-II 0.891 0.615 0.791 May-II 1.842 NA 1.317Nov-III 0.593 0.685 0.759 May-III 1.412 NA 1.404
MonthsCo-efficient of Variation
MonthsCo-efficient of Variation
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A Comparison of these three figures also shows some similarity. The coefficient of
variation is very high in June and October in view of the uncertainty about the start
and withdrawal of the Indian summer monsoon. The variability is less during the rest
of the monsoon. The variability is very considerable during the Dec to May period,
and this is somewhat unexpected. Obviously, some effect of the North East monsoon,
and some pre-monsoon showers are causing such sudden variations in flow .This is
illustrated below for a few years for the Kantamal site.
A few Years showing some what unusual flow variation at Kantamal on Tel.
All Figures in Million Cubic Meters
Year---> 1985 1987 1994 1999Nov-I 1569.456 234.567 523.39 1106.307Nov-II 1946.34 222.40 2472.35 438.40Nov-III 900.20 536.77 1382.68 248.15Dec-I 1698.62 460.55 1019.32 371.81Dec-II 1224.21 192.70 593.30 708.54Dec-III 222.89 307.46 1654.01 737.16Jan-I 418.02 363.57 323.83 366.68Jan-II 157.82 608.28 476.93 355.09Jan-III 338.79 335.80 338.32 177.21Feb-I 177.25 96.39 223.06 148.63Feb-II 66.16 50.13 371.80 269.40Feb-III 73.55 36.40 229.12 142.93Mar-I 74.12 37.79 513.06 156.12Mar-II 61.27 41.82 159.98 145.74Mar-III 42.22 36.59 109.80 128.69Apr-I 28.27 16.13 71.88 104.60
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Apr-II 25.22 60.09 94.88Apr-III 14.06 4.85 42.56 82.10May-I 28.38 2.95 42.93 77.41May-II 11.92 2.29 31.05 82.27May-III 7.10 1.12 21.47 76.14
The 10 daily river flows have a large auto correlation, due to the valley storage of
surface water, bank storage of ground water etc. This is an important property which
should be maintained in the series to be prepared for simulations. This auto
correlation between one ten day period and the next was investigated for all the three
sites. The results are shown below.
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A comparision of this information about auto correlation shows that the auto
correlation is generaly low during the monsoon but is very high during the non
monsoon period, making the low flows in the Feb to Apr period almost deterministic,
dependent on the earlier flows .For the Sukma site, there are hardly any flows beyond
January, and also the data period is short. Perhaps due to these reasons, the auto
correlation for Sukma are some what erratic and do not fit with the other sites.
5.6 THE FLOW DURATION ANALYSIS AND INTER COMPARISION OF
FLOW AT THE THREE SITES
In general there are two ways in which the flow duration analysis can be done.
a) The flows or the specific flows for a period like a month, a season, or a year can
be added or clubed together and the flow duration analysis can be made for these
clubed values. For example, if the monsoon consists of 12 ten daily periods, and
20 years data is available, in this method the flow duration would be based on the
twenty clubed values.
b) In the second approach, each of the 10 daily figures would be used in constructing
the flow duration curve. Continue with example given in a) above, in this method,
the flow duration curve would use all the 240 values.
c) Apart from this difference in approach, another decision is about the period to be
used in preparing the flow duration. One has to decide if a separate curve is to be
prepared for each 10 day period, each month, each season or for the whole year.
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In general, the approach at a) would be more relevant for storage project where the
storage is an element which clubs to gather the water receive.
The approach at b) would be more relevant for the diversion structure. We have used
both the approaches. Also, we have used the flow duration curves for comparing the
behavior of the three sites.
The flow data availability is already tabulated above. The data for all the three sites
are available for the period 1989-2002.
A plot showing the comparison of the specific flow for this period is shown below:
This Graph Seems to indicate that in the monsoon period ,the flows of the three sites
are some what similar. However, the flows in nonmonsoon are so low that graphical
comparision is becoming difficult.To over come this we have ploted same graph in
semilog format .For allowing the semilog plot, the Sukma values, where these are
zeros, have been replaced by 0.01 lit/s/sq.km. This is shown below.
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Following the approach a) more relevant to storages, the seasonal comparison of
specific flows of the three sites are shown below:
percentilein specificflow(lit/s/s
q.km)
June to Sep Oct to Jan Feb to May
Kantamal Sukma Kesinga Kantamal Sukma Kesinga Kantamal Sukma Kesinga
0.1 77.94 87.47 84.87 15.68 4.19 19.49 4.03 0 7.360.2 70.14 58.21 76.89 11.34 3.87 10.24 3.3 0 5.640.3 58.97 50.08 64.11 8.71 3.26 7.9 1.2 0 2.540.4 51.55 43.21 51.63 6.99 2.93 6.76 0.46 0 0.480.5 42.81 35.05 43.36 5.55 2.4 5.12 0.3 0 0.350.6 34.51 31.79 36.6 4.56 2.29 3.77 0.3 0 0.240.7 27.92 23.48 30.49 3.77 1.66 3.41 0.21 0 0.190.8 25.25 18.75 25.86 3.41 0.63 2.68 0.19 0 0.10.9 17.61 8.91 16.89 2.03 0.13 1.66 0.13 0 0.07
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 5 - 15Haryana –122015
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 5 - 16Haryana –122015
percentile in specificflow(lit/s/sq.km)
Annual Flow(June to May)
Kantamal Sukma Kesinga
0.1 34.795 30.485 38.112
0.2 27.251 24.477 28.317
0.3 23.188 19.769 23.394
0.4 19.401 15.490 18.877
0.5 17.117 12.716 15.840
0.6 13.438 11.895 14.380
0.7 11.696 8.746 12.866
0.8 10.650 7.063 9.254
0.9 6.892 3.162 7.064
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 5 - 17Haryana –122015
These figures clearly shows that the monsoon and annual specific flows of three sites
have very similar probabilities of exceedance, with the Sukma site showing slighty
lowers flows. The Sukma sites has a smaller catchment area, more comparbale with
the proposed dam catchment as compared to the other two sites.However, the Sukma
site is on another river Suktel, while Kantamal and Kesinga are on the same river on
which dam is proposed. On the overall, the use of Kantamal specific flows for
building up of the monsoon in flows at the dam site appeares to be a better
methodology.
The comparision of the exceedance probabilities for the Autumn winter season of Oct
to Jan tells a different story. While the specific flows of Kantamal and Kesinga are
comparable, the specific flows for Sukma are very much lower. These values, in
general, are ½ to 1/3 of the values for Kantamal and Kesinga.If this is due to the
Geology of the Sukma catchment, these properties may not be very relavant for the
proposed dam on Tel river. However if these reduction are due to smallness of the
catchment and the consequent absensce of the “in bank” storage in the alluviam,
these would be relavant to Tel dam. To get a better inside into these, we make
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 5 - 18Haryana –122015
monthly comparision of the exceedance probabilities at these three sites, using the
methdology at “b)” described earlier. These are shown below.
10 Daily flow duration curve for Oct - Comparison between the three sites
Probability of Excedence Kantamal Sukma Kesinga
0.05 67.501 43.671 67.901
0.1 31.597 20.190 27.420
0.15 24.233 12.605 25.560
0.2 20.751 10.683 19.637
0.25 19.902 8.291 17.341
0.3 17.301 7.767 15.934
0.35 15.336 7.655 13.022
0.4 13.732 7.604 11.169
0.45 12.637 7.200 9.434
0.5 11.497 6.492 8.735
0.55 9.817 5.583 7.723
0.6 8.777 5.030 6.572
0.65 8.018 4.609 5.070
0.7 6.245 2.988 4.601
0.75 5.426 2.278 4.072
0.8 4.348 1.861 3.524
0.85 3.684 1.680 2.849
0.9 2.933 1.135 2.217
0.95 2.561 0.832 1.910
Tel Integrated Multipurpose Project Feasibility Report
WAPCOS Limited76-C, Sector-18, Gurgaon 5 - 19Haryana –122015
10Daily flow duration curve for Nov - Comparison between the three sites
Probability ofExcedence
Kantamal Sukma Kesinga
0.05 20.110 17.753 20.1720.1 14.573 12.242 17.2100.15 13.520 7.876 14.6870.2 12.121 7.650 12.6050.25 10.237 7.505 11.4740.3 9.447 6.608 10.1760.35 8.563 6.049 8.1760.4 7.721 4.417 6.2740.45 7.02