(Chandrapur Irrigation Project Circle, Chandrapur)environmentclearance.nic.in/writereaddata/FormB/TOR/PFR/27_Jul... · 7 Cross Section of Barrage 15 8 L Section of Barrage 16 LIST

PRE-FEASIBILITY REPORT

KOTGAL BARRAGE PROJECT FOR

IRRIGATION PURPOSE ACROSS WAINGANGA

RIVER CAPACITY: TOTAL 7780 CCA

at Village Kotgal, Taluka & District Gadchiroli,

Maharashtra

M/s. Vidharbha

Irrigation Development

Corporation (VIDC),

Nagpur

(Chandrapur Irrigation Project Circle,

Chandrapur)

Environmental Consultant

SMS Envocare Ltd. 301, Pentagon P3, Magarpatta City,

Hadapsar , Pune

Maharashtra

PRE-FEASIBILITY

REPORT

Kotgal Barrage Project across Wainganga River In Tehsil & Dist. Gadchiroli,

Maharashtra by Executive Engineer, Minor Irrigation Division, Chandrapur.

INDEX

Sr. No. Particular Page No.

1 Executive Summary 1

2 Introduction of The Project / Background Information 4

2.1 Identification of project 3

2.2 Br ief history of the project 4

2.3 Need for the project and its impor tance to the country and

region

5

2.4 Benefit of Project 7

3 Project Descr iption 7

3.1 Type of project including inter linked and interdependent projects,

if any

7

3.2 Regulatory Frame Work 7

3.3 Location with coordinates 8

3.4 Details of alternate sites considered 17

3.5 Size or magnitude of project 17

3.6 Project descr iption with process details 17

3.7 Water availability 17

3.8 Cropping Pattern and Crop Water Requirement 18

3.9 Simulation 19

3.10 Command 19

3.11 Water utilization 20

3.12 Alignment 20

3.13 Catchment Area 21

3.14 Flood study 21

3.15 Sill Level of Barrage 21

3.16 FRL 21

3.17 HFL 21

3.18 AHFL 21

3.19 Top of Pier 21

3.20 Top Level of Br idge 22

3.21 Approaches 22

3.22 General Layout 22

3.23 Sub-Sur face Geology 22

3.24 Foundation level 22

3.25 Gate and Openings 23

3.26 Sluice Gates 23

3.27 Piers 23

3.28 Energy Dissipation Arrangement 23

3.29 Protect ion work 23

3.30 Grade of Concrete 23

3.31 Water availability Studies for Kotgal Barrage Project 24

4 Drainage 24

4.1 Godavar i River Basin 24

4.2 Warda Sub-River Basin 26

4.3 Kanhan River-Hydrology 26

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Maharashtra by Executive Engineer, Minor Irrigation Division, Chandrapur.

Sr. No. Particular Page No.

4.4 Nag River-Hydrology 27

5 Geomorphology 27

5.1 Information on Distr ibution of Geological formation 25

5.2 Structural Or igin: Structural Hill/ Ridges 28

5.3 Denudational Or igin: Denudational Hills, Pediments / Pedi plains 28

5.4 Fluvial Or igin: Older and Younger Alluvial Plains 28

6 Climate Condition 29

7 Requirement of Project 29

7.1 Crop Water Requirement 29

7.2 Power Requirement 30

7.3 Manpower Power Requirement 30

8 Construction programme & planning 30

9 Resettlement & Rehabilitation 30

10 Project cost Estimate 30

11 B.C. Ratio 30

12 Analysis of Proposal (Final Recommendations) 31

LIST OF TABLE

Table No. Particular Page No.

1 Ir r igated areas in India 5

2 Project Capacity 17

3 Comparative sheet of cropping pattern of Kotgal LIS, Other LIS

and Gogaon LIS

18

4 Command details 19

5 Water utilization details 20

6 Impor tant Tr ibutar ies of Godavar i 25

7 Climate condition of Gadchiroli Distr ict 29

LIST OF FIGURE

Figure No. Particular Page No.

1 Project Locat ion Map 9

2 10 Km Radius Toposheet map 10

3 Command map 11

4 View of Barrage Axis 12

5 View of Index map of Kotgal Lift Ir r igation Scheme 13

6 View of command map 14

7 Cross Section of Barrage 15

8 L Section of Barrage 16

LIST OF ANNEXURE

MWRRA approval : Annexure-1

Water Availabili ty Cer tificate : Annexure-2

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REPORT


Maharashtra by Executive Engineer, Minor Irrigation Division, Chandrapur

SMS Envocare Limited, Pune 1

1. EXECUTIVE SUMMARY

Sr. No. PARTICULARS DETAILS

A PREAMBLE

1. Project Name Kotgal Barrage Project For Ir r igation purpose across the River

Wainganga in Tahsil & Distr ict Gadchiroli

2. Project Proponent M/ s. Executive Engineer, Minor Irrigation Division, Chandrapur

by Vidarbha Ir r igation Development Corporation (VIDC),

Nagpur, Chandrapur Irr igation Project Circle, Chandrapur

3. Screening Category Item 1 (c) “River Valley Projects” in EIA Notification,

14th September, 2006 and amendments thereafter .

4. Location

Village/ Area Kotgal

Taluka Gadchiroli

Distr ict Gadchiroli

State Maharashtra

Topo sheet Number 55P/ 16 and 64 D/ 4 of Survey of India

Geographical

Coordinate

Particular Latitude Longitude

Bar rage 20012’12” N 790 57’ 33” E

Elevation 201 m MSL

B SALIENT FEATURES OF THE PROJECT

5. River Wainganga

6. Sub Basin Pranhita Sub-Basin

7. River Basin Godavar i Basin

8. Type of project Lift Ir r igation (From 3 Locations)

9. Culturable Command Area (CCA)

Scheme C.C.A. I.C.A.

Kotgal L.I.S. 3294 3000

Porla Wasa L.I.S. 3078 2500

Gogaon L.I.S. 408 370

Virgin Command 1000 750

Total 7780 6620

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10. Tehsil Benefited Gadchiroli

11. Catchment Area

11.1 Gross (for flood calculation) Total: 44200 Sq. Km

Maharashtra: 29297 Sq. km

Madhya Pradesh: 14903

11.2 Free Catchment 4979.18 Sq. km

12 Hydrology

12.1 Average Rainfall 1312.57 mm

12.2 90% dependable gross

monsoon yield

1424.41 mm3

12.3 Deduct upstream utilization 232.78 mm3

12.4 90% dependable net monsoon

yield

1191.63 mm3

12.5 Post monsoon flow 4.85 % 56.83 mm3

12.6 90% dependable net annual

yield

1228.67 mm3

12.7 Regeneration from upstream

project (Completed and

ongoing)

106.58 mm3

13. Utilization

13.1 Irrigation Use

Kotgal LIS 19.869 mm3

Porlawasa LIS 20.614 mm3

Gogaon LIS 3.99 mm3

Virgin Command 6.18 mm3

13.2 Domestic use 10.0 mm3

13.3 Industrial Use 22.0 mm3

13.4 Evaporation losses 20.791 mm3

13.5 Total Utilization 103.444 mm3

14. Design Flood

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14.1 Inglis flood 25891 Cumecs

14.2 Design flood (1.5 times Inglis) 38837 Cumecs

15. Controlling Levels

15.1 T.B.L. 205.03 m

15.2 H.F.L. 201.83 m

15.3 A.H.F.L. 202.33 m

15.4 F.R.L. 197.90 m

15.5 Crest Level 188.90 m

15.6 Average River Bed Level 188.90 m

15.7 Free Board 1.5 m

16. Storage Capacity

16.1 Gross storage at F.R.L. 59.524 Mm3

17. Barrage

17.1 Length of concrete barrage 759 m

17.2 Deepest foundation level 178 m

17.3 Gates (Type, number and size) Ver tical Lift Gates, 42 nos. (Size: 15X9 m)

18. Submergence Within River Banks & nearby Low Lying

areas

1819.36 Ha. Including 379.96 Ha. Pr ivate land

& 56.86 Ha. Forest Land.

19. Lift Irrigation Schemes supported with their ICA

19.1 Kotgal LIS 3000 ha

19.2 Porlawasa LIS 2500 ha

19.3 Gogaon LIS 370 ha

19.4 Virgin Command 750 ha

19.5 Total 6620 ha

20. Cost of Project (SOR 2009-10) 365.71 Crore

21. Benefit Cost Ratio 2:27

C ENVIRONMENTAL SETTINGS OF THE AREA

22 Nearest Road Mull Road at 4.37 km towards South East

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State Highway 9: Chandrapur -Nagpur

Highway at 29.18 km towards West

Nearest Railway Station Rajuli Railway Station at 28.63 km towards

West

Nearest Air Por t Nagpur airpor t at 137 km towards NW

Nearest Town/ Village Kotgal Village at 2.0 km towards SSW

Nearest Water Bodies Project site itself located on Wainganga River

Gadchiroli Lake at 4 km towards SE

Eco Sensit ive Zone (National

Park, Wildlife Sanctuary,

Biosphere Reserve, Wild Life

Corr idors etc.)

Not within 10 km radius study area

Histor ical & Archeological

Impor tant Place, Defense

Establishment

Not within 10 km radius study area

2. INTRODUCTION OF THE PROJECT/ BACKGROUND INFORMATION

2.1 Identification of project

M/ s. Vidarbha Ir r igation Development Corporation, Nagpur under Water Resource

Depar tment, Government of Maharashtra has proposed the Kotgal Barrage Project for Lift

Ir r igation Scheme to ir r igate an area of 7780 Ha of Culturable Command Area (CCA) by util izing

the water from the Wainganga River near village Kotgal, Taluka & Distr ict Gadchiroli, MS. The

project involve construction of Barrage project for providing assured water availability to three

lift ing point i.e. Kotgal LIS (3294 ha CCA), Por lawasa LIS (3078 ha CCA), Gogaon LIS (408 ha

CCA) and Virgin Command (1000 ha CCA). MWRRA approval is enclosed as Annexure-1.

2.2 Brief history of the project

The Kotgal bar rage site falls in the rest of Pranhita sub basin of Godavar i Basin in Gadchiroli

distr ict. This distr ict is largely covered by forest; the percentage of forest cover to its

geographical area is 81%. As such, any storage reservoir involves forest land submergence

attracting the str ingent provision of Forest (Conservation) Act, 1980. This can be gauged from

the fact that out of the 17 sites mentioned in the tr ibunal, 14 sites are in Gadchiroli or

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neighbor ing Chandrapur distr ict, but barr ing 3 projects which were constructed in pre-

independence era, all other sites except Dina project could not completed and held for forest

land clearance. To get through this problem, taking up of Lift Ir r igation Schemes is promoted.

To increase the viability of LIS proposed on the bank of r iver , it is felt necessary to construct

the barrages which will help in stabilization of these lift ir r igation schemes. The Kotgal barrage

is one amongst them.

2.3 Need for the project and its importance to the country and region.

India take up 3.29 mill ion sq. km geographical area, which forms 2.4% of the wor ld’s land area,

it supports over 15% of the wor ld’s population. India suppor ts about 1/ 6th of wor ld population,

1/ 50th of wor ld’s land and 1/ 25th of wor ld’s water resources. India also has a livestock

population of 500 mill ion, which is about 20% of the wor ld’s total livestock population. More

than half of these are cattle, forming the backbone of Indian agr iculture. The total ut ilizable

water resources of the country are assessed as 1086 km3. The gross ir r igated area is 80 mill ion

ha which gets India the pr ize for the largest amount of ir r igated agr iculture in the wor ld.

The minor irr igation is now the major source as groundwater provides 50 per cent of the gross

area under ir r igation (in fact recent data shows that in terms of net sown area, groundwater

provides 60 per cent of the net ir r igated area. Details of Ir r igated area in India are given below:

Table 1: Irrigated areas in India

Particular Utilization

(In million ha)

Capacity

(In mha)

Ultimate irrigation

potential (In mha)

Major, Medium & minor 28.02 32.69 58.50

Groundwater 42.50 45.73 64.05

Sur face 10.12 10.89 17.38

Sub Total 52.62 56.62 -

Total 80.54 89.31 139.90

There are many regions of India with hard rock geology which have lower groundwater

potential than the alluvial plains. Since groundwater extraction is pr imar ily dr iven by the needs

of the population and the density of farmer population and not the quality of resource,

groundwater ir r igation is scaling up even in such hard rock areas causing ir reversible

depletion of the resource base.

Til l the 1990s, Finance Ministers used to say that ‘Every budget is a gamble on the monsoon’.

For more than 70 per cent of the Indian population, l iving in rural India and dependent on

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agr iculture directly or indirectly, the monsoon controlled their purchasing power year after

year . Even now, when agr iculture contr ibutes less than 20 per cent to the national economy,

more than 600 mill ion people are dependent on agr iculture for their l ivelihood. Therefore,

ir r igation infrastructure, which has the potential to insure the farmer against the vagar ies of

the monsoon and increase his income from a small (and diminishing) land holding, is the most

cr itical infrastructure for rural India.

There have been several studies which have established immense benefits of ir r igation. The

increased food secur ity of the country, increased agr iculture incomes in ir r igated areas, the

success of the green revolution, are all l inked to timely availability of water for crops not

dependent on rainfall alone. In addit ion to the direct benefits there are indirect benefits

emanating from forward and backward integration. Studies both at the village level and

regional level have shown these indirect impacts.

For every Rs. 100 of direct benefits the Bhakra dam generated 90 rupees of indirect benefits for

the regional economy and had an impact in areas even beyond the region (World Bank, 2005).

Similar ly, the impact of the green revolution in the North Arcot region of Tamil Nadu proved

that each rupee spent on ir r igation led to an additional value generation in the non-farm

economy (IFPRI, 1985). About 50 per cent of the growth in the non-farm economy was due to

agr icultural demand for inputs and marketing services and the remaining 50 per cent was

because farmers as consumers had higher purchasing power to buy more consumer and other

goods (Chambers, 1988). In fact, the provision of ir r igation improved the returns on social

sector investment as well. Returns to five years of education were 32 per cent in ir r igated

distr icts and nil in un-ir r igated distr icts (Pr itchett, 2002). Major positive impacts impact of

ir r igation on the livelihoods of the rural poor comes about through employment incomes,

secur ity against impover ishment, non-compulsive migration, and improvement in the quality

of life.

In terms of food secur ity in India, the 35 per cent ir r igated area provides more than 60 per cent

of the food production. Studies show that at the vil lage level ir r igation provides higher and

more stable employment and the poor are the major beneficiar ies. In fact, the contr ibution of

ir r igation to employment is greater than even high yielding var iet ies. The increase in value and

incomes which ir r igation provides can also be judged by two other indicators: (a) increase in

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land pr ices after a rain fed area got access to ir rigation and (b) the large pr ivate investments

made by individual farmers in ground water ir r igation.

A major concern regarding the ir r igation systems, especially, that provided by large dams is

that it benefits only large farmers. In addit ion the increased income of laborers who are not

direct beneficiar ies of the ir r igation system is substantial. Besides, with the increased number

of working days, the wage rate is also likely to increase when there is provision of ir r igation.

These are great benefits, especially, for the landless that have to migrate every year to urban

areas to get employment dur ing the non-monsoon per iod leading to fragmentation of families.

Continuation on the above, proposed project located in near village Kotgal, Taluka & Distr ict

Gadchiroli, MS w ill definitely add the ir r igation capacity of the region, State and country as

whole.

2.4 Benefit of Project

This proposed project is to provide a comprehensive ir r igation solution and enable increase in

agr icultural productivity through equitable distr ibution of ir r igation water with lesser

electr ical power consumption. After visit ing the proposed project site, we have come up with a

comprehensive ir r igation solut ion suited to the local needs of the region. The objective of this

proposal is to increase the water use efficiency and thereby increases the area under

cult ivation to improve the standard of l iving of farmers. Total 7780 Ha (CCA) area is planned to

be ir r igated by the scheme.

3 PROJECT DESCRIPTION

3.1 Type of project including interlinked and interdependent projects, if any.

This is completely independent project and not inter linked with any other project. The project

involve construction of Barrage project for providing assured water availability for three lift ing

point i.e. Kotgal LIS (for 3294 ha CCA), Por lawasa LIS (for 3078 ha CCA), Gogaon LIS (for 408 ha

CCA) and Virgin Command (1000 ha CCA).

3.2 Regulatory Frame Work

As per the schedule attached to the EIA Notification, 2006 and its amendment thereafter the

proposed project is covered under Project or Activity of 1(c), namely “River Valley Projects”,

requires pr ior Environmental Clearance (EC). It is categor ized as Category ‘B’ project and

requir ing Environmental Clearance from the State Environment Impact Assessment Author ity

(SEIAA), Government of Maharashtra.

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3.3 Location with coordinates

The proposed project is located across River Wainganga near Kotgal Village, Taluka & Distr ict

Gadchiroli, Maharashtra. The project falls under the geographical co-ordinates of Latitude: 20°

12' 12" N and Longitude: 79° 57' 33'' E at 201 m MSL.

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Figure No. 1: Project Location Map

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Figure No. 2: 10 Km Radius Toposheet map

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Figure No. 3: Command map

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Figure No. 4: View of Barrage Axis

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Figure No. 5: View of Index map of Kotgal Lift Irrigation Scheme

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Figure No. 5: View of command map

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Figure No. 7: Cross Section of Barrage

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Figure No. 8: L Section of Barrage

67

5

66

0

64

5

63

0

61

5

60

0

19

7.2

95

19

6.9

55

19

7.2

75

19

7.7

15

19

8.2

50

19

8.7

50

202.000

203.000

204.000

205.000

206.000

207.000

187.000

188.000

185.000

186.000

183.000

184.000

SALIENT FEATURES:

179.000

178.000

177.000

176.000

175.000

174.000

173.000

172.000

171.000

171.725

R.D

. 1

95

.00

179.680

180.610

174.585

R.D

. 3

90.

00

R.D

. 5

85.

00

R.D

. 7

80.

00

G.L.PROFILE

LEVELS 17

9.0

85

18

3.6

10

17

6.0

25

18

7.0

45

4000APPROACH EMBANKMENT

TBL 205.200

4000

CREST 189.000

F.R.L. 198.00

FDN. 179.000

DIVIDE WALL

KEY WALL (TENTATIVE)

H.F.L. 202.200A.H.F.L. 202.700

PIER TOP LEVEL203.700

TBL 205.200

SPILLWAY 761000

1500

FDN. 183.000

FRESH ROCK LINE

FRESH ROCK LINE

1

1.10

1.10

1

0.95

1

0.95

C.C.M15C.C.M15

30003000

1

40

6.

R.D

. 6

94

R.D

. 1

45

5

7. PIER LAYOUT SHOWN IS TENTATIVE AND WILL BE FINALISED BY M.D. WING OF

C.D.O. ,NASHIK.

8. DETAILS OF BLOCKOUT FOR SILL BEAM, STOPLOG GATE, SERVICE GATE

SHOWN ARE TENTATIVE.

9. PIER IS PROPOSED IN C.C.M-20 AND BLOCKOUTS ARE PROPOSED IN C.C.M-25.

10. THIS DRAWING IS PREPARED AS PER C.E. , W.R.D., NAGPUR'S

MARATHI LETTER NO. 1079 /T.S.-7 /KOTGAL BARRAGE/12/DATED 02/03/2012.

11. THIS DRAWING SHOULD NOT BE USED FOR EXECUTION.

26390

33

36

22

1500

CHAINAGE

180.000

FRESH ROCK

189.000

182.000

181.000

190.000

192.000

191.000

194.000

195.000

193.000

198.000

196.000

197.000

201.000

200.000

199.000

COMMUNICATED BY FIELD OFFICERS.

ALL LOOSE, FRACTURED ROCK SHOULD BE REMOVED BEFORE LAYING

THE FOUNDATION SHOULD BE APPROVED BY COMPETENT AUTHORITY.

VERTICAL LIFT TYPE GATES OF SIZE 15 M X 9 M : 42 Nos.ARE PROPOSED.

FOUNDATION.

ALL DIMENSIONS ARE IN MILLIMETRES AND REDUCED DISTANCES & LEVELS

GROUND LEVELS ARE TAKEN AS PER DRAWING SUPPLIED BY FIELD OFFICER.

THE FOUNDATION GRADE ROCK LINE IS BASED ON BORE HOLE DATA

DIMENSIONS ARE NOT TO BE SCALED OUT FROM DRAWING.

ARE IN METRES UNLESS OTHERWISE SPECIFIED.

1.

2.

KOTGAL BARRAGE

R.L. 189.00 M1) CREST R.L.

R.L. 198.00 M

R.L. 202.20 M

R.L. 203.70 M

R.L. 205.20 M

2) F. R. L.

4) T.B.L.

2) H. F. L.

3) PIER TOP LEVEL

DATE: /04/2012 CDO.DRG.# /2012

18

8.1

90

CREST 189.000

18

8.5

30

18

9.2

30

18

8.7

70

18

8.1

00

18

8.1

80

18

8.2

75

18

8.3

55

18

8.9

45

19

0.4

85

18

7.7

35

18

6.8

50

18

7.0

80

18

8.9

65

19

0.2

90

19

0.0

15

18

8.9

80

19

8.1

05

19

0.0

00

18

9.6

40

18

8.8

85

18

8.7

95

18

7.9

35

18

6.2

85

18

5.8

30

19

7.3

95

69

4

18

8.1

15

18

8.3

95

18

8.9

30

18

8.9

75

18

8.9

75

18

9.4

70

19

0.2

25

18

6.5

50

18

6.2

80

18

6.3

60

18

7.1

55

18

8.5

60

18

9.0

15

18

9.2

00

18

8.8

40

19

0.3

30

19

1.5

50

19

8.8

70

19

9.0

70

84

0

70

5

72

0

75

0

76

5

78

0

79

5

81

0

82

5

85

5

87

0

88

5

90

0

91

5

93

0

94

5

96

0

97

5

99

0

10

05

10

20

10

50

10

65

10

95

11

10

11

25

11

40

11

55

11

70

11

85

12

00

12

15

12

30

12

45

12

60

12

75

12

90

13

20

13

35

13

50

13

65

13

80

13

95

14

10

14

25

14

40

14

55

14

70

3000

3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29 30 31 32 33 34 3521 36 37 38

1

18

9.2

60

18

9.6

00

19

0.2

20

18

9.0

20

18

8.3

80

18

8.6

15

10

35

10

F.R.L. 198.00

3

4

5

SCALE HOR : 1:1250

VERT : 1:100

L O N G I T U D I N A L S E C T I O N

CHAINAGE

DATUM 170.000

GROUND LEVEL

COMMUNICATED BY FIELD OFFICERS.

ALL LOOSE, FRACTURED ROCK SHOULD BE REMOVED BEFORE LAYING

THE FOUNDATION SHOULD BE APPROVED BY COMPETENT AUTHORITY.

FOUNDATION.

ALL DIMENSIONS ARE IN MILLIMETRES AND REDUCED DISTANCES & LEVELS

GROUND LEVELS ARE TAKEN AS PER DRAWING SUPPLIED BY FIELD OFFICER.

THE FOUNDATION GRADE ROCK LINE IS BASED ON BORE HOLE DATA

GENERAL NOTES & REFERENCES

DIMENSIONS ARE NOT TO BE SCALED OUT FROM DRAWING.

ARE IN METRES UNLESS OTHERWISE SPECIFIED.

1.

2.

LONGITUDINAL SECTION OF BARRAGE

R.L. 1) CREST R.L.

R.L.

R.L.

R.L.

R.L.

2) F. R. L.

4) T.B.L.

2) H. F. L.

3) PIER TOP LEVEL

SHEET NO. 2/4

GOVERNMENT OF MAHARASHTRA

WATER RESOURCES DEPARTMENT

CENTRAL DESIGNS ORGANISATION(GATES),NASHIK-4

GO2/KOTGAL/GL/

18

8.8

65

73

5

10

80

13

05

3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

FDN. 179.000

R.D

. 0

.00

21 36 37 38

DIVIDE WALL

1500

KEY WALL (TENTATIVE)

182.545

18

6.9

40

H.F.L. 202.200

10

A.H.F.L. 202.700

3

4

5PIER TOP LEVEL 203.700

39 40 41

3000

35 42

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3.4 Details of alternate sites considered

No other alternative site identified/ considered as proposed site is found feasible with techno-

economical & environmental point of view.

3.5 Size or magnitude of project

The capacity of Proposed Lift Ir r igation project given below:

Table 2: Project Capacity

Capacity of Project

Scheme C.C.A. (ha) I.C.A. (ha)

Kotgal L.I.S. 3294 3000

Por la Wasa L.I.S. 3078 2500



Total 7780 6620

3.6 Project description with process details

Proposed project involve construction of Concreate Bar rage across Wainganga River , at Village

Kotgal, Taluka & Distr ict Gadchiroli, MS and lift ing of water from three location i.e. Kotgal LIS

(3294 ha CCA), Por lawasa LIS (3078 ha CCA), Gogaon LIS (408 ha CCA) and Virgin Command

(1000 ha CCA).

3.7 Water Availability

In l ine with the tr ibunal provision of water allocation, it is though appropr iate to check the

water availability from the catchment of rest of Pranhita sub basin. Thus the catchment area

below Gosikhurd, Lower Chulband, It iadoh, Satti, Tultuli and Kathani on left bank flank and

Buti, Daradi and Nimbughat on r ight flank is considered for yield calculat ion. The catchment

area is 4979.18 sq. km. For calculation the weighted rainfall of above catchment, 7 rain gauge

stat ions (Armoli, Bhimkund, Bonde, Chawale, Gosikhurd, Kurkheda & Lakhandur ) well

distr ibuted in and around the catchment area are considered. The rainfall-Runoff equations

developed at Pauni G&D site for Gosikhurd Project are used for yield estimation. The post

monsoon percentages are drawn from actual observed flow pattern of Wainganga r iver at Asthi

G&D site of Central Water Commission.

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The water availability studies for Kotgal Barrage Project has been cert ified by C.E. Hydrology

Project (SW), Nasik Vide cert ificate no. 561 dated 14.05.2010. The same is enclosed as

Annexure-2

Sr. No. Particulars Quantity

1 90% dependable monsoon yield gross) as cert ified by C.E.

Hydrology Project, Nasik

1424.41 Mm3

2 Deduct upstream util izations of Completed Ongoing,

administrat ively Approved for Future schemes

232.78 Mm3

3 Balance yield 1191.63 Mm3

3.8 Cropping Pattern and Crop Water Requirement

The proposed Kotgal barrage suppor ts:

1) Kotgal LIS

2) Porlawasa LIS

3) Gogaon LIS and

4) Some Virgin command on bank of Kathani r iver

The Goagaon LIS (minor) is near ly completion and Kotgal LIS is administrat ively approved.

Hence their crop pattern is kept unchanged.

The Lotgal LIS having eight monthly cropping patterns dominated by khar if and Rabi crops.

Keeping this in mind Paddy is the predominant crop in the region, the cropping pattern

proposed for schemes other than Kotgal & Gogaon LIS is shown in the comparative table below:

Table No.3: Comparative sheet of cropping pattern of Kotgal LIS, Other LIS and Gogaon

LIS

Cropping Pattern

Kotgal LIS

(AA Approved)

ICA (3000 Ha)

Other LIS

(Porlawasa 2500, Virgin

command 750) Total =3250 ha

Gogaon L.I.S.

(Nearing completion)

370 ha

Sr.

No. Crop %

Area

(Ha)

Sr.

No. Crop %

Area

(Ha)

Sr.

No. Crop %

Area

(Ha)

Perennial 0 Perennial 0 Perennial

1 Hort iculture 14 51.8

Two

Season

Two Season Two Season

1. Chilies 6 180 1 Challis 5 162.5

2 Turmer ic 5 162.5

Kharif

Season

Kharif

Season

Kharif

Season

2 Hy. Yielding

Paddy

65 1950 2 Hy. Yielding

Paddy

70 70 2 Paddy Season 60 222

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Cropping Pattern

Kotgal LIS

(AA Approved)

ICA (3000 Ha)

Other LIS

(Porlawasa 2500, Virgin

command 750) Total =3250 ha

Gogaon L.I.S.

(Nearing completion)

370 ha

3 Kh.

Vegetable

6 180 3 Kh. Vegetable 10 10 3 Soya bean 20 74

4 Oil seeds

(Ground

nut)

5 150 4 Soya bean 5 5 4 Pulses U.I. 6 22.2

5 Pulsus (Tur) 18 540 5 Pulsus (Tur) 6 5

Total 100 3000 Total 100 3250 Total 100 370

Rabi

Season

Rabi Season Rabi Season

6 Wheat 30 900 5 Gram 15 55.5

7 Rabi

Vegetable

5 150 7 Wheat 20 650 6 Vegetable 25 92.5

8 Gram 8 240 8 Rabi

Vegetable

15 487.5 7 Cereals 20 74

9 Sunflower 10 300 9 Gram 25 812.5 Hot weather

10 Hy. Jawar 5 150 10 Sunflower 10 325 8 Ground Not 13 48.1

9 Vaisakhi

moog

5 18.5

Total 58 1740 Total 70 2275 Total 78 288.6

Grand Total 158 4740 Grand Total 170 5535 Grand Total 178 658.6

The crop water requirement for Kotgal LIS crop pattern is 6.623 Mm3/ 1000 ha while the crop

water requirement for other crop pattern is 8.245 Mm3/ 1000 ha and for Gogaon LIS it is 10.77

Mm3/ 1000 ha as per modified Penman method.

3.9 Simulation

Based on the above mentioned yield ser ies of 30 years (19079-2008) and crop water

requirement along with dr inking water (10 Mm3) and Industr ial water provision (22 Mm3)

simulation study is car r ied out. It shows the success rate of 90%.

3.10 Command

The barrage support three lift ir r igation schemes and some virgin command. All the command

is from Gadchiroli distr ict; on left bank of Wainganga River . The other bank i.e. r ight bank is

commanded by Gosikhurd project RBC and hence not proposed under this barrage. However

storage created by the barrage will cater from dr inking water supply to Gadchiroli City and

nearby villages and catt le populace in addit ion to industr ial demands in future. The details of

their command are as follows.

Table 4: Command details


Kotgal L.I.S. 3294 3000

Por la Wasa L.I.S. 3078 2500

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Total 7780 6620

3.11 Water utilization

The total water ut il ization proposed through above lift ir r igation schemes and virgin

commands are as follows:

Table 5: Water utilization details

Sr. No. Schemes Water utilization

(Mm3)

Consumptive

(Mm3)

1 Kotgal L.I.S. 19.869 19.869

2 Por la Wasa L.I.S. 20.614 20.614

3 Gogaon L.I.S. 3.99 3.99

4 Virgin Command 6.18 6.18

Sub Total 50.653 50.653

5 Dr inking Water provision 10 2

6 Industr ial Water provision 22 0.55

7 Evaporation losses (75%

Dependability, Year 1985)

20.791 20.791

Sub Total 52.791 23.341

Total 103.444 73.994

The consumptive use is computed as per the guidelines given in Godavar i water disputes

tr ibunal.

The tr ibunal st ipulates the consumptive use of dr inking water use @ 20% and for industr ial

use it is 2.5 % only. It is seen that the condition for water util ization st ipulated by tr ibunal in

rest of Pranhita sub basin is satisfied and at no one place the water use is more than 1.5 TMC.

3.12 Alignment

The alignment is proposed at this location having high bank (10 m) and nar row gorge. The

width of River at this location is 750 m (RD 690 to RD 1440) with exposed sound rock in some

part of River bed.

As per planning the barrage shall have storage capacity of 59.524 Mm3 well within banks.

Hence there is almost no submergence of pr ivate land. Under this Barrage water shall be

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utilized to ir r igate 6620 ha of land (I.C.A.) through three different l ift schemes & virgin

command, dealt below in details.

3.13 Catchment Area

The gross catchment area up to the project site is 44200 sq. km. (17065.65 sq. miles) of which

14903 sq. km. lies in MP & remaining 29297 sq. km. lies in Maharashtra State. The free

catchment area considered for yield calculat ions are 4979.18 sq. km.

3.14 Flood study

The r iver has flatter gradient of 1: 2795. The designed flood is worked out by Inglis formula,

which is 25891 cumecs. However magnitude of flood is considered 1.5 t imes i.e. 38837 cumecs

value for fixing var ious controll ing levels of barrage.

The 100 years return flood calculated by Gumbel’s method is 38373 cumecs which also closely

tallies with 1.5 of Inglis flood. Thus the flood HFL for this flood is kept at RL 201.830 m.

consider ing the construction caused by 41 number of piers of said barrage the magnitude of

afflux is worked out to be 0.5 m. This way the afflux HFL is kept at RL 202.330 m. The var ious

controll ing levels fixed are as under .

3.15 Sill Level of Barrage

The Sill level of barrage is proposed at RL 188.900 m which coincides with average bed level of

the r iver . This way there shall be no silt deposit dur ing the flood as the gates shall be kept open

dur ing the flood. Also there shall be full uti l izat ion of storage.

3.16 FRL

To store maximum yield and fulfi l l the requirements, the FRL is fixed at RL 197.900 m, which is

well within the banks of River . Thus the live storage up to F.R.L. shall be 59.524 Mm3.

3.17 HFL

The HFL at bar rage site, consider ing the Designed discharged or r iver , worked out as 201.830

m.

3.18 AHFL

The AHFL calculat ions are done. Thus the afflux of 0.5 m is worked out. This way AHFL is fixed

at RL 202.330 m.

3.19 Top of Pier

Keeping from board of 1.50 m above AHFL the Top of Pier is kept at RH 203.830 m.

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3.20 Top Level of Bridge

The top level of br idge is fixed at RL 205.030 m keeping in view thickness of deck slab & beam

height.

The final controll ing levels proposed are as follow:

Sill level of Bar rage : 188.900 m

FRL : 197.900 m

HFL : 201.830 m

AHFL : 202.330 m

Top of Pier : 203.830 m

Top level of Br idge : 205.030 m

3.21 Approaches

For access of br idge (RL 205.030 m) & to arrest normal flood, approaches are proposed from

both the flanks. These approaches shall have ruling gradient of 1:100 or flatter to touch natural

ground level. The top width of this embankment shall be 10 m in width at top with side slopes

1:2.5 & 1:2 on u/ s & d/ s respectively. The section of this embankment includes heart ing zone,

casing zone, pitching on both slopes up to HFL.

3.22 General Layout

General layout of barrage is prepared on the basis of above controlling levels and sub-surface

exploration data available.

3.23 Sub-Surface Geology

Bore holes numbers 5 numbers are executed on proposed barrage line, of which two on either

bank. Three bore holes results shows availability of sound hard rock at an average depth of

3.00 m (RL 185.890 m) in middle 510 m por tion of r iver bed. On left flank with 105 m in River

bed por tion the rock level seen deeper i.e. 6.25 m (RL 182. 75 m). Whereas on r ight flank with

105 m in r iver bed por tion the rock level observed 5.20 m (RL 183.80 m).

3.24 Foundation level

On the basis of sub surface exploration results the foundation levels are tentatively fixed. The

left side 105 m port ion of Bar rage shall have foundation on RL 178.00, in middle 510 m of

Barrage shall have Foundation on RL 178.00, in middle 510 m of Bar rage 183.00 & rest Right

side 105 m the foundation level proposed at RL 181.00 m. Foundation RL of protection work

(Divide wall, Guide wall etc.) on L/ S and R/ S is proposed at RL 178.00 m and 181.00 m

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respectively. However these levels may be revised dur ing execution as per actual strata met

with.

3.25 Gate and Openings

River bed width at site is measured about 750 m (RD 690 to RD 1440 m). So 42 gates of 15.0 m

each opening is proposed with pier width 3.0 m. Only pier number 22 & 23 are of 4.5 m width

to accommodate the sluice gates. This arrangement covers the entire width of River. This way

the gates shall be total 42 numbers of sizes 15.0 X 9.0 m each. End piers shall have width of

1.50 m.

3.26 Sluice Gates

Tow numbers of sluice gates of size 1.2X1.2 m are proposed for releasing controlled discharged

of water for downstream requirements.

3.27 Piers

Piers of length 17.00 m in length and 3.00 m in width is proposed to accommodate vert ical lift

gates, stop log gates with deck slab of br idge on top for road communication of traffic. Only pier

number 22 & 23 are of 4.5 m width to accommodate the sluice gates.

3.28 Energy Dissipation Arrangement

Length of st il l ing basin 30 m is proposed as per detailed calculat ions at RL 186.00 m. The width

shall be 759.00 m. End weir shall have 1 m top width at RL 188.10 as per design.

3.29 Protection work

L/ S and R/ S protection of bank are proposed with guide walls and divide walls with proper key

walls. Length of return wall is kept sufficient to have proper keying into the banks. The

top of guide walls is proposed at RL 199.00 m which is 1.1 m higher than FTL and coincides

with the ground level of r iver bank. The top of Divide wall is at RL 204.900 (TBL) which joins

U/ S & D/ S Guide walls RL with the slope of ear then embankment on either side of bar rage.

3.30 Grade of Concrete

On the basis of Government guide lines the grades of Concrete for different components of the

Barrage are proposed as under:

Divide wall, Guide Wall, Key Wall etc. : M-15 (40 MSA)

Weir body, Crest, Stil ling Basin, Launching Apron etc. : M-20 (40 MSA)

Piers : M-25 (40 MSA)

Pier cap, Deck slab of Br idge : M-25 (20 MSA)

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3.31 Water availability Studies for Kotgal Barrage Project

The water availability studies for Kotgal Barrage project is enclosed as Annexure-2

4 DRAINAGE

4.1 Godavari River Basin

The Godavar i r iver basin is formed by the r ivers and their tr ibutar ies such as Darna, Pravara,

(or iginates from Western Ghats); Sindphana, Manjara, Manar (from Balaghat Range); Purna,

Bhagwati, Dudhana (from Ajanta Range) of the Uttar Maharashtra and the Marathwada regions

as well as the r ivers like Painganga, Wardha, Pench, Wainganga, Indravati, Pranhita from the

Amravati and Nagpur regions in turns meets Godavar i r iver part ly in the State of Maharashtra,

part ly in the State of Andhra Pradesh and par tly on these State boundar ies. The basin Code

number is 3 and having an area of 302063.93 Km2.

The r iver Godavar i, the largest of the peninsular r ivers, and third largest in India, drains about

10% of India's total geographical area. The catchment area of the r iver is 3, 12,812 sq.km. and

is spread in the states of Maharashtra (48.6%), Andhra Pradesh (23.4%), Madhya Pradesh

(10.0%), Chhatt isgarh (10.9%), Or issa (5.7%) and Karnataka (1.4%). The basin lies in the

Deccan plateau and is situated between latitude 160 16' 00" North and 220 36' 00" Nor th and

longitude 730 26' 00" East and 830 07' 00" East.

The r iver Godavar i r ises at an elevation of 1,067 m in the Western Ghats near Thr iambak Hills

in the Nasik distr ict of Maharashtra. After flowing for about 1,465 km., in a generally south-east

direction, it falls into the Bay of Bengal. About 64 km. from its source, the Godavar i receives the

waters from Dharna, on its r ight bank and a shor t distance downstream the Kadana joins it

from the left. The combined waters of the Pravara and Mula which r ise in the hil ls of Akola join

the r iver from left about 217 km. from its source. About 338 km. from its source, the r iver

receives the combined waters from the Purna and Dudhna r ivers and after a fur ther 138 km. at

the border of Maharashtra and Andhra Pradesh, the waters of the Manjira r iver joins it from the

South. At this point, Godavar i flows at an elevation of about 329 m.

The r iver Pranhita, conveying the combined waters of Penganga, the Wardha and Wainganga,

which drain Nagpur and southern slopes of the Satpura ranges, falls into Godavar i about 306

km. below its confluence with the Manjira. The waters of the Indravathi join the r iver Godavar i

48 Km downstream. The last major tr ibutary is the Sabar i from Orissa, which joins the

Godavar i, 100 km. up-stream of Rajahmundry.

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The largest tr ibutary of the Godavar i is the Pranhita with about 34.87% coverage of drainage

area. The Pravara, Manjira and Maner are r ight bank tr ibutar ies cover ing about 16.14%, the

Purna, Pranhita, Indravathi and Sabar i are impor tant left bank tr ibutar ies, cover ing near ly

59.7% of the total catchment area of the basin. The Godavar i in the upper , middle, and lower

reaches make up for the balance 24.16%. The part iculars of the catchment area, length,

elevation of the source points of the r iver and its tr ibutar ies in the order of their occurrence

along the length of the main r iver are indicated in the table below.

Table No. 6: Important Tributaries of Godavari

Sl. No. Name of River Elevation of

Source

Length of

Tributary

(km)

Catchment

area (sq. km)

Average

1 Upper Godavar i

(source to Manjira

confluence)

1,067

675

33502

770

2 Pravara 1,050 208 6537 606

3 Purna 838 373 15579 797

4 Manjira 823 724 30844 846

5 Middle Godavar i

(between

confluence points

Manjira and

Pranhita)

323

328

17205

955

6 Maner 533 225 13106 932

7 Penganga 686 676 23898 960

8 Wardha 777 483 24087 1055

9 Pranhita 640 721 61093 1363

10 Lower Godavar i

(Pranhita

confluence to sea)

107

721

24869

1208

11 Indravati 914 535 41665 1588

12 Sabar i 1,372 418 20427 1433

Godawar i River basin in Vidarbha Region constituted by three r ivers i.e. Wardha, Wainganga,

and Painganga r iver sub basin.

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Wardha Sub-basin: It or iginates in Satpura Range near Multai in Madhya Pradesh. It is a

tr ibutary of the Pranhita r iver, which ult imately flows into the Godavar i River . The important

tr ibutar ies of Wardha r iver are Vena r iver, Bembala and Painganga r iver .

Wainganga Sub-basin: The Wainganga r iver , which or iginates about 12 km. from Mundara

vil lage of Seoni distr ict in the southern slopes of the Satpura Range of Madhya Pradesh, and

flows south through Madhya Pradesh and Maharashtra in a very meander ing course of roughly

360 miles. After joining the Wardha, the united stream was called the Pranhita, finally empties

into the River Godavar i. The pr incipal tr ibutar ies of the Wainganga are the Garhavi, Kathani,

Khobragadi and Potphondi on the western bank and Andhar i on the eastern bank.

Painganga Sub-basin: The Painganga r iver is the major r iver of Yeotmal distr ict of

Maharashtra State. It or iginates in the Ajantha ranges in Aurangabad distr ict in Maharashtra. It

flows through Buldhana and Washim distr icts and acts as a boundary between Yavatmal and

Nanded distr icts of Maharashtra. It finally empties into Wardha r iver near a small vil lage called

Wadha in Wani Tehsil of Yavatmal distr ict.

4.2 Warda Sub-River Basin

The Wardha River is one of the biggest r ivers in Vidarbha region in India. The Wardha River

joins the Wainganga River south of Chamorshi and forms the Pranahita River at Adilabad

Distr ict, Telangana. Wardha or iginates at an altitude of 777 meters Satpura Range in village

khairwani near Multai, Betul Distr ict of Madhya Pradesh. From the or igin it flows 32 km

in Madhya Pradesh and then enters into Maharashtra. After traversing 528 km, it joins

the Wainganga forming the Pranahita, which ultimately flows into the Godavar i River. Kar,

Wena, Jam, Erai are the left tr ibutar ies and Madu, Bembla, Penganga are the r ight tr ibutar ies.

4.3 Kanhan River-Hydrology

The Kanhan River is an impor tant r ight bank tr ibutary of the Wainganga River draining a large

area lying south of Satpura range in central India. Along its 275 km run through the Indian

States of Maharashtra & Madhya Pradesh, it receives its largest tr ibutary - Pench River , a major

water source for the metropolis of Nagpur.

The Kanhan r ises on the slopes of the hil ls at the southern edge of the Satpura range to the

north of Damua, a town in Madhya Pradesh, India. The Kanhan is Wainganga's longest

tr ibutary, at 275 km. It r ises in the southern spurs of the Satpura Range in the north-western

region of Chindwara Distr ict. Flowing south from its or igin, Damua is the first town it

encounters. Here it intersects the town and allows for its flow to be controlled by means of a

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dam. It then runs along a south & southeastern direction, meander ing through the countryside

of Chindwara Distr ict where it has been productively harnessed for growing Tur dal and cotton.

The r iver comes to lie about 5 km to the south of Deogarh for t where it humbly receives an

insignificant tr ibutary. Upon reaching the town of Ramakona it is crossed by a rail br idge as

well as another road br idge which supports NH-26 B. Near ly at the end of its course in Madhya

Pradesh, it is joined by Jam River, and for a short distance provides a natural boundary with

adjoining state Maharashtra.

Within Maharashtra the r iver is at its widest at Kamptee where it receives the Pench River- a

left bank tr ibutary and its largest one. Another tributary connecting it at its r ight bank is Kolar

River - the spill off from Kolar Dam. The r iver now comes to be at the northeast of Nagpur from

which it receives the metropolitan city's effluent waste by way of the Nag River. A lit tle fur ther

from Kamptee, it flows along the town Kanhan - its etymology der ived from the r iver. Situated

alongside the town is a large coal mine, one of the many coal mines situated along its r iver

basin. From here the r iver flows south-east and ends its course by joining the Wainganga at the

vil lage of Ambora in Nagpur Distr ict.

4.4 Nag River-Hydrology

The Nag River is a r iver flowing through the city of Nagpur in Maharashtra, India. It is known

for providing the etymology for the name Nagpur. Forming a par t of the Kanhan-Pench r iver

system, the Nag River or iginates in Ambazar i Lake and joins the Pili River before pour ing into

the Kanhan River .

5 GEOMORPHOLOGY

Gadchiroli distr ict is an administrative distr ict in Maharashtra, India. The town of Gadchiroli is

the administrative headquar ters of the distr ict. Gadchiroli Distr ict is situated in the south-

eastern corner of Maharashtra, and is bounded by Chandrapur Distr ict to the west, Gondia

Distr ict to the north, Chhattisgarh state to the east, and Telangana state to the south and

southwest. Gadchiroli Distr ict was created on 26 August 1982 by the separation of Gadchiroli

and Sironcha tehsils from Chandrapur Distr ict.

5.1 Information on Distribution of Geological formation

Scale Group Formation Location Area

Recent Recent (G)Alluvium

(F)Later ite

Restr icted along r ivers

and nalas banks.

Dhanora, Kurkheda and

Northern Etapalli

42416 Ha.

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Scale Group Formation Location Area

Gondwana (E) Upper Sand stone, clays

(D) Lower Kamthi

Ferruginious Sandstone and

clays

Sironcha 43969 Ha.

Pre-

Cambrian

(C) Vindhyan Sandstone,

Limestone, Conglomerates (B)

Cuddapaha Shales

Aher i

Sironcha

162877 Ha.

Archeans Oldest crystall ine and

metamorphic ie Igneous and

schist with quartzite and

banded Hematite and

quartzite, granite

All talukas of Gadchiroli

Distr ict except Sironcha

1278286 Ha.

The major lineaments trends are NW-SE, NE-SW and NS. The NW-SE linaments are more

common and can be correlated to the trend of the Godavar i. The longer lineaments are

considered to be deep seated fractures in the crust.

A shear zone encompassing two parallel sets of lineaments has been marked trending NW-SE

near Chamorshi town. Copper Mineralisation is associated with this shear zone. Iron ore, base

metals, bar rettes, limestone, corundum, talc are some of the important economic minerals

occur r ing in the distr ict. The distr ict can be divided into six geomorphic units of structural,

denudational and fluvial or igin.

5.2 Structural Origin: Structural Hill/ Ridges

Lithologically these consist of metamorphic rocks of Archaean and Proterozoic age.

5.3 Denudational Origin: Denudational Hills, Pediments / Pediplains

Denudational hil ls are low relief hil ls mostly covered with vegetation. While Pediments are

concave surfaces developed at Junction of hills with the plains and exhibit undulating

topography and are dissected.

5.4 Fluvial Origin: Older and Younger Alluvial Plains

The Wainganga and Godawar i have developed extensive alluvial deposits along their courses.

The older alluvial plain is a flat sur face of large aer ial extent gently sloping towards these r ivers

and representing an ear lier cycle of deposition. The unconsolidated mater ial in this unit

consists of sand silt and kankar with thickness as high as 30 m. The younger alluvial unit

represents a later cycle of deposit ion.

Geologically the distr ict contains almost all geological formations except Deccan Trap. The

distr ibution of geological formation can be descr ibed in the following table.

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The main r iver basin of the distr ict is the Godavar i, which flows west to east and forms the

southern boundary of the distr ict. The major tr ibutar ies of the Godavar i are the Indravati and

the Pranhita, which is in turn formed by the confluence of the Wainganga and the Wardha near

Chaprala village of Chamorshi Taluka.

Dhanora, Etapalli, Aher i and Sironcha talukas in the eastern par t of the distr ict are covered by

forest. Hills are found in Bhamragad, Tipagad, Palasgad and Sur jagad area. The eastern par t of

Gadchiroli is mainly hilly area.

6 CLIMATIC CONDITIONS

As it is located at center of Indian peninsula far from the Bay of Bengal and the Arabian Sea,

Gadchiroli has a tropical wet and dry climate with dry conditions prevailing for most of the

year . It receives an annual rainfall of about 1000 mm from monsoon rains dur ing June to

September. Summers are extremely hot last ing from March to June, with maximum

temperatures occurr ing in May.

Table No. 7: Climate condition of Gadchiroli District

7 REQUIREMENTS OF PROJECT

7.1 Crop Water Requirement

The crop water requirement for Kotgal LIS crop pattern is 6.623 Mm3/ 1000 ha while the crop

water requirement for other crop pattern is 8.245 Mm3/ 1000 ha and for Gogaon LIS it is 10.77

Mm3/ 1000 ha as per modified Penman method.

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7.2 Power Requirement

Total Power requirement for proposed scheme is estimated as 1.0 MVA and the same shall be

sourced from MSEDCL.

7.3 Manpower Power Requirement

Different category of manpower required is as follows:

Machinery operator & dr iver

Fitters & machinery for repair

Masons

Unskilled Labors Majdoors

Required manpower shall be sourced from Local area dur ing construction phase. They will be

preferred for jobs based on their educational qualification, exper ience and capabilit ies dur ing

construction phase.

8 CONSTRUCTION PROGRAMME & PLANNING

Construction shall be star ted after gett ing Environmental clearance from SEAC & MWRRA

clearance the construction activit ies will be star ted.

9 RESETTLEMENT & REHABILITATION

Total 1819.36 ha of area within River bank & nearby low line areas will be submergence

including 379.96 Ha of pr ivate land and 56.86 ha. of forest land. Resett lement and

Rehabilitat ion shall be done as per applicable State and Central Acts and Guidelines. Total

56.86 ha of forest will be submergence. Proposal for seeking pr ior approval of Central

Government under the Forest (Conservation) Act 1980 has been submitted on 5 th June, 2017.

10 PROJECT COST ESTIMATES

The total cost of the scheme is worked out to be Rs. 365.71 Cr. Inclusive of Direct and indir ect

Charges.

11 B.C. RATIO

Consider ing the total cost of the barrage along with annual costs of lift ir r igation schemes and

revenue through crops proposed under var ious lift ir r igation schemes and virgin command and

revenue due to domestic and industr ial water supply, fisher ies development and development

of animal husbandry, the benefit cost ratio is worked out as 2:27. It satisfies the cr iter ia laid

down for feasibil ity of medium and minor projects.

PRE-FEASIBILITY

REPORT




12 ANALYSIS OF PROPOSAL (FINAL RECOMMENDATIONS)

Benefit Cost Ratio of the scheme worked up to be 2:27. It is satisfies the cr iter ia laid down

for feasibility of medium and minor projects.

The scheme is considered to improve Socio-economic condit ion of the people by providing

ir r igation.

People under command area mainly backward due to lack of ir r igation assurance. To br ing

them in flow of national development, the scheme is recommended for approval.

It is expected that the construction of the project would take about four years. However, the

ir r igation will star t immediately after the completion of the project. On completion of the

project, the un-ir r igated land will have assured water supply and thus the project will br ing

the prosper ity to the population under the command. The food productions with the new

high yields var ieties of crops will r ise and the cult ivators will have good financial return in

the course of time.

Project shall create direct & indirect employment opportunit ies to the people residing at

surrounding region. Different types of people will be recruited for proposed unit based on

the basic qualification as skilled, unskilled or semiskilled. As the project needs good amount

of workforce of non-technical and technical nature, they are being made available from the

nearby villages. Migration of highly education and skil led exper ience people will result in

increase of literacy in the sur rounding vil lages. Project will also enhance the prospects of

employment to the nearby people.

Documents

(Chandrapur Irrigation Project Circle, Chandrapur)environmentclearance.nic.in/writereaddata/FormB/TOR/PFR/27_Jul... · 7 Cross Section of Barrage 15 8 L Section of Barrage 16 LIST