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OPTIMA PROJECT

Third Management Board Meeting, Gumpoldskirchen, Austria, May 18/20,

2006Tunisia case study

By

Ahmed EZZINE

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METHODOLOGY

CONCLUSION

PRODUCTS / REALIZATION

WATERWARE MODELS (RRM & WRM)

Table of Contents

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METHODOLOGY

Primary data Collection

Analysis and data Processing

Geographic Information Conception

WaterWare system

Bibliography Satellite map,maps (topo,soil…)

Hydrogeologic dataSocio-economic dataMeteorological data

IMPLEMENTATIONOF RRM & WRM

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Case Study

Water useDomesticIndustryAgriculture

Incre

as

e

Melian basin

Area = 553Km²Population = 481 960 inhabitants 4 subcatchments Dense Drainage network

Aquifer

Lithology = plio-quaternary Groundwater storage = 27.31 MCM/ year Exploitation = 28.1 MCM / year Nbre of Bore hole = 494State = overexploitated

Noeuds

Barrages: El H’ma 26 mountains lakes 2500 wells

Case study: Melian basin, TUNISIA

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Input of WaterWare

2 land use maps

PRODUCTS / REALIZATION

A geographic database

40 vector layers

6 raster data

Hydrogeologic, Hydrologic and Climatologic database in order to determine the:

Hydrological characteristics

Hydrogeological characteristics

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Geographic database

Thematic map

•Soil map•Hydrographic map•Topographic map•Geologic map

•Soil Type •Contour line, road network•Railway, bench mark…•Lithology, tectonic

Corine land cover•Aerial photos 2000 •Spot image 1988

Land use map Landuse map(1988 & 2000)

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Hydrologic study of the catchment areas

622-700m545-622m467-545m389-467m311-389m

155-233m233-311m

77-155m0-77m

Hydrography

Elevation

Digital Elevation Model of the drainage basin of Melian

Catchment geometry

Catchment relief

Drainage network

Water inflow in the catchments

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The methodology of the cartographic edition Land Use map

Natural areas

Arable landPermanent crops

PasturesHeterogeneous

agricultural

Spot XS

Agricultural areas environment

Artificial Surface

environment

Urban fabricIndustrial, commercial

areaDump and mine

ForestWater bodies

Photo-interpretation and classification

LAND USE MAP

Aerial photography

Corine land cover legend

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Land use map (1988)

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Land use map (2000)

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No change

Change

Land Use Change

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Statistical Land Use Change

Classesarea1988(m²) area2000(m²)

LUC /total (%)

Artificial Surface 24341863 49773906 4,60

Agricultural Area 443249606 389291651 -9,76

Forest and Semi-natural area 75481979 98522800 4,17

Water Bodies 9838978 15252411 0,98

Classes Code1988 2000 1988 2000

area(m²) area(m²) % area % area

Artificial Surface

11: Urban fabric 21293116 23422292 3,79 4,12

12: Industrial, commercial and transport units

999699 20937925 0,18 3,68

13: Mine, dump and construction sites

2049048 5413689 0,37 0,95

Agricultural Area

21: Arable land 510320 13155173 0,09 2,31

22: Permanent crops43599993

236413474

677,7 64,07

23: Pastures 0 3114568 0 0,55

24: Heterogeneous agricultural areas

6739353 8887165 1,2 1,56

Forest and natural area

31: Forest 42495422 41423570 7,57 7,29

32: Herbaceous vegetation association

32890461 56813002 5,86 10

33: Open spaces with little or no vegetation

96096 286228 0,02 0,05

Water Bodies51: Inland waters 8033936 14797447 1,43 2,6

52: Marine waters 1805042 454963 0,32 0,08

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Index of Areas changes

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Hydrogeologic Information System(HIS)

Hydrogeologic Information System

Hydrologic data Hydrogeologic data Environmental data Meteorological data

Management of the catchments area

Management of the regions

Determination of the hydrologic characteristics

Calculate the inflow Water in each Catchment

Characteristics of 2460Well

Dams and lakes characteristics

Climat data: Temperature Rainfall Wind Evaporation

Treatment station plant Generality of STEP Affluents STEP Effluents STEP

Hydrogeologic characteristics of the Groundwater

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Hydrologic data

Hydrogeologic data

Meteorological data

Environmental data

GIS data

Main interface of the HIS

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Interest of the Hydrogeologic Information System

A Data Bank with a maximum of data about region’s feature (hydrological, hydrogeological, environmental, meteorological, soil, GIS data…)

Regroup and organize data in the same frame. The scatting of the hydrogeological data about the catchment area will be a hurdle behind researches

Update will be very easy since data will be centralized

Simulation of water inflow in the catchment

Conception allowing making additions of new frames and modules

We can manage a SHP files without using ArcView

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WATERWARE MODELS

(RRM & WRM)

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RAINFALL/RUNOFF MODEL(RRM)

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Implementation of RRM model

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Parameters of RRM model

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Elevation distribution (area/elevation)

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Land use distribution

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Results of RRM

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Results of RRM

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Results of RRM

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WATER RESSOURCE MANAGEMENT MODEL(WRM)

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Water nodes

Dams: name, coordinates , sector, year of construction, storage capacity, irrigated area,inflow water, name of catchment…

Collection of historic data related to observation wells in the groundwater

Mountains Lakes: name, coordinates, realization year, name of catchment, area of the catchment, storage capacity, delegation…

Observation well: name, coordinates, year, dry residue , standing water level…

Collection of 2500 wells built in the case study: complete information is available concerning: wells depth, diameter, usage, exploitation, equipment, standing water level, dry residue…

Collection of hydrologic, hydrogeologic and meteorologic data

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WaterWare nodes chart

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Melian basin

Rmel basin

Melah basin Hma basin

Hma reservoir

TP

Tourristic

Domestic

Industry

Medgerda Canal

Irrigation

Groundwater

Sea

Topologic modelDemand node

Start node

End node

Treatment nodeReservoir node

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Implementation of WRM model

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Reservoir node

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Irrigation node

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Diversion node

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Results of WRM

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Results of WRM

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Planned Work

Identification and analysis of indicators (physical & economic) and investigation of water quality related impacts

Dissemination of experience and results on the local and international scales.

Refinement and updating of GIS data baseRefinement and updating of GIS data base

Try to run the WRM model with new time series Try to run the WRM model with new time series collected from stakholders collected from stakholders

Optimisation scenarios Optimisation scenarios

WP04 Water TechnologiesWP04 Water Technologies

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CONCLUSIONS

Geographic database

40 layers SHP and 6 raster data Two Land use map (1988 & 2000) Land Use Change map

Hydrogeological database

Information about 2460 wells (depht, standing water level, salinity,…) Information about the groundwater (phreatic and profond) Information about nodes:

Lake, dam…Observation well, bore hole…

Vectors layers and raster data technical report

Hydrological technical report

Determination of the inputs user in WaterWare

Realized works:

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Implementation of RRM and WRM model

GIS data sent to NCRS

Topologic model of the basin has been identified

Establish the Stakholders database

Realized works:

Stakeholders Workshop

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THANK YOU FOR YOUR ATTENTION!