HAMMAMET CASE STUDY PROGRESS

1. HAMMAMET CASE STUDY PROGRESS Realization of an Hydrogeologic Information System of Nabeul-Hammamet region September 2004

2. CONTENTS • OBJECTIVES • PRODUCTS / REALIZATION • HYDROGEOLOGIC INFORMATIONSYSTEM • CONCLUSION

3. OBJECTIVES • Realization of a geographic database : • 33 vector layers • 3 raster data • Realization of an hydrogeologic, hydrologic and hydrodynamic database • in order to determine the: • Hydrological characteristics • Hydrogeological characteristics • Hydrodynamic characteristics Input of WaterWare Input of Telemac • Realization of an environmental database • Realization of a socio-economic database in order to understand the social behaviour (SUMER)

4. METHODOLOGY Primary data Collection Satellite map Map (topo,soil…) Meteorological data Bibliography Socio-economic data Hydrogeologic data Analysis and data Processing Geographic Information Conception WaterWare Telemac Despite the availability of many data, their integration is lacking via the WEB

5. PRODUCTS / REALIZATION

6. GEOGRAPHIC DATABASE Corine land cover • Aerial photos 2000 • Spot image 1988 Landuse map Raster DATA: • Soil map • Marine map • Topographicmap • Geologic map • Soil Type • Bathymetry • Contour line, road network • Railway, bench mark… • Lithology, tectonic THEMATIC MAP: Analysis and synthesis BIBLIOGRAPHY Technical report Data collection and validation FIELD WORK

7. Water use: • Agriculture • Domestic • Touristic Increase HYDROGEOLOGIC DATABASE • 12 catchment areas • Dense Drainage network • Lithology: mudstone Catchment areas: Demography: • Population: 68740 inhabitants • Density: 208 inhabitants/km² • 8 mountain dams • 6 mountain lakes • 1544 wells Nodes: • Area = 133Km² • Lithology = plio-quaternary • State = overexploitated • Groundwater storage = 25MCM / year • Exploitation = 18MCM / year • Number of assessed wells = 1544 wells Aquifer:

8. Legend 400-450m 350-400 300-350 250-300m 200-250m 150-200m 100-150m 50-100m 0-50m Limite du BV Drainage Hydrologic study of the catchment areas Catchment geometry Catchment relief Drainage network Water debit in the catchments Digital Elevation Model of the drainage basin of Sidi Khlas

9. Water nodes • Collection of 1544 wells built in the Hammamet region: complete information is available concerning: wells depth, diameter, usage, exploitation, equipment, standing water level, dry residue… • 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 phreatic water table • 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… Hydrogeologic database • Storage of the data • Easy access to the data • Output and input data in Real-Time

10. LAND USE CHANGE

11. Aerial photo Spot XS Photo-interprtation & textural treatment Corine land cover classification Agricultural environment Artificial environment Natural environment Forest Beach Sebkha Reservoir Pastural Urban area Industrial and commercial area Dump and mine Artificial and non agriculture area Inland waters Arable land Permanent crops Heterogeneous agricultural LAND USE MAP THE METHODOLOGY OF THE CARTOGRAPHIC EDITION LAND USE MAP

12. Land use map (1988) Land use map (2000)

13. STATISTICAL LAND USE CHANGE

15. well touristic area locality study area dam gettar area lackes irrigated area WaterWare nodes chart legend

16. MAIN IDEA OF THE HYDROGEOLOGIC INFORMATION SYSTEM Hydrogeologic Information System Hydrologic data Hydrogeologic data Environmental data Meteorological data • Characteristics of the catchments area • Characteristics of 1544 Well • Treatment station plant Generality of STEP Affluents STEP Effluents STEP • Climat data: Temperature Rainfall Wind Evaporation • Management of the catchments area • Hydrogeologic characteristics of the water table • Management of the regions • Oceanographic data: Swell Tidal Wave • Determination of the hydrologic characteristics • Hazardous substances • Dam and lacke characteristics • Calculate the inflow Water in each Catchment

25. SOCIO-ECONOMIC DATABASE

27. Extension of the Hydrogeologic Information System • Use of a powerful Data Base System Management (Access is limited about storage capacity and data security) • Integration of a statistic module for designing graphs using some of the data base’s stored Decision Support System (DSS)

28. INTEREST OF THE HYDROGEOLOGIC INFORMATION SYSTEM • A Data Bank with a maximum of data about region’s feature (hydrological, hydrogeological, environmental, socioeconomic, 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 • We can manage a SHP files without using ArcView • Simulation of water inflow in the catchment • Conception allowing making additions of new frames and modules • Update will be very easy since data will be centralized • Possibility of generalization of this system to the whole Tunisia

29. SUMMARY Realized works: • Geographic database: • 33 layers SHP and 3 raster data • Land use map • Iso-salinity, iso-piezometric and iso-depth map • Hydrogeological database: • Information about 1544 wells (depht, standing water level, salinity,…) • Information about the water table (phreatic and profond) • Information about nodes: • Lake, dam… • Observation well, bore hole… • Socio-economic database: socio-economic dynamic (population, migration, demography increases…) • Vectors layers and raster data technicalreport • Hydrological technical report • Determination of the inputs user in WaterWare

30. THANK YOU FOR YOUR ATTENTION!