HAMMAMET CASE STUDY PROGRESS

September 2004September 2004

RealizationRealization of an Hydrogeologic Information of an Hydrogeologic Information System of Nabeul-Hammamet regionSystem of Nabeul-Hammamet region

CONTENTSCONTENTS

•OBJECTIVES

• CONCLUSION

•PRODUCTS / REALIZATION

•HYDROGEOLOGIC INFORMATION SYSTEM

OBJECTIVES OBJECTIVES

Realization of a geographic database : 33 vector layers3 raster data

Realization of an environmental database

Realization of a socio-economic database in order to understand the social behaviour (SUMER)

Realization of an hydrogeologic, hydrologic and hydrodynamic database in order to determine the:

Input of WaterWareInput of WaterWare

Input of TelemacInput of Telemac

Hydrological characteristics Hydrogeological characteristics Hydrodynamic characteristics

Primary data Collection

Bibliography Satellite mapMap (topo,soil…) Hydrogeologic data Socio-economic data Meteorological data

Analysis and data Processing

Geographic Information Conception

WaterWare

METHODOLOGY METHODOLOGY

Telemac Despite the availability of many data, their integration is lacking via the WEB

PRODUCTS / REPRODUCTS / REALIZATIONALIZATION

Corine land cover

BIBLIOGRAPHY

FIELD WORK

Analysis and synthesis

Data collection and validation

•Aerial photos 2000 •Spot image 1988

Technical report

GEOGRAPHIC DATABASE

Raster DATA:

THEMATIC MAP:•Soil map•Marine map•Topographic map•Geologic map

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

Landuse map

Water use:AgricultureDomesticTouristic In

crea

se

Catchment areas :

Nodes:

Aquifer:

12 catchment areas Dense Drainage network Lithology: mudstone

Area = 133Km²

Lithology = plio-quaternary

State = overexploitated

Groundwater storage = 25MCM / year

Exploitation = 18MCM / year

Number of assessed wells = 1544 wells

Demography: Population: 68740 inhabitants Density: 208 inhabitants/km²

8 mountain dams 6 mountain lakes 1544 wells

HYDROGEOLOGIC DATABASEHYDROGEOLOGIC DATABASE

Legend

50-100m

200-250m

250-300m

300-350

100-150m

150-200m

400-450m

350-400

0-50m

Limite du BV

Drainage

Digital Elevation Model of the drainage basin of Sidi Khlas

Hydrologic study of the catchment areas

Catchment geometry

Catchment relief

Drainage network

Water debit in the catchments

Water nodes 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 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 dataEasy access to the dataOutput and input data in Real-Time

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…

LAND USE CHANGELAND USE CHANGE

THE METHODOLOGY OF THE THE METHODOLOGY OF THE CARTOGRAPHIC EDITION LAND USE MAPCARTOGRAPHIC EDITION LAND USE MAP

Spot XS

Agricultural environment Natural environmentArtificial environment

Arable land Permanent cropsHeterogeneous agricultural

Urban areaIndustrial and commercial areaDump and mineArtificial and non agriculture areaInland waters

ForestBeach SebkhaReservoirPastural

Photo-interprtation & textural treatment

LAND USE MAP

Aerial photo

Corine land cover classification

Land use map (1988) Land use map (2000)

CodeLevelArea 88 (m²) Area 2000

(m²) % area 88 % area 2000

Etat 88

Etat 2000

Artificial

environ

men

t

11Urban fabric6554076,259544683,472,313,42

3,55

6,66

12Industrial, commercial and

transport units3272792,538812707,911,153,16

13Mine, dump and constrution

sites264909,22215684,120,090,08

Agricu

ltural

environ

men

tal

21Arable land58796877,5767885626,6820,7024,35

67,28

61,41

22 crops Permanent123473281,7599135230,2643,4635,55

24Heterogeneous agricultural

areas8865746,204209495,873,121,51

Natu

ral environ

men

tal

31Forest61807266,6958975858,9121,7621,15

27,46

29,87

32Shrubs and/or herbacus vegetation associations

14526685,5921876145,285,117,85

33Open spaces with little or no

vegetation1661072,452438902,350,580,87

51Inland waters717958,043782161,660,251,361,71

2,06

52Marine waters4136225,041966931,051,460,71

Total284076891,35278843427,56100,00100,00

STATISTICAL LAND USE CHANGESTATISTICAL LAND USE CHANGE

The areas land use map's changes

2,73

0,29

1,10

-0,75

1,12

2,01

-0,02

3,65

-7,91

-1,61

-0,61

-10,00

-8,00

-6,00

-4,00

-2,00

0,00

2,00

4,00

6,00

Var

iab

le in

dex

Urban fabric

Industrial, commercial andtransport units

Mine, dump and constructionsites

Arable land

Permanent crops

Heterogeneous agriculturalareas

Forest

Shrubs and/or herbaceousvegetation associations

Open spaces with little or novegetation

Inland waters

Marine waters

WaterWare nodes chart

wellwelltouristic areatouristic arealocalitylocalitystudy areastudy area

damdamgettar areagettar arealackeslackesirrigated areairrigated area

legend

MAIN IDEA OF THE HYDROGEOLOGIC INFORMATION SYSTEM

Hydrogeologic Information System Hydrogeologic Information System

Hydrologic data Hydrogeologic data Environmental data Meteorological data

Characteristics of the catchments area

Management of the catchments area

Management of the regions

Determination of the hydrologic characteristics

Calculate the inflow Water in each Catchment

Characteristics of 1544Well

Dam and lacke characteristics

Climat data: Temperature Rainfall Wind Evaporation

Oceanographic data: Swell Tidal Wave

Treatment station plant Generality of STEP Affluents STEP Effluents STEP

Hazardous substances

Hydrogeologic characteristics of the water table

SOCIO-ECONOMIC DATABASESOCIO-ECONOMIC DATABASE

Nom de l’indicateurUnité Valeur

Population Growth Rate %o /year 2,3

Migratory Rate%o/year 3,1

Population Density Number of People / km2 208

Crude Death Rate%o/year 5,5

Crude Birth Date %o/year 16,9

Life Expectancy at Birth years 72,9

Growth of G.D.P. % 1,3

Activity Rate % 48,2

Agri. Income Distr. by the Main Types of Produc. MILLION EURO 2086

Inds. Income Distr. by the Main Types of Produc. MILLION EURO4826

Percentage of Tertiary Employment % 39

Tourism Income Contribution to the Reg. Product MILLION EURO 1100

Water Price for the Domestic Use EURO/M3 0,273

Water Price for the Agriculture UseEURO/M3 0,041

Water Price for the Industry EURO/M3 0,506

Water Price for the Tourism Units EURO 0,506

Water Treatment Investments MILLION EURO 9

Reservoir Storage Investments MILLION EURO 8

Water Distribution and Use Systems Investments MILLION EURO 230

Water Consumption per capita liters/day 110

Domestic Water Consumption per capita liters/day 100

Commercial Water Consumption per capita liters/day 80

Agricultural Water Consumption per capita liters/day 820

Industrial Water Consumption per capita liters/day 417

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)

INTEREST OF THE HYDROGEOLOGIC INFORMATION SYSTEM

Possibility of generalization of this system to the whole Tunisia

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

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

SUMMARYSUMMARY

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 technical report

Hydrological technical report

Determination of the inputs user in WaterWare

Realized works:

THANK YOU FOR YOUR ATTENTION!