19 June 2003, Athens, Greece INTEGRATED MANAGEMENT THE RIVER BASIN PERSPECTIVE The Jucar River Basin - First results Teodoro Estrela Júcar PRB Coordinator

Location of Júcar River Basin

Area (km 2 ) Population (inhabitants) Irrigated Land (ha) Equivalent Population due to Tourism (inhabitants) Water Resources (hm 3 /year) Water Demand (hm 3 /year) Main figures of Júcar River Basin

Reservoirs Alarcón Tous Storage capacity = millions m 3 Arquillo de San Blas Ulldecona

Channels Acequia Real del Júcar Canal Júcar-Turia

Mean annual rainfall (mm) Mean annual potential evapotranspiración (mm/year)

JÚCAR PRB FIRST RESULTS

Adaptation of Jucar River Basin Hydrologic Information System to WFD requirements Adaptation of monitoring networks to WFD requirements Characterization of surface water bodies Characterization of groundwater bodies Economic Analysis Analysis of pressures and impacts Main activities

Adaptation of Jucar River Basin Hydrologic Information System to WFD requirements

Adaptation of monitoring networks to WFD requirements

Improvements on groundwater water level monitoring network Existing monitoring sites (160) New monitoring sites (129) Aquifers

Improvements on groundwater water quality monitoring network Existing monitoring sites (127) New monitoring sites (25) Aquifers

Biological monitoring network 254 points In operation from 1999

Biological Quality elements Macro invertebrates Fishes Diatomeas Macrophytes Hydromorphological quality elements Hydrological regime Flow velocities Structure and substrate of the river bed Structure and condition of riparian zones Physic-Chemical quality elements Temperature Oxigenation Salinity Acidification Status COD BOD5 Phosphate Potassium Chloride Sulphate Calcium Magnesium Sodium Silica Monitoring network biological indicators

Ecological status classification: Macro invertebrates Index (BWMP’) at Jucar river

Characterization of surface water bodies

Júcar river at Alzira Rambla de Cervera del Mestre Rambla de la Castellana River typologies

Types of river reaches Identification of type of river reach (field work by river police)

Digital terrain model (100 m x 100 m) Delineation of surface water bodies: rivers Drainage network with basins > 100 l /s and drainage area > 10 km2

Surface water bodies Rivers Coastal waters Reservoirs

Characterization of groundwater bodies

Aquifers Shared aquifers (Segura) Shared aquifer (Tajo and Ebro)

Preliminary estimation of available groundwater resource

Differences between resources and abstractions in Júcar River Basin aquifers (year 2000)

RESOURCE AVAILABLE RESOURCE Environmental restrictions Environmental Restrictions : Ecological discharges, groundwater outflows to the sea Rate of overall recharge of the body of groundwater less the long term annual rate of flow required to achieve the ecological quality objectives WFD introduces the concept of available groundwater resource

Environmental minimum flows associated to each aquifer

Differences between resources and abstractions (year 2000) Differences between available resources and abstractions (year 2000) Comparison between resources and abstractions

Economic Analysis

Available resources for water supply: River Basin Authority. Water use fee (for canals) Water regulation canon (for reservoirs) Water distribution: Municipalities and User Communities. Sewage and water treatment: Autonomous Government. Control of discharges: River Basin Authority Charges and Fees

Main river basin hydraulic infrastructures (cost recovery)

Canon for water regulation (Benageber and Loriguilla Reservoirs) Hydropower stations

Main users of Benegeber and Loriguilla reservoirs

Non recovery due to Flood Regulation is approximately 33%. Recovery of regulation canon for Benageber and Loriguilla reservoirs

Analysis of pressures and impacts for surface water and groundwater bodies

Morphological alterations Identification of small dams (field work by river keepers) Validation at Water Planning Office (use of ortophotos) Incorporation to GIS

X,Y= , X,Y= , Morphological alterations Validation of small dams and river channelling

Accumulated Irrigated area (has) Digital terrain model (100 m x 100 m) Irrigated surface Accumulated irrigated surface

Discharge points and urban areas Valencia Urban Area

Web Page

Web Page Jucar River Basin http : //