Definition
Keddara Dam is a concrete gravity dam situated on the Boumerdès River (also called the Isser River) near the town of Keddara in northern Algeria. It primarily serves as a water supply reservoir for the Algiers metropolitan area and provides flood control, irrigation, and hydroelectric power generation.
Overview
Construction of the Keddara Dam began in 2001 and was completed in 2008. The dam was built as part of Algeria’s national strategy to improve water resource management and to meet the growing demand for potable water in the capital region. Operated by the Algerian Ministry of Water Resources, the dam plays a crucial role in securing a reliable water supply for millions of inhabitants and in mitigating seasonal flooding downstream.
Etymology/Origin
The name “Keddara” derives from the nearby town of Keddara, which itself traces its origins to the Arabic word “qaddarah” (قَدَّارة) meaning “capacity” or “ability,” possibly referencing the area's historical role as a water collection point. The term has been adopted for the dam as it is the most prominent hydraulic structure in the vicinity.
Characteristics
- Type: Concrete gravity dam
- Height: Approximately 108 meters (354 feet)
- Length: About 560 meters (1,837 feet) across the river valley
- Reservoir Capacity: Roughly 350 million cubic meters (MCM) of water storage
- Catchment Area: Approximately 1,250 km² (483 mi²) feeding into the reservoir
- Purpose: Municipal water supply, flood control, irrigation, and hydroelectric generation (installed capacity of around 6 MW)
- Spillway: Controlled overflow spillway equipped with radial gates to regulate water release during high inflow events
- Construction Materials: High-strength concrete and reinforced steel, designed to withstand seismic activity common in the region
- Environmental Measures: The project incorporated fish ladders and reforestation programs to mitigate ecological impact, though some concerns regarding downstream flow alteration remain.
Related Topics
- Algerian Water Infrastructure: Overview of dams, reservoirs, and water treatment facilities across Algeria.
- Hydroelectric Power in North Africa: Role of small- to medium-sized hydro plants in regional energy mixes.
- Gravity Dams: Engineering principles, design considerations, and notable examples worldwide.
- Water Management in Algiers: Strategies for urban water supply, demand forecasting, and sustainability.
- Boumerdès Province Geography: Physical geography, climate, and river systems influencing dam placement.