Definition:
A reservoir is a natural or artificial body of water that collects, stores, and releases water for various purposes, such as water supply, irrigation, flood control, and hydropower generation.
Types:
- Natural reservoirs: Formed by natural processes, such as lakes, rivers, and underground aquifers.
- Artificial reservoirs: Created by constructing dams or other barriers to impound water, forming a lake or pond.
Functions:
- Water storage: Reservoirs store water during periods of excess rainfall or snowmelt, releasing it during periods of scarcity.
- Water supply: Reservoirs provide a reliable source of water for drinking, sanitation, industry, and agriculture.
- Irrigation: Reservoirs supply water for irrigating crops and supporting agricultural activities.
- Flood control: Reservoirs control flooding by storing excess water and releasing it gradually, preventing downstream flooding.
- Hydropower generation: Dams built across rivers and reservoirs create a height difference that can be used to generate electricity.
- Recreation: Reservoirs provide opportunities for recreation, such as fishing, boating, swimming, and camping.
Characteristics:
- Capacity: The volume of water the reservoir can hold.
- Surface area: The area covered by the reservoir when full.
- Depth: The maximum depth of the reservoir.
- Inflow: The amount of water entering the reservoir.
- Outflow: The amount of water leaving the reservoir.
Management:
Reservoirs require careful management to ensure their efficient and sustainable use. This includes monitoring water levels, controlling inflows and outflows, and maintaining water quality.
Importance:
Reservoirs play a crucial role in water resource management, providing essential services for human society and the environment. They ensure a reliable water supply, protect against floods, generate renewable energy, and support biodiversity.