Drawdown
Water
Lowering of a reservoir's water level; process of depleting a reservoir or ground water storage. The drop in the water table or level of water in the ground when water is being pumped from a well. Vertical distance the free water surface elevation is lowered or the reduction of the pressure head due to the removal of free water. The difference between a water level and a lower water level in a reservoir within a particular time. The amount of water used from a reservoir.
The lowering of a reservoir's water surface elevation due to release of water.
- — Dam Safety - Glossary of Terms retrieved 2014-06-01
The lowering of the surface elevation of a body of water, the water surface of a well, the water table, or the piezometric surface adjacent to the well, resulting from the withdrawal of water therefrom.
- — Service Hydrologist Reference Manual Glossary of Hydrologic Terms retrieved 2014-06-01
Fishing
Lowering a lake level for a specific purpose.
Science› Energy› Renewable Energy
Solar Energy
Lowering of a reservoir's water level; process of depleting reservoir or groundwater storage.
- — Solar Energy Development PEIS Glossary retrieved 2014-06-15
Weather
In hydrologic terms, the lowering of the surface elevation of a body of water, the water surface of a well, the water table, or the piezometric surface adjacent to the well, resulting from the withdrawl of water therefrom.