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Water level, also known as gauge height or stage, is the elevation of the free surface of a sea, stream, lake or reservoir relative to a specified vertical datum. [1]
Most modern reservoirs have a specially designed draw-off tower that can discharge water from the reservoir at different levels, both to access water as the water level falls, and to allow water of a specific quality to be discharged into the downstream river as "compensation water": the operators of many upland or in-river reservoirs have ...
During droughts or water shortages, the water level can drop below full summer pool. Additionally, water levels may be lowered during the winter season below full summer pool to accommodate snowmelt or seasonally heavy rains. During periods of heavy rain, the water level in the reservoir may rise above full summer pool to prevent flooding ...
For example, a small dam, two hydroelectric plants, and locks on the outlet of Lake Superior make it possible to artificially control the lake level. Certainly, the great majority of the lake is natural. However, the control of water that can be held in reserve means a portion of the vast lake functions as a reservoir.
This is a list of the largest reservoirs, or man-made lakes, in the U.S. state of California. All fifty-three reservoirs that contain over 100,000 acre-feet (0.12 km 3) of water at maximum capacity are listed. This includes those formed by raising the level of natural lakes, such as at Lake Tahoe.
In the wake of the atmospheric rivers that have brought an onslaught of rain, wind and snow to California over the last few weeks, short-term drought conditions and reservoir levels have improved ...
The slope of the water table is known as the “hydraulic gradient”, which depends on the rate at which water is added to and removed from the aquifer and the permeability of the material. The water table does not always mimic the topography due to variations in the underlying geological structure (e.g., folded, faulted, fractured bedrock).
Reservoir levels Oradell, Woodcliff Lake, Lake Tappan : The three reservoirs on the Hackensack River operated by Veolia are at 58% capacity. Normally at this time of year they are at 61% capacity.