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In sharp contrast, the period between 14,300 and 11,100 years ago, which includes the Younger Dryas interval, was an interval of reduced sea level rise at about 6.0–9.9 mm/yr. Meltwater pulse 1C was centered at 8,000 years ago and produced a rise of 6.5 m in less than 140 years, such that sea levels 5000 years ago were around 3m lower than ...
Water level elevation in the lake is maintained at a maximum of 280 feet (85 m) above sea level, 35 feet (11 m) lower than the dam's maximum of 315 feet (96 m) spillway to ensure safe operations. [3] The lake level can fluctuate significantly, depending upon the amount of runoff received from the San Dieguito River drainage basin. [ 4 ]
Although the peak of the flood lasted a few weeks at most, erosion at Red Rock Pass continued for a few years before water ceased to spill over. The flood drained the top 351 feet (107 m) of Lake Bonneville, which constituted about 1,200 cubic miles (5,000 km 3 ) of water, and lowered the lake level to a stage known as the Provo shoreline.
Because of the link through the Straits, Lakes Michigan and Huron have the same mean water level (in June 2015 it was 580 feet (177 m)). [ 13 ] The largest inflow to the system is the St. Mary's River from Lake Superior , and the main outflow is the St. Clair River toward Lake Erie ; both lie in the Lake Huron basin.
After it was built, the reservoir filled gradually. Because of irrigation needs, the water level at the lake sometimes is low enough to kill its self-sustaining fish, but during wet years, the water can overtop Coolidge Dam. Since construction of the dam, the lake has been nearly empty at least 20 times, and has been full only three times. [1]
For most of the year, the 92-foot (28 m)-high dam and its reservoir lie empty, but can hold more than 45,000 acre-feet (56,000,000 m 3) of water during major storms. During the dry season, the basin behind the dam is used for groundwater recharge , as well as various recreational activities.
The winter months are a crucial time of year for California's water supply. It is the state's wet season, the time to stockpile water for the drier months that run from the spring into the fall.
Aerial view of Lake McConaughy from the south. The lake, formed by Kingsley Dam, is a man-made body of water that is 22 miles (35 km) long, 4 miles (6.4 km) wide at its largest point, and 142 feet (43 m) deep near the dam (at full capacity) – it was constructed between 1936 and 1941 and is fed by the North Platte River. [2]