Lake Mead is a reservoir located on the Colorado River in Nevada. It was created in the 1930s by the construction of the Hoover Dam. The lake is crucial for the hydrology of the region, supplying water to surrounding areas for agriculture and other uses. In recent years, however, the lake has experienced a decline in surface flow due to drought and overuse. Snowpack from the Rocky Mountains is a significant contributor to the lake's water supply. The lake is also used for recreational purposes, including fishing, swimming, and boating. However, the lake's water levels have been decreasing, leading to concerns about the future of these activities. The ongoing management of Lake Mead and the Colorado River is critical to the sustainability of the region's water resources.