Topaz Lake, Reservoir at California-Nevada border, United States.
Topaz Lake is a reservoir straddling the California-Nevada border in the Sierra Nevada region. The body of water holds water diverted from the West Walker River and serves as a storage facility for irrigation purposes.
The original dam project began in the early 1920s to capture water for agricultural irrigation in the region. A major reinforcement of the structure took place in the mid-1930s, significantly increasing the water storage capacity.
The lake holds significance as part of Jedediah Smith's first journey across the Sierra Nevada in 1827 during early American exploration.
The lake is open year-round for fishing, with regular stocking programs managed by wildlife departments from both states. Visitors should check local regulations and access conditions, as these may vary by season or during maintenance periods.
The reservoir was created by diverting the West Walker River into a basin that previously held a smaller natural lake. This merger of engineered waterway and existing lake formed an unusual water body that blends two different water sources.
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