Although Tahoe is a naturally-occurring body of water, a small dam (109 ft/33.2 m wide by 18 ft/5.5 m high)
controlling the top 6.1 ft/1.86 m of the lake's water level was constructed in 1913. The gates of the dam
regulate the flow of water into the Truckee River, the lake's only outlet. This early in the summer, just enough
water to keep the river flowing is being released. In a few weeks, when the rafting and inner-tubing traffic
picks up, additional gates will be opened to raise the water level for a more exciting ride down the river. . . .