Winnemucca Lake, just east of Pyramid Lake in the northwestern portion of the U.S. state of Nevada is on the dividing line between Washoe County and Pershing County counties.[1]
The lake was formerly a shallow tule-filled lake and an important stop for migrating waterfowl. After the Derby Dam was built on the Truckee River in 1903 (the first project of the Reclamation Act), and State Route 447 (which blocked the slough connecting it to Pyramid Lake) was built, Winnemucca Lake dried out and has remained dry since the late 1930s.