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The U.S. Bureau of Reclamation, which owns the dam, said it expects Lake Powell to potentially dip two to three feet into the "buffer zone" in March. ... Last August, low water levels and closed ...
In 2013, the Bureau of Reclamation proposed raising the BF Sisk Dam by 20 feet (6.1 m) to create about 130,000 acre-feet (160,000,000 m 3) of extra storage capacity. An expanded reservoir could store more water in wet years to compensate for less water being pumped in dry years due to environmental restrictions.
The Bureau of Reclamation estimated the additional water yield per year as 335,000 acre-feet (0.413 km 3) but the actual yield has been closer to 200,000 acre-feet (0.25 km 3). As a result, the reservoir is often at a low water level because in most years demand is greater than supply.
Other highstands occurred in 1994 and 1995. Most of the photographs showing a full lake are from that relatively wet period. Drought has persisted since then, and as of February 2022, water levels have never recovered. [6] [7] The former administration building of the Bureau of Reclamation still stands as a bed and breakfast facility.
However, low water levels in the lake have caused recreational usage in Wyoming to drop more than 60%. In an attempt to reduce tensions between the two states Reclamation has agreed to keep the lake at a higher level while maintaining at least 1,500 cubic feet per second (42 m 3 /s) of flow below the dam. [2] [16] [18]
Normal conservation water levels are much lower, at 81,443 acre-feet (0.100458 km 3). [2] Regular water discharges pass through an outlet works with a capacity of 600 cu ft/s (17 m 3 /s), while flood flows are released through two spillways: a morning glory inlet with a capacity of 5,700 cu ft/s (160 m 3 /s), and an emergency overflow channel ...
The dam is located in Tahoe City and serves as the main storage facility for the U.S. Bureau of Reclamation's Newlands Project that also includes the Lahontan Dam and two diversion dams, providing irrigation water for 55,000 acres (22,000 ha) of cropland mainly in the Lahontan Valley of western Nevada. [2]
The Bureau of Reclamation, formerly the United States Reclamation Service, is a federal agency under the U.S. Department of the Interior, which oversees water resource management, specifically as it applies to the oversight and operation of the diversion, delivery, and storage projects that it has built throughout the western United States for irrigation, water supply, and attendant ...