Diablo Reservoir Near Newhalem

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1,201 ft

Water lake or reservoir water surface elevation above ngvd 1929, ft levels at Diablo Reservoir Near Newhalem are currently 1,201 ft, about 100% of normal. The average for this time of year is approximately 1,201.74ft. Maximum recorded Lake or reservoir water surface elevation above NGVD 1929, ft since record keeping began in 2007 was 2009-11-21 when levels reached 1,204.8 ft. Lowest recorded Lake or reservoir water surface elevation above NGVD 1929, ft was 2017-09-11 when levels receded to 1,193.5 ft. View historical levels.

Diablo Reservoir is a man-made lake located near Newhalem, WA in the North Cascades. The reservoir was created in 1930 to generate hydroelectric power for the city of Seattle. The hydrology of the lake is heavily influenced by the Skagit River, which feeds into the lake. Specific surface flow comes from the Skagit River, as well as several smaller creeks and streams in the area. The reservoir is also a major provider of snowpack, which is critical for maintaining water levels during the dry summer months. The water from Diablo Reservoir is primarily used for hydroelectric power generation, but it also supports local agriculture and recreational activities such as fishing, boating, and camping. The surrounding wilderness is home to a variety of wildlife, including bears, mountain goats, and bald eagles.