Hoover ReservoirWater Level & Temperature
Hoover Reservoir water level & water temperature
Hoover Reservoir water level is updated continuously from USGS gauge 03228400 (NGVD29). Full pool elevation is 894 ft. Live reading, 7-day trend, and multi-year history appear below as the data loads.
Hoover Reservoir water temperature by month
Hoover Reservoir surface water temperature averages from about 37°F in January to 82°F in July over the year, based on a 40-year USGS model (1980–2020). Cold-water caution applies in roughly half the year, when the typical temperature is below 60°F.
Jan
37°
Feb
38°
Mar
42°
Apr
54°
May
66°
Jun
77°
Jul
82°
Aug
81°
Sep
75°
Oct
64°
Nov
52°
Dec
43°
Typical surface temperatures (°F), modeled historical averages (USGS 185k-lake dataset, 1980–2020). Colors flag cold-water risk: blue/amber/red = cool, caution, danger. Live and recent readings appear above where a sensor is available.