Geist ReservoirWater Level & Temperature
Geist Reservoir water level & water temperature
Geist Reservoir water level is updated continuously from USGS gauge 03351700 (NAVD88). Full pool elevation is 785 ft. Live reading, 7-day trend, and multi-year history appear below as the data loads.
Geist Reservoir water temperature by month
Geist 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
39°
Mar
45°
Apr
58°
May
69°
Jun
78°
Jul
82°
Aug
80°
Sep
74°
Oct
61°
Nov
48°
Dec
39°
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.