Keystone LakeWater Level & Temperature
Keystone Lake water level & water temperature
Keystone Lake water level is updated continuously from the operating agency. Full pool elevation is 723 ft. Live reading, 7-day trend, and multi-year history appear below as the data loads.
Keystone Lake water temperature by month
Keystone Lake surface water temperature averages from about 42°F in January to 87°F in July over the year, based on a 40-year USGS model (1980–2020). Cold-water caution applies in January, February, March, November and December, when the typical temperature is below 60°F.
Jan
42°
Feb
45°
Mar
55°
Apr
64°
May
73°
Jun
81°
Jul
87°
Aug
86°
Sep
79°
Oct
68°
Nov
56°
Dec
45°
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.