Lake DecaturWater Level & Temperature
Lake Decatur water level & water temperature
Lake Decatur water level is updated continuously from the operating agency. Full pool elevation is 614 ft. Live reading, 7-day trend, and multi-year history appear below as the data loads.
Lake Decatur water temperature by month
Lake Decatur surface water temperature averages from about 38°F in January to 83°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
38°
Feb
39°
Mar
46°
Apr
58°
May
70°
Jun
79°
Jul
83°
Aug
82°
Sep
75°
Oct
62 °
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.