Mark Twain LakeWater Level & Temperature
Mark Twain Lake water level & water temperature
Mark Twain Lake water level is updated continuously from the operating agency. Full pool elevation is 606 ft. Live reading, 7-day trend, and multi-year history appear below as the data loads.
Mark Twain Lake water temperature by month
Mark Twain Lake surface water temperature averages from about 39°F in January to 84°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
39°
Feb
39°
Mar
45°
Apr
56°
May
68°
Jun
78°
Jul
84°
Aug
83°
Sep
77°
Oct
65°
Nov
53°
Dec
44°
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.