Quote Originally Posted by Grumpy View Post
Many lakes get dark even black AFTER the turnover. Nolin and several other lakes get a "pea soup" green color when they are in the process of turnover. I beg to differ about the 53 degree statement. The turnover is not tied to any specific temperature, e.g. 53 degrees. It will happen when the surface temprature gets colder than the water temperature is at the thermalcline. This summer Nolin has been very hot with the surface in the low 80s. The thermalcline has been at around 35 to 40 feet and the temp at around 75 degrees. (These figures are from the Corps of Engineers website.) Anyhow, that means the turnover will happen with the surface cools to lower then 75 degrees. Yesterday it was 66 to 68 degrees inthe Rock Creek, main lake, Dog Creek area and turning over in the creeks.

Grumpy
Exactly. Nolin was into the 90's this summer on surface temps...felt like a hot tub. Whenever I arrive in a body of water and notice discoloration during this time of year, I assume it has turned over, JMHO.

-Rich