On all three lakes, the projected date to start holding water is March 15th each year. That can change depending on rainfall (too much or too little).

Go to the Louisville Corps of Engineer website:

http://www.lrl.usace.army.mil/wc/reports/lkreport.html

Then click on the blue numbers for "TODAYS POOL" for each lake and look at the green line on the middle graph that comes up.

Grumpy