Rex,
The winds aren't always that fickle, but it is an inland lake. Here is a  
link to the Army Corps of Engineers.
 
_http://www.sas.usace.army.mil/lakes/hartwell/_ 
(http://www.sas.usace.army.mil/lakes/hartwell/) 
 
 
Sailing is restricted to the part of the lake that doesn't have bridges.  

>From my marina to the dam is 13.085 miles according to my mapping program. There  
are a lot of other areas to explore, but these would be the prime sailing  
waters.
 
Rummy