Look on the DFG site. You have to hunt a bit but info is there.
I looked up 2008 numbers and the top 3 sites were:
Gray Lodge @ 295 birds
Upper Butte Little Dry Ck @ 206
Upper Butte Howard @ 153
Pretty bleak numbers but 2008 and 2009 were considered drought years. Maybe 2010 will be better.
The Richmond Hunting club might be a good way to go as well but I haven't seen their lands.
Let us know if you find something promising.
Good Luck