Spring Canyon and Ft. Spokane are probably the two biggest campground/launch sites on Lake Roosevelt. Success rates for kokanee will be better near the dam than Ft. Spokane area this time of year.
That said, water levels are on the rise. 1245' as of 2am and projected to go from 1245.21' at 11pm on 4/30 to 1253.38 at 5am 5/7! Generally speaking, rising water conditions make for tough fishing and lots of surface debris.
To stay abreast of reservoir levels, visit
http://www.wrh.noaa.gov/otx/" onclick="window.open(this.href);return false; and click on "Hydrology - Rivers and Lakes". Select Grand Coulee Dam and it will take you here -
http://water.weather.gov/ahps2/hydrogra ... gage=gcdw1" onclick="window.open(this.href);return false;