For those of you who are interested. I spoke with the Seattle Public Utilities and they said that they will be bringing Chester Morse reservoir up to normal capacity and this should cause Rattlesnake Lake to go up as well. Rattlesnake is fed by seepage from Chester Morse. Because of this the water levels will vary greatly and the fish population of the lake is not self sustaining. WDFW will plant the lake later this month when water levels come up. They plan a generous supply of Triploids and the regular plant of trout. The lake is open as of April 28th but still low. I plan to head there this coming week after work. Also, for those fly fishing the lake, the evening bite is best usually and I was told that you can park outside the main gate and walk in to the lake to fish after normal park hours.