Hosmer Lake is open to fishing all year. The district office continues to receive positive reports on fly angling for Brook and Rainbow Trout. The warmer lower lake is experiencing an algae bloom and fish fish are currently congregating in the upper lake and the channel. Callibaetis and damsels are an integral part of the diet at Hosmer, and we recommend anglers stock their fly boxes accordingly. Restricted to fly-fishing only with barbless hooks. Catch-and-release for all species.