Clear Lake is a 424-acre, class 24 lake located in northern Washington County, just south of the city of Forest Lake. Clear Lake is primarily managed for Walleye and hybrid Muskellunge. Currently, Walleye fall fingerlings are stocked annually at a rate of 1lb per littoral acre (267lbs of fish), and hybrid Muskellunge fingerlings are stocked at a rate of 1.5 fish per littoral acre (401 fish) in alternate years. A 17 inch minimum size limit for walleye with a reduced bag limit of 3 fish was implemented on clear lake in 2011 in cooperation with the Clear Lake Association in an attempt to improve the Walleye fishery on Clear Lake.
Three Walleyes were sampled in gillnets at a catch per unit effort (CPUE) of 0.50 fish per net. This is down significantly from the 2009 survey CPUE of 5.0 fish per gillnet, and is the lowest CPUE for Walleye since 1989. Northern Pike were sampled at a CPUE of 5.0 fish per gillnet, which is above the median rate for class 24 lakes, and the highest CPUE for Northern Pike in Clear Lake on record. Pike size structure was good, with the average pike measuring 24.47 inches long and the largest pike measuring 33 inches. Yellow Perch were sampled at a CPUE of 19.83 fish per gillnet, above the median for class 24 lakes. The average size Yellow Perch sampled in 2015 was 6.35 inches long, and only one perch over 8 inches was sampled. Bluegills were sampled at a CPUE of 89.75 fish per net in the trap nets, above the third quartile for class 24 lakes. The average Bluegill sampled was 5.96 inches long, and the largest was 7 inches. Black Crappies were sampled at a CPUE of 1.38 fish per trap net, below the first quartile for class 24 lakes but higher than the 0.78 fish per trap net observed in 2009. The average size Black Crappie sampled in 2015 was 7 inches in length, and no fish over 8 inches were sampled.
- Eurasian Watermilfoil
Recreational activities such as recreational boating, angling, waterfowl hunting, and diving may spread aquatic invasive species. Some aquatic invasive species can attach to boats, while others can become tangled on propellers, anchor lines, or boat trailers. Many species can survive in bilge water, ballast tanks, and motors or may hide in dirt or sand that clings to nets, buckets, anchors, and waders. Fortunately, completing simple steps can prevent the transport of aquatic invasive species.