Fishing Cass Lake

Cass Lake's 1,280 acres offer exceptional walleye fishing with fish growing significantly faster than state average — walleye growth index of +1.0 means these fish reach size quicker than most Michigan lakes. The walleye population is entirely sustained by stocking every other year, with 59% exceeding the 15-inch minimum size limit and fish ranging up to 24 inches. Bluegill provide the lake's bread-and-butter fishing with a Schneider's Index of 4.8 indicating satisfactory to good population structure, and 46% of bluegill caught in large-mesh nets exceeded 7 inches. The lake stratifies with the thermocline around 25-27 feet deep, but dissolved oxygen remains suitable for fish down to 110 feet, meaning walleye have plenty of cold water refuge during summer stratification. Bass fishing can be excellent but boat traffic during summer makes early morning and late evening the prime times — unfortunately, the state park boat launch closes daily, limiting access during these optimal periods. The lake's 121-foot maximum depth and oligotrophic status support one of the few remaining cisco populations in southeast Michigan, a state-threatened species requiring cold, clean water. Northern pike are present but in lower numbers than expected, though the 2008 population estimate of 0.8 fish per acre suggests they're more abundant than recent surveys indicate. The lake's extensive shallow flats (40% less than 10 feet deep) have sparse vegetation except in protected bays and canals where aquatic plants provide structure for bass and panfish. Rock bass are abundant and underutilized by anglers, averaging 6.3 inches with 38% reaching 7 inches or larger. The diverse forage base includes massive schools of sand shiners (538 caught), bluntnose minnows, and logperch that support the predator fishery. Master Angler awards since 2001 include bluegill, rock bass, black crappie, pumpkinseed, and multiple bass, confirming the lake produces trophy-caliber fish across species.