Blockhouse Lake

On the scoring rubric Blockhouse Lake grades a D: clarity at 6.0 ft and phosphorus readings still being added keep it in the lower bracket for Price County. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. At only 8 ft deep, Blockhouse Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. At 241 acres, Blockhouse Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Within the 27 graded lakes of Price County, Blockhouse Lake sits at rank 21, near the bottom of the county list.

An invasive species record — Chinese Mystery Snail — has been logged at Blockhouse Lake; Wisconsin DNR maintains the official infested-waters list. The fishery includes walleye alongside the lake's other 5 documented species — a notable draw for Wisconsin anglers. A documented public access point at Blockhouse Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.