Centerville Lake

On the LakeGrade rubric Centerville Lake fails the cutoffs — a TSI of 66 and persistent algal pressure put it in the bottom tier. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. Centerville Lake reaches 19 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. Centerville Lake covers 474 acres alongside 4.0 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within the 24 graded lakes of Anoka County, Centerville Lake sits at rank 23, near the bottom of the county list.

Eurasian watermilfoil has been documented at Centerville Lake, requiring shoreline management to keep dense mats from crowding native vegetation. The fishery includes walleye alongside the lake's other 14 documented species — a notable draw for Minnesota anglers. Public access is available — the lake is on the Minnesota PCA public-access list. Ice-out has been recorded 16 times at Centerville Lake, with a median around Mar 31. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.