W Two Rivers Reservoir

W Two Rivers Reservoir sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Minnesota norms.

At a TSI of 51, W Two Rivers Reservoir reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. W Two Rivers Reservoir reaches 27 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. W Two Rivers Reservoir covers 967 acres alongside 30.8 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within St. Louis County's 187 graded lakes, W Two Rivers Reservoir ranks 120 — below the local median, though not at the bottom.

No invasive species are currently listed at W Two Rivers Reservoir — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for W Two Rivers Reservoir, which usually reflects a lack of formal fisheries survey work rather than an empty lake. Public access is available — the lake is on the Minnesota PCA public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.