Titlow Lake

Titlow Lake grades an F: water clarity, phosphorus, and chlorophyll-a all rate poorly, placing it among the most stressed lakes monitored in Minnesota. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

A TSI above 70 puts Titlow Lake in hypereutrophic territory: visible blooms are common, and clarity rarely climbs even in early summer. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Titlow Lake ranks 1 of 2 in Sibley County — solidly in the upper half of the local distribution.

No invasive species are currently listed at Titlow Lake — the lake remains off the Minnesota infested-waters roster. The lake's fish records list 8 species — a varied community without one dominant gamefish. A documented public access point at Titlow Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.