Tiedman Pond

On the LakeGrade rubric Tiedman Pond fails the cutoffs — a TSI of 70 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.

At a TSI of 70, Tiedman Pond reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. Tiedman Pond is small — 9 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Tiedman Pond sits at rank 16 of 23 in Dane County, in the lower half of the local distribution.

No invasive species are currently listed at Tiedman Pond — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Tiedman Pond, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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.