Sidie Hollow Lake

On the LakeGrade scale Sidie Hollow Lake grades a B, with clarity at 12.0 ft and phosphorus readings still being added placing it above the Wisconsin median. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

A TSI near 41 places Sidie Hollow Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. A maximum depth of 22 ft puts Sidie Hollow Lake in the middle of Wisconsin's depth distribution. The lake is compact at 35 acres, with partial shoreline records and little volume to buffer nutrient inputs.

An invasive species record — Curly-Leaf Pondweed — has been logged at Sidie Hollow Lake; Wisconsin DNR maintains the official infested-waters list. The fishery is bass-led, with 3 documented species across the lake's records. A documented public access point at Sidie Hollow 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.