Sand Lake

Sand Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. A maximum depth of 35 ft puts Sand Lake in the middle of Wisconsin's depth distribution. Sand Lake is small — 99 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Sand Lake ranks 9 of 33 in Iron County — solidly in the upper half of the local distribution.

Sand Lake has no invasive species recorded in Wisconsin state databases as of 2025, though prevention practices still apply at all access points. The fishery is bass-led, with 3 documented species across the lake's records. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.