Lake Ten-Deep Hole

On the LakeGrade rubric, Lake Ten-Deep Hole pulls an A: clarity at 28.7 ft and 15 µg/L of phosphorus put it in the top bracket for Wisconsin. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

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 37 ft puts Lake Ten-Deep Hole in the middle of Wisconsin's depth distribution. At 42 acres, Lake Ten-Deep Hole sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Among the 26 graded lakes in Price County, Lake Ten-Deep Hole sits at rank 7, above the county median.

Lake Ten-Deep Hole has no invasive species recorded in Wisconsin state databases as of 2022, though prevention practices still apply at all access points. The fishery is bass-led, with 3 documented species across the lake's records. A documented public access point at Lake Ten-Deep Hole 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.