Lower Spunk Lake

Lower Spunk Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. The lake bottoms out at 28 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. The lake's 179 acres and 3.8 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Within Stearns County's 55 graded lakes, Lower Spunk Lake ranks 29 — below the local median, though not at the bottom.

Eurasian watermilfoil is established at Lower Spunk Lake, which can dampen recreational access and pressure the native plant community. The fishery includes walleye alongside the lake's other 13 documented species — a notable draw for Minnesota anglers. A documented public access point at Lower Spunk Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been recorded 9 times at Lower Spunk Lake, with a median around Apr 10. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.