Wampus Lake
Lake County, MinnesotaEutrophic
Wampus Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Secchi readings are the weakest of the three parameters, suggesting suspended sediment or algal biomass dominates the optical signal.
Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. Wampus Lake is a shallow lake at 6 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. At 139 acres, Wampus Lake fits the Minnesota median for monitored lakes, with 2.9 miles of shoreline. Wampus Lake ranks 131 of 159 in Lake County — at the lower end of the locally monitored distribution.
Wampus Lake has no invasive species recorded in Minnesota state databases as of 2025, though prevention practices still apply at all access points. The lake's fish records list 1 species — a varied community without one dominant gamefish. No formal public access is documented at Wampus Lake — most use is by shoreline residents and their guests. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-03. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 3.1 ft of visibility. Phosphorus level: 14 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.1 ft | F |
| Phosphorus | 14 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 6 ft |
| Average Depth | 3 ft |
| Surface Area | 138.77 acres |
| Shoreline Length | 2.9 mi |
| Littoral Zone | 100% |
| Public Access | No |
Fish Species
Click a species to see every graded lake where it is documented.
→ Best fishing times for Wampus Lake (14-day solunar calendar)
→ Is it safe to eat fish from Wampus Lake? (mercury & PFAS guide)
→ Wampus Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #131 of 159 lakes in Lake County
Cleaner Lakes Within 30 Miles
Wampus Lake holds Grade C. 3 nearby lakes hold higher grades.
- ADunnigan LakeLake County · mi · Two grade letters higher (C → A)
- BMiddle Mcdougal LakeLake County · mi · Higher grade (C → B)
- BBeaver Hut LakeLake County · mi · Higher grade (C → B)
Nearby Lakes in Lake County
More Minnesota Lake Rankings
State Parks Near Wampus Lake
Other Grade C Lakes in Minnesota
Eutrophic Lakes in Minnesota
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Most recent sample: 2025-09-03
Monitoring stations: 1