Shaver Lake
Hennepin County, MinnesotaLimited DataEutrophic
Shaver Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Minnesota average. 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 in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within Hennepin County's 104 graded lakes, Shaver Lake ranks 56 — below the local median, though not at the bottom.
No invasive species are currently listed at Shaver Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Shaver Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 4 ft. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.399 m/yr | 6 |
| Phosphorus | ↑ Improving | -1.57 µg/L/yr | 6 |
Location
County Ranking
Ranked #56 of 104 lakes in Hennepin County
Cleaner Lakes Within 30 Miles
Shaver Lake holds Grade D. One nearby lake has a higher grade.
Nearby Lakes in Hennepin County
More Minnesota Lake Rankings
State Parks Near Shaver Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
EPA Impairment Status
Shaver Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN27-0133-01 · Official waterbody report · Matched by proximity (1.47 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-09-14
Monitoring stations: 1