Snyder Lake
Hennepin County, MinnesotaLimited DataHypereutrophic
Snyder Lake grades an F: every scored parameter (phosphorus) rates poorly, placing it among the most stressed lakes monitored in Minnesota.
Hypereutrophic conditions mean the lake is operating at the upper end of the productivity scale, with all the bloom risk that implies. 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 the 95 graded lakes of Hennepin County, Snyder Lake sits at rank 95, near the bottom of the county list.
No invasive species are currently listed at Snyder Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Snyder Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Snyder 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 2020-08-31. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
No clarity data. Phosphorus level: 190 µg/L. Trophic State Index: 80.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 190 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 80 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Ice Season
Historical ice data from Minnesota DNR (4 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-03 (2024) | 2023-04-13 (2023) |
| Ice-In | 2010-11-23 (2010) | 2010-11-23 (2010) |
Most recent ice-out: 2024-03-03
Location
County Ranking
Ranked #95 of 95 lakes in Hennepin County
Cleaner Lakes Within 30 Miles
Snyder Lake holds Grade F. 5 nearby lakes hold higher grades.
- BPomerleau LakeHennepin County · mi · Two grade letters higher (F → B)
- CParkers LakeHennepin County · mi · Two grade letters higher (F → C)
- CMedicine LakeHennepin County · mi · Two grade letters higher (F → C)
- CSchmidt LakeHennepin County · mi · Two grade letters higher (F → C)
- DTanager LakeHennepin County · mi · Higher grade (F → D)
Nearby Lakes in Hennepin County
More Minnesota Lake Rankings
State Parks Near Snyder Lake
Other Grade F Lakes in Minnesota
EPA Impairment Status
Snyder 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 MN27-0108-00 · Official waterbody report
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
Ice data from Minnesota DNR Climate
Most recent sample: 2020-08-31
Monitoring stations: 1