Snelling Lake
Hennepin County, MinnesotaLimited DataEutrophic
Snelling Lake earns an F: phosphorus readings still being added and clarity at 1.6 ft signal heavy nutrient loading from the surrounding watershed.
At a TSI of 70, Snelling Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. Snelling Lake is a shallow lake at 10 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. At 103 acres, Snelling Lake fits the Minnesota median for monitored lakes, with 1.9 miles of shoreline. Within Hennepin County's 95 graded lakes, Snelling Lake ranks 61 — below the local median, though not at the bottom.
Snelling Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery is bass-led, with 10 documented species across the lake's records. A documented public access point at Snelling Lake 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.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2020-09-28. 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
Very murky, less than 1.6 ft of visibility. Trophic State Index: 70.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 70 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 9.5 ft |
| Surface Area | 102.58 acres |
| Shoreline Length | 1.9 mi |
| Littoral Zone | 99% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Snelling Lake (14-day solunar calendar)
→ Is it safe to eat fish from Snelling Lake? (mercury & PFAS guide)
→ Snelling Lake fishing regulations (limits, seasons, special rules)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.117 m/yr | 2 |
Location
County Ranking
Ranked #61 of 95 lakes in Hennepin County
Cleaner Lakes Within 30 Miles
Snelling Lake holds Grade F. 4 nearby lakes hold higher grades.
Nearby Lakes in Hennepin County
More Minnesota Lake Rankings
State Parks Near Snelling Lake
Other Grade F Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
13 surveys on file from MN DNR Fisheries. Most recent: 2017-06-06 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 30.62 | 0.13 lb |
| Black Bullhead | 15.27 | 0.4 lb |
| Pumpkinseed | 11.92 | 0.09 lb |
| Hybrid Sunfish | 10.82 | 0.1 lb |
| Yellow Bass | 5.81 | 0.36 lb |
| Brown Bullhead | 2.90 | 0.57 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Bluegill
Black Bullhead
Pumpkinseed
Hybrid Sunfish
From the 2017-06-06 survey
Snelling Lake is located in Fort Snelling State Park, one of the most popular state parks in Minnesota. Shore fishing locations include a pier on the north end of the lake. Boat access is available on the southern end of the lake but gas engines are prohibited. This shallow class 43 lake is heavily vegetated with a…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Snelling Lake. 3 reports on file.
- —Fisheries Lake Survey — SnellingFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — SnellingFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — SnellingPublic Water Access Sites · MN DNR LakeFinder
Reservoir Info (USACE NID)
Snelling Lake is a man-made reservoir impounded by the Snelling Lake (completed 1965), built primarily for recreation on the Minnesota River-TR; other-type dam, 15 ft tall and 6 ft long.
- Surface area
- 103 ac
- Normal storage
- 896 ac-ft
- Max storage
- 1,232 ac-ft
- Drainage area
- 1.4 sq mi
- Hazard class
- Low
- Owner
- MNDNR-Parks
Source: USACE National Inventory of Dams, NID ID MN00521 · Operator website
EPA Impairment Status
Snelling 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 MN27-0001-00 · 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
Lake details from Minnesota DNR LakeFinder
Most recent sample: 2020-09-28
Monitoring stations: 1