Strand Lake
St. Louis County, MinnesotaEutrophic
The LakeGrade rubric puts Strand Lake at a C: clarity at 3.5 ft, 43 µg/L of phosphorus, and a TSI of 59 signal an intermediate trophic state. 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. Strand Lake reaches 16 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. Strand Lake covers 330 acres alongside 5.2 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Strand Lake sits at rank 136 of 187 in St. Louis County, in the lower half of the local distribution.
No invasive species are currently listed at Strand Lake — the lake remains off the Minnesota infested-waters roster. The fishery includes walleye alongside the lake's other 12 documented species — a notable draw for Minnesota anglers. Public access is available — the lake is on the Minnesota PCA public-access list. Ice-out has been recorded 9 times at Strand Lake, with a median around Apr 17. 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 2024-07-14. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 3.5 ft. Phosphorus level: 43 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.5 ft | D |
| Phosphorus | 43 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 16 ft |
| Surface Area | 330.21 acres |
| Shoreline Length | 5.2 mi |
| Littoral Zone | 100% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Strand Lake (14-day solunar calendar)
→ Is it safe to eat fish from Strand Lake? (mercury & PFAS guide)
→ Strand Lake fishing regulations (limits, seasons, special rules)
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.049 m/yr | 3 |
| Phosphorus | ↓ Declining | +5.96 µg/L/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (18 observations).
Estimated open water season: 219 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2006-04-11 (2006) | 2008-04-26 (2008) |
| Ice-In | 2017-11-05 (2017) | 2006-11-29 (2006) |
Most recent ice-out: 2025-04-17
Location
County Ranking
Ranked #136 of 187 lakes in St. Louis County
Nearby Lakes in St. Louis County
More Minnesota Lake Rankings
Other Grade C Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
8 surveys on file from MN DNR Fisheries. Most recent: 2025-09-08 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Walleye | 5.22 | 1.34 lb |
| Yellow Perch | 4.73 | 0.4 lb |
| Pumpkinseed | 4.54 | 0.23 lb |
| Black Crappie | 2.60 | 0.63 lb |
| Bluegill | 2.51 | 0.3 lb |
| White Sucker | 1.43 | 3.2 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.
Walleye
Yellow Perch
Pumpkinseed
Black Crappie
From the 2025-09-08 survey
Strand Lake is a 330-acre lake located 5 miles southeast of Cotton, Minnesota, with a maximum depth of 16 feet. There is a township administered; gravel back-in access located on the north side of the lake off County Road 973. The 2019 Lake Management Plan (LMP) identified Walleye, Bluegill, and Black Crappie as…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Strand Lake. 4 reports on file.
- —Fisheries Lake Survey — StrandFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Strand (1821)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — StrandFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — StrandPublic Water Access Sites · MN DNR LakeFinder
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate
Most recent sample: 2024-07-14
Monitoring stations: 1