School Section Lake
Stearns County, MinnesotaMesotrophic
School Section Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Minnesota norms.
Mesotrophic conditions dominate at School Section Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At only 14 ft deep, School Section Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. School Section Lake covers 211 acres alongside 2.7 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. School Section Lake ranks 20 of 55 in Stearns County — solidly in the upper half of the local distribution.
School Section 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 8 documented species across the lake's records. A documented public access point at School Section Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been recorded 6 times at School Section Lake, with a median around Apr 5. 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 2023-09-18. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 9.8 ft. Phosphorus level: 14 µg/L. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.8 ft | C |
| Phosphorus | 14 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 14 ft |
| Average Depth | 8.5 ft |
| Surface Area | 210.54 acres |
| Shoreline Length | 2.7 mi |
| Littoral Zone | 95% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for School Section Lake (14-day solunar calendar)
→ Is it safe to eat fish from School Section Lake? (mercury & PFAS guide)
→ School Section Lake fishing regulations (limits, seasons, special rules)
Invasive Species
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.2 m/yr | 2 |
| Phosphorus | ↓ Declining | +1.5 µg/L/yr | 2 |
Ice Season
Historical ice data from Minnesota DNR (13 observations).
Estimated open water season: 240 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2017-03-09 (2017) | 2018-05-01 (2018) |
| Ice-In | 2018-11-10 (2018) | 2017-12-12 (2017) |
Most recent ice-out: 2020-04-07
Location
County Ranking
Ranked #20 of 55 lakes in Stearns County
Nearby Lakes in Stearns County
More Minnesota Lake Rankings
State Parks Near School Section Lake
Other Grade B Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
5 surveys on file from MN DNR Fisheries. Most recent: 2018-08-29 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 71.53 | 0.13 lb |
| Yellow Bass | 31.83 | 0.4 lb |
| Black Bullhead | 27.80 | 0.7 lb |
| Pumpkinseed | 24.36 | 0.15 lb |
| Largemouth Bass | 22.94 | 0.92 lb |
| Yellow Perch | 20.26 | 0.29 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
Largemouth Bass
From the 2018-08-29 survey
A targeted survey of nearshore fish species in School Section Lake was conducted on August 29-30, 2018 by Index of Biological Integrity (IBI) Program Staff. Sampling sites were evenly spaced around the lake and each was sampled by backpack electrofishing and seining with a 50-foot seine, where possible. Backpack…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for School Section Lake. 3 reports on file.
- —Fisheries Lake Survey — School SectionFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — School SectionFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — School SectionPublic 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: 2023-09-18
Monitoring stations: 1