Schubert Lake
Schubert Lake in St. Louis County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 6.5 ft visibility. Maximum depth: 24 ft. Surface area: 211.79 acres.
- Clarity
- 6.5 ft
- Max depth
- 24 ft
- Area
- 212 acres
- Trend
- → Stable
- Public access
- No
- Ice-out
- Apr 26
- Open water
- 212 days
Next lake in St. Louis County
Why Schubert Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Schubert Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Schubert Lake is a 212-acre lake in St. Louis County, Minnesota with a maximum depth of 24 feet. The lake supports 9 documented fish species including black crappie, bluegill, and largemouth bass. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Schubert Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 6.5 ft. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 50 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Schubert Lake
Compare lakeside cabins, hotels, and vacation rentals near Schubert Lake in St. Louis County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Schubert Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Surface Area | 212 acres |
| Shoreline Length | 4 mi |
| Littoral Zone | 66% |
| Public Access | No |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Schubert Lake
DNR Fisheries Survey Summary
2 surveys on file from MN DNR Fisheries. Most recent: 2003-07-16 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 24.69 | 0.15 lb |
| Largemouth Bass | 11.37 | 0.47 lb |
| Smallmouth Bass | 4.00 | 1.16 lb |
| Yellow Perch | 2.83 | 0.11 lb |
| Rock Bass | 2.39 | 0.47 lb |
| Northern Pike | 1.88 | 1.46 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
Largemouth Bass
Smallmouth Bass
Yellow Perch
From the 2003-07-16 survey
Schubert Lake is a 205 acre lake with 140 (68%) littoral acres and a maximum depth of 24 feet. It is located east of Highway 53 off of CR #815. There is no public back-in boat access, however, the lake is accessible off of CR #815. Primary management is for largemouth bass and smallmouth bass although walleye…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Schubert Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — SchubertFisheries Lake Survey · MN DNR LakeFinder
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.039 m/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (24 observations).
Estimated open water season: 212 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-15 (2024) | 2022-05-06 (2022) |
| Ice-In | 2017-11-08 (2017) | 2024-12-03 (2024) |
Most recent ice-out: 2024-03-15
Graded lakes near Schubert Lake
Schubert Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in St. Louis County
Frequently asked questions about Schubert Lake
What is the water quality grade for Schubert Lake?
- Schubert Lake in St. Louis County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 6.5 ft visibility. Maximum depth: 24 ft. Surface area: 211.79 acres.
Is Schubert Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Schubert Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Schubert Lake?
- Schubert Lake has a maximum depth of 24 feet. The lake covers 211.79 acres.
What fish are in Schubert Lake?
- Fish species found in Schubert Lake include black crappie, bluegill, largemouth bass, northern pike, pumpkinseed, rock bass, smallmouth bass, walleye, yellow perch. Schubert Lake is located in St. Louis County, Minnesota.
When does Schubert Lake thaw?
- Schubert Lake typically has ice-out around Apr 26. Ice typically forms around Nov 24. The open water season is approximately 212 days.
Explore Schubert Lake across LakeGrade
Depth, room, public access, and the state wake-sport rules
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Where this data comes from
39 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA39 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate