Schultz Lake
Schultz Lake in St. Louis County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 15.5 ft visibility. Maximum depth: 48 ft. Surface area: 210.34 acres.
- Clarity
- 15.5 ft
- Max depth
- 48 ft
- Area
- 210 acres
- Trend
- ↑ Improving
- Public access
- No
- Ice-out
- Apr 24
- Open water
- 217 days
Next lake in St. Louis County
Why Schultz 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 Schultz 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.
Schultz Lake is a 210-acre lake in St. Louis County, Minnesota with a maximum depth of 48 feet (20-foot average). Overall water quality is improving over recent sampling years. The lake supports 11 documented fish species including black bullhead, black crappie, and bluegill. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-22. 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 Schultz Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Crystal clear, you can see 15.5 ft down. Trophic State Index: 38.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 38 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Schultz Lake
Compare lakeside cabins, hotels, and vacation rentals near Schultz 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 Schultz Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 48 ft |
| Average Depth | 20 ft |
| Surface Area | 210 acres |
| Shoreline Length | 2.9 mi |
| Littoral Zone | 41% |
| 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 Schultz Lake
DNR Fisheries Survey Summary
2 surveys on file from MN DNR Fisheries. Most recent: 2012-09-04 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Largemouth Bass | 29.38 | 0.81 lb |
| Bluntnose Minnow | 11.78 | — |
| Pumpkinseed | 8.51 | 0.13 lb |
| MTS | 6.38 | — |
| Yellow Perch | 6.10 | 0.19 lb |
| Bluegill | 4.98 | 0.12 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.
Largemouth Bass
Pumpkinseed
Yellow Perch
Bluegill
From the 2012-09-04 survey
Schultz is a 215 acre lake with 87 acres (40%) of littoral area and a maximum depth of 48 feet. The lake is located approximately 10 miles north of Duluth, MN. There is no public access to Schultz Lake. Schultz was last surveyed in 1992. Schultz was assessed during the summer of 2012 to update information about fish…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Schultz Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — SchultzFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Schultz (0462)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — SchultzFish Stocking History · MN DNR LakeFinder
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.292 m/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (26 observations).
Estimated open water season: 217 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-04-08 (2024) | 2014-05-10 (2014) |
| Ice-In | 2003-11-07 (2003) | 2016-12-09 (2016) |
Most recent ice-out: 2024-04-08
Nearby Lakes in St. Louis County
Frequently asked questions about Schultz Lake
What is the water quality grade for Schultz Lake?
- Schultz Lake in St. Louis County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 15.5 ft visibility. Maximum depth: 48 ft. Surface area: 210.34 acres.
Is Schultz Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Schultz 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 Schultz Lake?
- Schultz Lake has a maximum depth of 48 feet and an average depth of 20 feet. The lake covers 210.34 acres.
What fish are in Schultz Lake?
- Fish species found in Schultz Lake include black bullhead, black crappie, bluegill, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, white sucker, yellow perch. Schultz Lake is located in St. Louis County, Minnesota.
When does Schultz Lake thaw?
- Schultz Lake typically has ice-out around Apr 24. Ice typically forms around Nov 27. The open water season is approximately 217 days.
Explore Schultz Lake across LakeGrade
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Where this data comes from
54 measurements from 2 monitoring stations, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA54 samples · 2020–2024
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (2)
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