Schwappauf Lake
Hennepin County, Minnesota40 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Schwappauf Lake. Here is what has been measured.
- Eutrophic
- 29 ft max depth
- Public access
Schwappauf Lake in Hennepin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 4.4 ft visibility. Phosphorus: 65.1 µg/L. Chlorophyll-a (algae): 12.7 µg/L. Maximum depth: 29 ft. Surface area: 39.75 acres.
Minnesota DNR's Standard Survey on August 4, 1992 caught 2.50 northern pike per gill net at Schwappauf Lake. DNR survey details →
Schwappauf Lake is a 40-acre productive, nutrient-rich eutrophic lake in Hennepin County, Minnesota with a maximum depth of 29 feet. Phosphorus level is declining over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 80 other monitored lakes in Hennepin County, Schwappauf Lake ranks #52 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-07. Methodology: how these readings are compared.
Swimming conditions
Readings onlyElevated nutrients
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Schwappauf Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Schwappauf Lake
These are the measurements Minnesota PCA publishes for Schwappauf Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.4 ft. Phosphorus 65.1 µg/L. Chlorophyll-a 12.7 µg/L. TSI 59.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 65.1µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 12.7µg/L | Fair GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 59 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Schwappauf Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Schwappauf Lake typically sits around 62°F at the surface in October. Summer average is about 72°F. Usually warmest in Jul (about 73°F) and coldest in Apr (about 49°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (49°F) to its warmest (73°F).
Typical surface water temperature by month, from 92 field readings (2010–2024) via the EPA Water Quality Portal. See the full Schwappauf Lake water temperature breakdown →
Minnesota DNR's Standard Survey on August 4, 1992 caught 2.50 northern pike per gill net at Schwappauf Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Schwappauf Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
3 surveys on file from MN DNR Fisheries. Most recent: 1992-08-04 (Standard Survey).
3 surveys on file · most recent 1992-08-04 (Standard Survey)
34 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 9.35 | 0.31 lb | |
| Yellow Bullhead | 8.52 | 0.71 lb | |
| Black Bullhead | 5.05 | 0.88 lb | |
| Black Crappie | 3.17 | 0.27 lb | |
| Pumpkinseed | 2.93 | 0.18 lb | |
| Northern Pike | 2.88 | 1.73 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
From the 1992-08-04 survey
NUMBERS OF FISH CAPTURED WERE LOW DUE TO THE FISH KILL LAST WINTER. NOP WERE THE ONLY FISH CAPTURED IN THE GILLNETS, AND WERE SAMPLED IN NUMBERS NEAR THE STATE AND LOCAL MEDIANS FOR GILLNETS AND TRAPNETS. ONE NOP WAS AGE 0 (TWO FISH OF SIMILAR SIZE WERE GILLED IN TRAPNET LEADS), TWO AGE 3, ONE AGE 4, AND TWO AGE 5.…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Schwappauf Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — SchandellFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
29 ft
Surface area
40 acres
Shoreline
1.1 mi
Littoral zone
73%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Stays via Stay22
Stays near Schwappauf Lake
Compare lakeside cabins, hotels, and vacation rentals near Schwappauf Lake in Hennepin 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Schwappauf Lake are listed below.
Top-rated places to stay near Schwappauf Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
Follow Schwappauf Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Schwappauf Lake
Water quality readings over time
2 seasons of samples on record (2023–2024). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable2 years
Phosphorus
Worsening+20.5 µg/L/yr2 years
Chlorophyll-a
Improving-1.7 µg/L/yr2 years
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Schwappauf Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Meadows Of Whisper Creek WwtpGreenfield · 1.3 mi away · NPDES MN0066753Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Hennepin County
Frequently asked questions about Schwappauf Lake
Where is Schwappauf Lake?
- Schwappauf Lake is a lake in Hennepin County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Schwappauf Lake?
- Schwappauf Lake in Hennepin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 4.4 ft visibility. Phosphorus: 65.1 µg/L. Chlorophyll-a (algae): 12.7 µg/L. Maximum depth: 29 ft. Surface area: 39.75 acres.
Is Schwappauf Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Schwappauf Lake?
- Schwappauf Lake typically sits around 62°F at the surface in October, from 92 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
How deep is Schwappauf Lake?
- Schwappauf Lake has a maximum depth of 29 feet. The lake covers 39.75 acres.
What did the DNR fisheries survey find at Schwappauf Lake?
- Minnesota DNR's Standard Survey on August 4, 1992 caught 2.50 northern pike per gill net at Schwappauf Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Schwappauf Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Schwappauf Lake?
- Public access to Schwappauf Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Schwappauf Lake across LakeQuality
Fish species and the cleanest lakes across Minnesota
Fish species and best lakes in Hennepin County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Crow River Watershed, ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
More lakes in Minnesota
State Parks Near Schwappauf Lake
Other Lakes in Minnesota
Eutrophic Lakes in Minnesota
Where this data comes from
81 measurements from 1 monitoring station, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA81 samples · 2023–2024
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- 4500 N C ~ Persufate Method for Total Nitrogen
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake details from Minnesota DNR LakeFinder