Woman Lake
Cass County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Woman Lake. Here is what has been measured.
- Oligotrophic
- zebra mussel
- Public access
Woman Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 15 ft visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 3.2 µg/L.
Woman Lake is a cold, clear oligotrophic lake in Cass County, Minnesota. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 103 other monitored lakes in Cass County, Woman Lake ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-29. Methodology: how these readings are compared.
Woman Lake has one public boat landing. Vrbo is where to look for cabins and lake homes around Woman Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Woman Lake is good for
From access and monitoring records, not editorial picks.
- Clear water15 ft of visibility
- Boat launch1 documented ramp
Swimming conditions
Readings onlyLow algae
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 Woman 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 Woman Lake
These are the measurements Minnesota PCA publishes for Woman Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 15 ft down. Phosphorus 11 µg/L. Chlorophyll-a 3.2 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 15ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 11µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 3.2µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 40 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Woman Lake
Answers come straight from the public measurements and survey records on this page.
Blue-Green Algae (Cyanobacteria)
There’s no recent EPA CyAN cyanobacteria estimate for Woman Lake — clouds, ice, or an off-season gap in coverage. The most recent reading was moderate (29,648 cells/mL) on November 22, 2025.
Blue-green algae can appear and clear within days, so check your state’s current advisory before swimming. EPA CyAN ↗
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Woman Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Public Water Access Sites — Woman (main lake)Public Water Access Sites · MN DNR LakeFinder
Recreation & Access
- Woman Lake (Northwest)Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Woman Lake
Compare lakeside cabins, hotels, and vacation rentals near Woman Lake in Cass 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 Woman Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Follow Woman Lake’s readings
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Fishing Woman Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Nearby Lakes in Cass County
Frequently asked questions about Woman Lake
Where is Woman Lake?
- Woman Lake is a lake in Cass County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Woman Lake?
- Woman Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 15 ft visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 3.2 µg/L.
Is Woman Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Does Woman Lake have blue-green algae?
- There is no recent EPA CyAN cyanobacteria estimate for Woman Lake (clouds, ice, or an off-season gap). The most recent reading was moderate (29,648 cells/mL). Blue-green algae can appear and clear within days, so check Minnesota's current advisory before swimming.
Are there boat ramps on Woman Lake?
- Woman Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Woman Lake (Northwest). Public access is listed as yes.
Can I fish at Woman Lake?
- Woman Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. 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 Woman Lake across LakeQuality
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Where this data comes from
143 measurements from 7 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA143 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (7)
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
Named boat-access points from the USGS National Boat Ramps inventory