Million Lake
Cass County, Minnesota22 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Million Lake. Here is what has been measured.
- 20 ft max depth
- Limited data
Million Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 5 ft visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 3.8 µg/L. Maximum depth: 20 ft. Surface area: 21.98 acres.
Minnesota DNR's Standard Survey on June 15, 1989 caught 19.00 yellow perch per gill net at Million Lake. DNR survey details →
Million Lake is a 22-acre lake in Cass County, Minnesota with a maximum depth of 20 feet. Overall water quality is improving over recent sampling years. Limited fish-species data available. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-06-29. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Million 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 Million Lake
These are the measurements Minnesota PCA publishes for Million 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 5 ft. Phosphorus 21 µg/L. Chlorophyll-a 3.8 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 21µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 3.8µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Million Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on June 15, 1989 caught 19.00 yellow perch per gill net at Million Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Million Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 1989-06-15 (Standard Survey).
1 survey on file · most recent 1989-06-15 (Standard Survey)
37 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Yellow Perch | 16.25 | 0.15 lb | |
| Largemouth Bass | 1.75 | 0.97 lb | |
| Walleye | 0.50 | 1.5 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 1989-06-15 survey
Three species of fish were captured during the lake survey - largemouth bass, yellow perch, and walleye. Though not captured during the survey, an angler reported catching a bluegill in 1989. The sample of largemouth bass exhibit a good length frequency, and age and growth analysis indicates that they exhibit a good…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Million Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — MillionFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
20 ft
Surface area
22 acres
Shoreline
1.2 mi
Public access
No
Listed by Minnesota PCA
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Fishing Million Lake
Water quality readings over time
2 seasons of samples on record (2022–2023). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Phosphorus
Improving-12 µg/L/yr2 years
Chlorophyll-a
Improving-2.5 µg/L/yr2 years
Nearby Lakes in Cass County
Frequently asked questions about Million Lake
Where is Million Lake?
- Million 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 Million Lake?
- Million Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 5 ft visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 3.8 µg/L. Maximum depth: 20 ft. Surface area: 21.98 acres.
Is Million Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Million Lake?
- Million Lake has a maximum depth of 20 feet. The lake covers 21.98 acres.
What did the DNR fisheries survey find at Million Lake?
- Minnesota DNR's Standard Survey on June 15, 1989 caught 19.00 yellow perch per gill net at Million Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Million Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Million Lake?
- Public access to Million Lake is listed as no on the lake record, so confirm before you make the trip. 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.
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Where this data comes from
5 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA5 samples · 2022
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- 2130 B ~ Nephelometric Method
- 2120 B ~ Color in Water by Visual Comparison
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
Lake details from Minnesota DNR LakeFinder