Green Water Lake
Becker County, Minnesota74 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Green Water Lake. Here is what has been measured.
- Mesotrophic
- 57 ft max depth
- Limited data
Green Water Lake in Becker County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 12.1 ft visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 3 µg/L. Maximum depth: 57 ft. Surface area: 73.57 acres.
Minnesota DNR's Standard Survey on June 22, 1987 caught 0.50 walleye per gill net at Green Water Lake. DNR survey details →
Green Water Lake is a 74-acre mesotrophic lake in Becker County, Minnesota with a maximum depth of 57 feet. The lake supports 9 documented fish species including bluegill, green sunfish, and hybrid sunfish. No public access — the lake is private or restricted. Compared to the 83 other monitored lakes in Becker County, Green Water Lake ranks #55 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-10. Methodology: how these readings are compared.
What Green Water Lake is good for
From access and monitoring records, not editorial picks.
- Clear water12.1 ft of visibility
- Fishing9 species recorded
- Deep water57 ft surveyed max depth
Swimming conditions
Readings onlyLimited data
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 Green Water 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 Green Water Lake
These are the measurements Minnesota PCA publishes for Green Water Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 12.1 ft. Phosphorus 14 µg/L. Chlorophyll-a 3 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 12.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 14µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 3µg/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. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Green Water Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on June 22, 1987 caught 0.50 walleye per gill net at Green Water Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Green Water Lake’s water-quality measurements separately. 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: 1987-06-22 (Standard Survey).
1 survey on file · most recent 1987-06-22 (Standard Survey)
39 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 46.63 | 0.14 lb | |
| Hybrid Sunfish | 12.56 | 0.15 lb | |
| Yellow Perch | 12.00 | 0.14 lb | |
| Rock Bass | 8.56 | 0.15 lb | |
| Green Sunfish | 5.75 | 0.02 lb | |
| Northern Pike | 4.69 | 1.02 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 1987-06-22 survey
ROCK BASS, BLUEGILL, HYBRID SUNFISH AND YELLOW PERCH POPULATIONS APPEAR TO BE EXCEPTIONALLY HIGH. NORTHERN PIKE AND LARGEMOUTH BASS NUMBERS ARE PROBABLY ABOVE LOCAL AND STATE MEDIANS. WALL- EYE ARE SEEMINGLY LIMITED TO A FEW IMMIGRANTS FROM ICE CRACKING LAKE. WITH NO FISHERIES MANAGEMENT, THIS LAKE APPEARS TO BE A…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Green Water Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Green WaterFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Green Water (1025)Aquatic Plant Report · MN DNR LakeFinder
Lake Details
Max depth
57 ft
Surface area
74 acres
Shoreline
2 mi
Littoral zone
22%
Share shallower than 15 ft
Public access
No
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,522 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Green Water Lake
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Top-rated places to stay near Green Water Lake
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Follow Green Water Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Green Water Lake
- → Green Water Lake fishing: DNR survey catch rates, species & stocking
- → Green Water Lake fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Green Water Lake fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Green Water Lake? (mercury & PFAS guide)
Nearby Lakes in Becker County
Frequently asked questions about Green Water Lake
Where is Green Water Lake?
- Green Water Lake is a lake in Becker County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Green Water Lake?
- Green Water Lake in Becker County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 12.1 ft visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 3 µg/L. Maximum depth: 57 ft. Surface area: 73.57 acres.
Is Green Water Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Green Water Lake?
- Green Water Lake has a maximum depth of 57 feet. The lake covers 73.57 acres.
What fish are in Green Water Lake?
- Fish species found in Green Water Lake include bluegill, green sunfish, hybrid sunfish, largemouth bass, northern pike, rock bass, sunfish, yellow bullhead, yellow perch. Green Water Lake is located in Becker County, Minnesota.
What did the DNR fisheries survey find at Green Water Lake?
- Minnesota DNR's Standard Survey on June 22, 1987 caught 0.50 walleye per gill net at Green Water Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Green Water Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Green Water Lake?
- Public access to Green Water 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.
Explore Green Water Lake across LakeQuality
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Where this data comes from
40 measurements from 2 monitoring stations, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Chippewa Tribe, Minnesota (White Earth Band) (Tribal)
WEARTH_WQX40 samples · 2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- Turbidity by Nephelometry
Monitoring station identifiers (2)
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 size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder