Green Prairie Fish Lake
Green Prairie Fish Lake in Morrison County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8 ft visibility. Maximum depth: 22 ft. Surface area: 182.48 acres.
- Clarity
- 8 ft
- Typical in August
- 76°F
- Max depth
- 22 ft
- Area
- 182 acres
- Trend
- ↓ Declining
- Public access
- Yes
- Ice-out
- Apr 16
- Open water
- 229 days
Next lake in Morrison County
Why Green Prairie Fish 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 Green Prairie Fish 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.
Green Prairie Fish Lake is a 182-acre lake in Morrison County, Minnesota with a maximum depth of 22 feet. Overall water quality is declining over recent sampling years. The lake supports 14 documented fish species including black bullhead, black crappie, and bluegill. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-10-15. 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 Green Prairie Fish Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 8 ft. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Green Prairie Fish Lake
Compare lakeside cabins, hotels, and vacation rentals near Green Prairie Fish Lake in Morrison 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 Green Prairie Fish Lake
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Water Temperature
Green Prairie Fish Lake typically sits around 76°F at the surface in August. Summer average is about 76°F. Usually warmest in Jul (about 79°F) and coldest in Apr (about 51°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 79 field readings (2011–2025) via the EPA Water Quality Portal. See the full Green Prairie Fish Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 22 ft |
| Surface Area | 182 acres |
| Shoreline Length | 2.5 mi |
| Littoral Zone | 45% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Green Prairie Fish LakePublic
- Fletcher CreekPublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Green Prairie Fish Lake
DNR Fisheries Survey Summary
18 surveys on file from MN DNR Fisheries. Most recent: 2025-05-15 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 59.21 | 0.16 lb |
| SUN | 25.43 | — |
| Largemouth Bass | 16.32 | 0.93 lb |
| Yellow Perch | 7.36 | 0.18 lb |
| Yellow Bass | 7.33 | 0.54 lb |
| JND | 5.14 | — |
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.
Bluegill
Largemouth Bass
Yellow Perch
Yellow Bass
From the 2025-05-15 survey
Green Prairie Fish Lake is an 182-acre lake located approximately 6 miles east of Randall. The lake has a maximum depth of 22 feet with a variety of submerged, emergent, and floating-leaf vegetation near the shoreline. During 2025, the fishing pier located on the southwest side of the lake was extended out from shore…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Green Prairie Fish Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Green Prairie FishFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Green Prairie Fish (1923)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — Green Prairie FishFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — Green Prairie FishPublic Water Access Sites · MN DNR LakeFinder
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.168 m/yr | 6 |
Ice Season
Historical ice data from Minnesota DNR (14 observations).
Estimated open water season: 229 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-11 (2024) | 2008-04-29 (2008) |
| Ice-In | 2018-11-10 (2018) | 2017-12-11 (2017) |
Most recent ice-out: 2024-03-11
EPA Impairment Status
Green Prairie Fish Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MN49-0035-00 · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Green Prairie Fish Lake under Clean Water Act (NPDES) discharge permits.
- Camp Ripley - Area 22 WashrackLittle Falls · 2.2 mi away · NPDES MN0063070
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.
Graded lakes near Green Prairie Fish Lake
Green Prairie Fish Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Morrison County
Frequently asked questions about Green Prairie Fish Lake
What is the water quality grade for Green Prairie Fish Lake?
- Green Prairie Fish Lake in Morrison County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 8 ft visibility. Maximum depth: 22 ft. Surface area: 182.48 acres.
Is Green Prairie Fish Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Green Prairie Fish Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Green Prairie Fish Lake?
- Green Prairie Fish Lake typically sits around 76°F at the surface in August, from 79 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
How deep is Green Prairie Fish Lake?
- Green Prairie Fish Lake has a maximum depth of 22 feet. The lake covers 182.48 acres.
What fish are in Green Prairie Fish Lake?
- Fish species found in Green Prairie Fish Lake include black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, white sucker, yellow bullhead, yellow perch. Green Prairie Fish Lake is located in Morrison County, Minnesota.
When does Green Prairie Fish Lake thaw?
- Green Prairie Fish Lake typically has ice-out around Apr 16. Ice typically forms around Dec 1. The open water season is approximately 229 days.
Are there boat ramps on Green Prairie Fish Lake?
- Green Prairie Fish Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Green Prairie Fish Lake, Fletcher Creek. Public access is listed as yes.
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Where this data comes from
110 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA110 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory
Ice data from Minnesota DNR Climate