Eunice Lake
Eunice Lake in Becker County, Minnesota has a water quality grade of A (Excellent). Water clarity: 13.5 ft visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Maximum depth: 30 ft. Surface area: 378.45 acres.
- Clarity
- 13.5 ft
- Max depth
- 30 ft
- Area
- 378 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
- Public access
- Yes
- Ice-out
- Apr 22
- Open water
- 214 days
Next lake in Becker County
Eunice Lake is a 378-acre mesotrophic lake in Becker County, Minnesota with a maximum depth of 30 feet. Water quality is graded A based on 2 sampling years through 2025. Overall water quality is improving over recent sampling years. The lake supports 17 documented fish species including black bullhead, black crappie, and bluegill. Public access is available. Compared to the 83 other monitored lakes in Becker County, Eunice Lake ranks #36 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-24. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A (Excellent)
Good clarity, visible to about 13.5 ft. Phosphorus level: 11 µg/L. Chlorophyll-a: 3.2 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.5 ft | Not graded |
| Phosphorus | 11 µg/L | Good |
| Chlorophyll-a (Algae) | 3.2 µg/L | Good |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Eunice Lake
Compare lakeside cabins, hotels, and vacation rentals near Eunice Lake in Becker 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 30 ft |
| Surface Area | 378 acres |
| Shoreline Length | 3.4 mi |
| Littoral Zone | 49% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Eunice 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.
DNR Fisheries Survey Summary
12 surveys on file from MN DNR Fisheries. Most recent: 2025-05-22 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| BNS | 602.68 | — |
| Bluegill | 29.69 | 0.21 lb |
| Yellow Perch | 24.77 | 0.28 lb |
| BKF | 21.78 | — |
| IOD | 19.01 | — |
| Bluntnose Minnow | 17.60 | — |
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
Yellow Perch
From the 2025-05-22 survey
Lake Eunice is a 325-acre, Class-31 lake located in Becker County eleven miles southwest of Detroit Lakes. Lake Eunice is positioned directly southeast of Maud Lake, separated by County Highway 22. The lake's shoreline is highly developed and extensive bulrush and emergent vegetation removal has occurred in the last…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Eunice Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — EuniceFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Eunice (1183)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — EuniceFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — EunicePublic Water Access Sites · MN DNR LakeFinder
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.05 m/yr | 6 |
| Phosphorus | → Stable | +0.14 µg/L/yr | 6 |
| Chlorophyll-a | ↑ Improving | -0.09 µg/L/yr | 6 |
Ice Season
Historical ice data from Minnesota DNR (14 observations).
Estimated open water season: 214 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2012-03-23 (2012) | 2013-05-10 (2013) |
| Ice-In | 2002-11-12 (2002) | 2009-12-04 (2009) |
Most recent ice-out: 2013-05-10
EPA Impairment Status
Eunice 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 MN03-0500-00 · Official waterbody report · Matched by proximity (1.94 km)
County Ranking
Ranked #36 of 84 lakes in Becker County
Nearby Lakes in Becker County
Frequently asked questions about Eunice Lake
What is the water quality grade for Eunice Lake?
- Eunice Lake in Becker County, Minnesota has a water quality grade of A (Excellent). Water clarity: 13.5 ft visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Maximum depth: 30 ft. Surface area: 378.45 acres.
Is Eunice Lake safe to swim in?
- Excellent for swimming, crystal clear water with minimal algae. Eunice Lake has a water quality grade of A (Excellent). Algae concentration (chlorophyll-a) is 3.2 µg/L. Always check local health department advisories before swimming.
How deep is Eunice Lake?
- Eunice Lake has a maximum depth of 30 feet. The lake covers 378.45 acres.
What fish are in Eunice Lake?
- Fish species found in Eunice Lake include black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, common carp, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, tullibee (cisco), walleye, white sucker, yellow bullhead, yellow perch. Eunice Lake is located in Becker County, Minnesota.
When does Eunice Lake thaw?
- Eunice Lake typically has ice-out around Apr 22. Ice typically forms around Nov 22. The open water season is approximately 214 days.
Explore Eunice Lake across LakeGrade
Depth, room, public access, and the state wake-sport rules
Fish species and top-graded lakes across Minnesota
Fish species and best lakes in Becker County
Species activity outlook by water temperature and season
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Moderate nutrients, good water quality
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State Parks Near Eunice Lake
Other Grade A Lakes in Minnesota
Mesotrophic Lakes in Minnesota
Where this data comes from
56 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
MNPCA56 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 (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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate