Eagle Lake
Kandiyohi County, MinnesotaMesotrophic
Eagle Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Secchi readings are the weakest of the scored parameters, suggesting suspended sediment or algal biomass dominates the optical signal.
A TSI near 50 places Eagle Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. The lake's 67 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. Eagle Lake covers 849 acres alongside 5.0 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Eagle Lake ranks 9 of 35 in Kandiyohi County — solidly in the upper half of the local distribution.
Zebra mussel presence at Eagle Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The fishery includes walleye among the lake's 17 documented species — a notable draw for Minnesota anglers. Public access is available — the lake is on the Minnesota PCA public-access list. The lake has a partial ice record — 13 observed ice-outs, centered near Apr 6. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 6.4 ft. Phosphorus level: 23 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.4 ft | D |
| Phosphorus | 23 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 67 ft |
| Surface Area | 849.47 acres |
| Shoreline Length | 5 mi |
| Littoral Zone | 32% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Eagle Lake (14-day solunar calendar)
→ Is it safe to eat fish from Eagle Lake? (mercury & PFAS guide)
→ Eagle Lake fishing regulations (limits, seasons, special rules)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.135 m/yr | 5 |
| Phosphorus | → Stable | -0.05 µg/L/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (20 observations).
Estimated open water season: 244 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2017-03-08 (2017) | 2018-05-01 (2018) |
| Ice-In | 2002-11-24 (2002) | 2024-01-07 (2024) |
Most recent ice-out: 2020-04-03
Location
County Ranking
Ranked #9 of 35 lakes in Kandiyohi County
Cleaner Lakes Within 30 Miles
Eagle Lake holds Grade C. 4 nearby lakes hold higher grades.
- AGeorge LakeKandiyohi County · mi · Two grade letters higher (C → A)
- AHenderson LakeKandiyohi County · mi · Two grade letters higher (C → A)
- AElkhorn LakeKandiyohi County · mi · Two grade letters higher (C → A)
- BFlorida LakeKandiyohi County · mi · Higher grade (C → B)
Nearby Lakes in Kandiyohi County
More Minnesota Lake Rankings
State Parks Near Eagle Lake
Other Grade C Lakes in Minnesota
Mesotrophic Lakes in Minnesota
Compare Eagle Lake With Nearby Lakes
DNR Fisheries Survey Summary
19 surveys on file from MN DNR Fisheries. Most recent: 2025-07-07 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluntnose Minnow | 150.13 | — |
| Spottail Shiner | 63.13 | — |
| Bluegill | 44.47 | 0.16 lb |
| BKF | 33.89 | — |
| IOD | 28.75 | — |
| Yellow Perch | 22.74 | 0.11 lb |
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 2025-07-07 survey
A standard survey of Eagle Lake was conducted during early-July of 2025. A fall night electrofishing survey was conducted for young of year "YOY" (fingerling sized) Walleye in early October of 2025. A targeted survey is generally used for sampling a specific kind of fish or time of year (i.e. spawning season, fall…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Eagle Lake. 3 reports on file.
- —Fisheries Lake Survey — EagleFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — EagleFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — EaglePublic Water Access Sites · MN DNR LakeFinder
Reservoir Info (USACE NID)
Eagle Lake is a man-made reservoir impounded by the Eagle Lake (completed 1941), built primarily for fish and wildlife pond on the Hawk Creek; earth-type dam, 7 ft tall.
- Surface area
- 819 ac
- Normal storage
- 1,638 ac-ft
- Max storage
- 25,000 ac-ft
- Drainage area
- 17.8 sq mi
- Hazard class
- Low
- Owner
- MNDNR-Fisheries
Source: USACE National Inventory of Dams, NID ID MN01153 · Operator website
EPA Impairment Status
Eagle Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN34-0171-00 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate
Most recent sample: 2024-09-27
Monitoring stations: 2