Eagle Lake
Hennepin County, MinnesotaEutrophic
Eagle Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Minnesota average. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.
At a TSI of 63, Eagle Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. The lake bottoms out at 34 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. At 296 acres, Eagle Lake fits the Minnesota median for monitored lakes, with 5.1 miles of shoreline. Within Hennepin County's 95 graded lakes, Eagle Lake ranks 53 — below the local median, though not at the bottom.
Eurasian watermilfoil has been documented at Eagle Lake, requiring shoreline management to keep dense mats from crowding native vegetation. Eagle Lake's fishery is anchored by muskellunge, with 17 documented species in total — a destination water for muskie anglers. A documented public access point at Eagle Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been recorded 9 times at Eagle Lake, with a median around Mar 29. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-14. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 3 ft of visibility. Phosphorus level: 61.5 µg/L. Trophic State Index: 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | F |
| Phosphorus | 61.5 µg/L | D |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 34 ft |
| Average Depth | 10.7 ft |
| Surface Area | 296.2 acres |
| Shoreline Length | 5.1 mi |
| Littoral Zone | 67% |
| 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 Species
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.074 m/yr | 5 |
| Phosphorus | ↓ Declining | +6.93 µg/L/yr | 4 |
Ice Season
Historical ice data from Minnesota DNR (17 observations).
Estimated open water season: 248 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-04 (2024) | 2018-04-30 (2018) |
| Ice-In | 2018-11-13 (2018) | 2007-01-14 (2007) |
Most recent ice-out: 2026-03-28
Location
County Ranking
Ranked #53 of 95 lakes in Hennepin County
Cleaner Lakes Within 30 Miles
Eagle Lake holds Grade D. 5 nearby lakes hold higher grades.
- BPomerleau LakeHennepin County · 2.7 mi · Two grade letters higher (D → B)
- BMagda LakeHennepin County · 0.8 mi · Two grade letters higher (D → B)
- CBass LakeHennepin County · 1.1 mi · Higher grade (D → C)
- CSchmidt LakeHennepin County · 2.2 mi · Higher grade (D → C)
- DMeadow LakeHennepin County · 1.5 mi · Higher overall water quality score
Nearby Lakes in Hennepin County
More Minnesota Lake Rankings
State Parks Near Eagle Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
15 surveys on file from MN DNR Fisheries. Most recent: 2025-06-30 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| BNS | 56.00 | — |
| Bluegill | 33.93 | 0.14 lb |
| Black Crappie | 13.03 | 0.17 lb |
| Yellow Perch | 12.68 | 0.1 lb |
| Black Bullhead | 8.25 | 0.34 lb |
| Largemouth Bass | 7.43 | 0.73 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
Black Crappie
Yellow Perch
Black Bullhead
From the 2025-06-30 survey
Eagle Lake is a 291-acre lake with a maximum depth of 34 feet. It is located in north central Hennepin County, in the city of Maple Grove. There is a DNR-owned public access on the northeast corner of the lake. Eagle Lake is actively managed for Muskellunge and Walleye, which are stocked to maintain the populations.…
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
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate
Most recent sample: 2024-10-14
Monitoring stations: 4