Lucy Lake
Carver County, MinnesotaEutrophic
Lucy Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.
A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. Lucy Lake reaches 20 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 88 acres, Lucy Lake sits below the Minnesota median: a small water where shoreline activity has an outsized effect on water quality. Lucy Lake ranks 17 of 40 in Carver County — solidly in the upper half of the local distribution.
Eurasian watermilfoil is established at Lucy Lake, which can dampen recreational access and pressure the native plant community. The fishery is panfish-dominated — bluegill, crappie, and sunfish among the 9 species documented for the lake. No formal public access is documented at Lucy Lake — most use is by shoreline residents and their guests. 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 2023-09-13. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 5.6 ft. Phosphorus level: 46 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.6 ft | D |
| Phosphorus | 46 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 20 ft |
| Surface Area | 87.53 acres |
| Shoreline Length | 2.3 mi |
| Littoral Zone | 98% |
| Public Access | No |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Lucy Lake (14-day solunar calendar)
→ Is it safe to eat fish from Lucy Lake? (mercury & PFAS guide)
→ Lucy Lake fishing regulations (limits, seasons, special rules)
Invasive Species
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.024 m/yr | 5 |
| Phosphorus | ↑ Improving | -2.57 µg/L/yr | 3 |
Location
County Ranking
Ranked #17 of 40 lakes in Carver County
Nearby Lakes in Carver County
More Minnesota Lake Rankings
State Parks Near Lucy Lake
Other Grade C Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
3 surveys on file from MN DNR Fisheries. Most recent: 2012-06-13 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 34.12 | 0.2 lb |
| Pumpkinseed | 18.51 | 0.09 lb |
| Yellow Bass | 7.30 | 0.45 lb |
| Northern Pike | 6.54 | 2.41 lb |
| Black Bullhead | 4.20 | 0.67 lb |
| Hybrid Sunfish | 2.82 | 0.25 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
Pumpkinseed
Yellow Bass
Northern Pike
From the 2012-06-13 survey
Lucy is a small, productive, 92-acre lake located in Chanhassen, Carver County. The lake has been subject to periodic partial winterkills, and, as a result, fish populations have fluctuated, at times dramatically. Most recently, oxygen was low enough in the winter of 2010-11 to induce another partial winterkill.…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lucy Lake. 1 report on file.
- —Fisheries Lake Survey — LucyFisheries Lake Survey · 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
Most recent sample: 2023-09-13
Monitoring stations: 1