Lucy Lake
Carver County, Minnesota88 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Lucy Lake. Here is what has been measured.
- Eutrophic
- Impaired · Mercury
- Eurasian watermilfoil
- 20 ft max depth
Lucy Lake in Carver County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 62 µg/L. Chlorophyll-a (algae): 20.7 µg/L. Maximum depth: 20 ft. Surface area: 87.53 acres.
Minnesota DNR's Standard Survey on June 13, 2012 caught 17.33 northern pike per gill net at Lucy Lake. Length samples in the latest survey that recorded them ran 10–34 inches. DNR survey details →
Lucy Lake is a 88-acre productive, nutrient-rich eutrophic lake in Carver County, Minnesota with a maximum depth of 20 feet. Overall water quality is declining over recent sampling years. The lake supports 9 documented fish species including black bullhead, black crappie, and bluegill. No public access — the lake is private or restricted. Compared to the 37 other monitored lakes in Carver County, Lucy Lake ranks #15 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-15. Methodology: how these readings are compared.
What Lucy Lake is good for
From access and monitoring records, not editorial picks.
- Fishing9 species recorded
Swimming conditions
Readings onlyAlgae risk
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Lucy Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
Whether Lucy Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lucy Lake
These are the measurements Minnesota PCA publishes for Lucy Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 3.9 ft. Phosphorus 62 µg/L. Chlorophyll-a 20.7 µg/L. TSI 60.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 62µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 20.7µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 60 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lucy Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lucy Lake typically sits around 58°F at the surface in October. Summer average is about 69°F. Usually warmest in Jul (about 70°F) and coldest in Jan (about 37°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (37°F) to its warmest (70°F).
Typical surface water temperature by month, from 582 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lucy Lake water temperature breakdown →
Minnesota DNR's Standard Survey on June 13, 2012 caught 17.33 northern pike per gill net at Lucy Lake. Length samples in the latest survey that recorded them ran 10–34 inches.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lucy Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
3 surveys on file from MN DNR Fisheries. Most recent: 2012-06-13 (Standard Survey).
3 surveys on file · most recent 2012-06-13 (Standard Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 34.12 | 2–9 in 2012-06-13 | 0.2 lb |
| Pumpkinseed | 18.51 | 4–6 in 2012-06-13 | 0.09 lb |
| Yellow Bullhead | 7.30 | 5–13 in 2012-06-13 | 0.45 lb |
| Northern Pike | 6.54 | 10–34 in 2012-06-13 | 2.41 lb |
| Black Bullhead | 4.20 | 8–13 in 2012-06-13 | 0.67 lb |
| Hybrid Sunfish | 2.82 | 5–7 in 2012-06-13 | 0.25 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
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 Bullhead
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.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — LucyFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
20 ft
Surface area
88 acres
Shoreline
2.3 mi
Littoral zone
98%
Share shallower than 15 ft
Public access
No
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Elevation
945 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Lucy Lake
Compare lakeside cabins, hotels, and vacation rentals near Lucy Lake in Carver 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Lucy Lake are listed below.
Top-rated places to stay near Lucy Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
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Fish Species
Click a species to see every lake where it is documented.
Fishing Lucy 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.
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+6.69 µg/L/yr5 years
Chlorophyll-a
Worsening+3.11 µg/L/yr5 years
EPA Impairment Status
Lucy Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN10-0007-00 · Official waterbody report
Nearby Lakes in Carver County
Frequently asked questions about Lucy Lake
Where is Lucy Lake?
- Lucy Lake is a lake in Carver County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Lucy Lake?
- Lucy Lake in Carver County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3.9 ft visibility. Phosphorus: 62 µg/L. Chlorophyll-a (algae): 20.7 µg/L. Maximum depth: 20 ft. Surface area: 87.53 acres.
Is Lucy Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lucy Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.
What is the water temperature of Lucy Lake?
- Lucy Lake typically sits around 58°F at the surface in October, from 582 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
How deep is Lucy Lake?
- Lucy Lake has a maximum depth of 20 feet. The lake covers 87.53 acres.
What fish are in Lucy Lake?
- Fish species found in Lucy Lake include black bullhead, black crappie, bluegill, common carp, hybrid sunfish, northern pike, pumpkinseed, yellow bullhead, yellow perch. Lucy Lake is located in Carver County, Minnesota.
What did the DNR fisheries survey find at Lucy Lake?
- Minnesota DNR's Standard Survey on June 13, 2012 caught 17.33 northern pike per gill net at Lucy Lake. Length samples in the latest survey that recorded them ran 10–34 inches. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lucy Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Lucy Lake?
- Public access to Lucy Lake is listed as no on the lake record, so confirm before you make the trip. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Lucy Lake across LakeQuality
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Where this data comes from
295 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
MNPCA295 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- Phosphorus by Colorimetry
- Analysis of Chlorophyll in Periphyton and Plankton
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from 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