Skip to main content
LakeQuality
C

Lotus Lake

Carver County, MinnesotaEutrophic

Lotus Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. With clarity and phosphorus scored, the sub-grades cluster within a letter of each other, pointing to stable conditions rather than one specific stressor.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. The lake bottoms out at 29 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. Lotus Lake covers 245 acres alongside 4.8 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Among the 40 graded lakes in Carver County, Lotus Lake sits at rank 15, above the county median.

Zebra mussel presence at Lotus Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. Walleye are documented at Lotus Lake, one of 13 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. Ice-out has been recorded 20 times at Lotus Lake, with a median around Apr 4. 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 2023-09-11. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

Track Lotus Lake

Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 4.3 ft. Phosphorus level: 42 µg/L. Trophic State Index: 57.

MetricValueGrade
Water Clarity (Secchi Depth)4.3 ftD
Phosphorus42 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)57Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth29 ft
Surface Area245.1 acres
Shoreline Length4.8 mi
Littoral Zone74%
Public AccessYes

Fish Species

black crappie,bluegill,brown bullhead,common carp,green sunfish,hybrid sunfish,largemouth bass,northern pike,pumpkinseed,walleye,white sucker,yellow bullhead,yellow perch

Click a species to see all Minnesota and Wisconsin lakes where it is found.

→ Best fishing times for Lotus Lake (14-day solunar calendar)

→ Is it safe to eat fish from Lotus Lake? (mercury & PFAS guide)

Lotus 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.

Eurasian watermilfoilbrittle naiadzebra mussel

Water Quality Trend: Improving

Based on 3 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.304 m/yr3
Phosphorus Improving-2.54 µg/L/yr3

Ice Season

Historical ice data from Minnesota DNR (31 observations).

Typical Ice-Out
Apr 4
Typical Ice-In
Dec 1

Estimated open water season: 241 days

EarliestLatest
Ice-Out2024-03-03 (2024)2018-05-01 (2018)
Ice-In2018-11-13 (2018)2021-12-08 (2021)

Most recent ice-out: 2026-03-30

Location

Loading map…

County Ranking

Ranked #15 of 40 lakes in Carver County

Cleaner Lakes Within 30 Miles

Lotus Lake holds Grade C. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Carver County

DNR Fisheries Survey Summary

11 surveys on file from MN DNR Fisheries. Most recent: 2025-06-30 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill80.410.15 lb
SFS62.00
Bluntnose Minnow40.72
Largemouth Bass31.511.09 lb
Yellow Perch16.950.11 lb
Northern Pike8.945.13 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

2,087 fish · 38 in · 2025-06-30
5512760345678

Largemouth Bass

11 fish · 516 in · 2025-06-30
3205678910111213141516

Yellow Perch

57 fish · 47 in · 2025-06-30
392004567

Northern Pike

27 fish · 2032 in · 2025-06-30
42020212223242526272829303132

From the 2025-06-30 survey

Lotus is a 245-acre (182 littoral acres) lake with a maximum depth of 29 feet. Lotus is located north of Chanhassen in northeastern Carver County. Lotus is primarily managed for Walleye and Largemouth Bass but also supports catchable populations of Bluegill, Black Crappie, and Northern Pike. Walleye fingerlings are…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lotus Lake. 3 reports on file.

EPA Impairment Status

Lotus Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Impaired biota (cause unknown)MercuryNutrients (phosphorus, nitrogen)

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN10-0006-00 · 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: 2023-09-11

Monitoring stations: 1