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C

Crow R Mill Pond

Kandiyohi County, MinnesotaEutrophic

Crow R Mill Pond earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Minnesota norms.

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. At only 14 ft deep, Crow R Mill Pond is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. At 2,290 acres, Crow R Mill Pond is one of the larger lakes in Kandiyohi County, with 37.8 miles of shoreline supporting multiple distinct use patterns. Crow R Mill Pond ranks 11 of 35 in Kandiyohi County — solidly in the upper half of the local distribution.

No invasive species are currently listed at Crow R Mill Pond — the lake remains off the Minnesota infested-waters roster. Walleye are documented at Crow R Mill Pond, one of 13 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. 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 2024-09-26. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 6 ft. Phosphorus level: 24 µg/L. Trophic State Index: 51.

MetricValueGrade
Water Clarity (Secchi Depth)6 ftD
Phosphorus24 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)51Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth14 ft
Average Depth3.8 ft
Surface Area2.3K acres
Shoreline Length37.8 mi
Littoral Zone99%
Public AccessYes

Fish Species

black bullhead,black crappie,bluegill,bowfin (dogfish),common carp,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 Crow R Mill Pond (14-day solunar calendar)

→ Is it safe to eat fish from Crow R Mill Pond? (mercury & PFAS guide)

Crow R Mill Pond fishing regulations (limits, seasons, special rules)

Water Quality Trend: Improving

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.143 m/yr5
Phosphorus Improving-1.2 µg/L/yr5
See year-by-year chart →

Location

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County Ranking

Ranked #11 of 35 lakes in Kandiyohi County

Cleaner Lakes Within 30 Miles

Crow R Mill Pond holds Grade C. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Kandiyohi County

DNR Fisheries Survey Summary

7 surveys on file from MN DNR Fisheries. Most recent: 2023-06-08 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Black Bullhead25.600.19 lb
Yellow Bass13.990.24 lb
Brown Bullhead11.440.28 lb
Pumpkinseed8.000.17 lb
Bluegill7.690.21 lb
Northern Pike5.731.59 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.

Black Bullhead

16 fish · 411 in · 2023-06-08
4204567891011

Yellow Bass

94 fish · 510 in · 2023-06-08
351805678910

Brown Bullhead

352 fish · 49 in · 2003-06-16
174870456789

Pumpkinseed

18 fish · 47 in · 2023-06-08
9504567

From the 2023-06-08 survey

A targeted trapnet survey of Middle Fork Crow Reservoir "MFCR", also known as Monongalia or Mud Lake, was conducted in early June of 2023. The purpose of the survey was to determine the extent of a partial winterkill in February/March of 2023. Four lake survey trapnets were set at standard stations. At least one…

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 Crow R Mill Pond. 4 reports on file.

Reservoir Info (USACE NID)

Crow R Mill Pond is a man-made reservoir impounded by the New London (completed 1864), built primarily for recreation on the Crow River Middle Fork; earth-type dam, 22 ft tall and 13 ft long.

Normal storage
7,025 ac-ft
Max storage
13,371 ac-ft
Drainage area
102 sq mi
Hazard class
High
Owner
MNDNR-Fisheries

Source: USACE National Inventory of Dams, NID ID MN00062 · Operator website · Matched by proximity (0.66 km)

EPA Impairment Status

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

Causes of impairment

Mercury

Source: EPA ATTAINS assessment unit MN34-0158-03 · Official waterbody report · Matched by proximity (0.04 km)

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

Most recent sample: 2024-09-26

Monitoring stations: 1