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LakeQuality
C

Crawford Lake

Wright County, MinnesotaMesotrophic

Crawford Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

Mesotrophic conditions dominate at Crawford Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. Crawford Lake reaches 19 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. Crawford Lake covers 110 acres alongside 1.9 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Crawford Lake ranks 27 of 64 in Wright County — solidly in the upper half of the local distribution.

Crawford Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. Walleye are documented at Crawford Lake, one of 12 fish species on record for the lake. A documented public access point at Crawford Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-14. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 5.9 ft. Phosphorus level: 21.5 µg/L. Trophic State Index: 50.

MetricValueGrade
Water Clarity (Secchi Depth)5.9 ftD
Phosphorus21.5 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)50Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth19 ft
Average Depth3.6 ft
Surface Area110.43 acres
Shoreline Length1.9 mi
Littoral Zone97%
Public AccessYes

Fish Species

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

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

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

Crawford Lake fishing regulations (limits, seasons, special rules)

Water Quality Trend: Improving

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.9 m/yr2
Phosphorus Improving-0.5 µg/L/yr2

Location

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County Ranking

Ranked #27 of 64 lakes in Wright County

Nearby Lakes in Wright County

State Parks Near Crawford Lake

DNR Fisheries Survey Summary

8 surveys on file from MN DNR Fisheries. Most recent: 2021-07-06 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Largemouth Bass57.360.71 lb
Bluegill31.510.1 lb
Green Sunfish24.560.09 lb
Black Bullhead23.700.36 lb
Hybrid Sunfish13.220.12 lb
Pumpkinseed12.030.12 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.

Largemouth Bass

86 fish · 513 in · 2021-07-06
341705678910111213

Bluegill

461 fish · 37 in · 2021-07-06
18794034567

Green Sunfish

1 fish · 55 in · 2019-06-14
105

Black Bullhead

64 fish · 810 in · 2021-07-06
392008910

From the 2021-07-06 survey

Crawford Lake is a 109 acre lake located five miles south of the city of Buffalo in Wright County. The lake is shallow (max. depth of 19 feet) with a history of winterkill. The lake was reclaimed using rotenone in 1998, but not all bullheads were killed. An aeration system was purchased and has been used since 2001 to…

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 Crawford Lake. 3 reports on file.

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: 2024-09-14

Monitoring stations: 1