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LakeQuality
C

Bryant Lake

Hennepin County, MinnesotaMesotrophic

Bryant Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI near 50 places Bryant Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Bryant Lake reaches 45 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 180 acres, Bryant Lake fits the Minnesota median for monitored lakes, with 3.4 miles of shoreline. Among the 95 graded lakes in Hennepin County, Bryant Lake ranks 14 — in the top quartile locally.

Zebra mussel presence at Bryant Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The fishery includes walleye alongside the lake's other 11 documented species — a notable draw for Minnesota anglers. 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 2023-10-10. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Moderate clarity, visible to about 9.8 ft. Phosphorus level: 35 µg/L. Trophic State Index: 50.

MetricValueGrade
Water Clarity (Secchi Depth)9.8 ftC
Phosphorus35 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)50Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth45 ft
Surface Area179.94 acres
Shoreline Length3.4 mi
Littoral Zone36%
Public AccessYes

Fish Species

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

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

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

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

Invasive Species

Eurasian watermilfoilbrittle naiadzebra mussel

Water Quality Trend: Improving

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.145 m/yr4
Phosphorus Improving-1.77 µg/L/yr4

Location

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County Ranking

Ranked #14 of 95 lakes in Hennepin County

Nearby Lakes in Hennepin County

DNR Fisheries Survey Summary

10 surveys on file from MN DNR Fisheries. Most recent: 2023-08-21 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Bluegill46.960.12 lb
Bluntnose Minnow11.08
Largemouth Bass9.171.02 lb
Black Crappie8.840.17 lb
Black Bullhead8.410.39 lb
Yellow Perch6.200.11 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

227 fish · 36 in · 2023-08-21
1015103456

Largemouth Bass

4 fish · 417 in · 2023-08-21
104567891011121314151617

Black Crappie

91 fish · 511 in · 2022-07-18
37190trophy 10567891011

Black Bullhead

4 fish · 67 in · 2012-07-16
32067

From the 2023-08-21 survey

A targeted survey of nearshore fish species in Bryant Lake was conducted on August 21-22, 2023, by Index of Biological Integrity (IBI) Program staff. Sampling sites were evenly spaced around the lake, and each was sampled by backpack electrofishing and seining with a 50-foot or 15-foot seine, where possible. Backpack…

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 Bryant 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: 2023-10-10

Monitoring stations: 1