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D

Gilchrist Lake

Pope County, MinnesotaEutrophic

Gilchrist Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Minnesota average. The two scored sub-grades — clarity and phosphorus — track close together, so neither one is dragging the average down.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. Gilchrist Lake reaches 24 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 336 acres, Gilchrist Lake fits the Minnesota median for monitored lakes, with 5.1 miles of shoreline. Within Pope County's 25 graded lakes, Gilchrist Lake ranks 18 — below the local median, though not at the bottom.

Zebra mussel presence at Gilchrist Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The fishery includes walleye among the lake's 15 documented species — a notable draw for Minnesota anglers. Public access is available — the lake is on the Minnesota PCA public-access list. The lake has a partial ice record — 16 observed ice-outs, centered near Apr 10. 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 2024-09-15. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 3.6 ft. Phosphorus level: 62.5 µg/L. Trophic State Index: 61.

MetricValueGrade
Water Clarity (Secchi Depth)3.6 ftD
Phosphorus62.5 µg/LD
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)61Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth24 ft
Average Depth10 ft
Surface Area335.96 acres
Shoreline Length5.1 mi
Littoral Zone62%
Public AccessYes

Fish Species

black bullhead,black crappie,bluegill,bowfin (dogfish),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 Gilchrist Lake (14-day solunar calendar)

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

Gilchrist 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 watermilfoilzebra mussel

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Declining-0.049 m/yr5
Phosphorus Declining+1.2 µg/L/yr5
See year-by-year chart →

Ice Season

Historical ice data from Minnesota DNR (24 observations).

Typical Ice-Out
Apr 10
Typical Ice-In
Nov 27

Estimated open water season: 231 days

EarliestLatest
Ice-Out2007-03-01 (2007)2013-05-04 (2013)
Ice-In2018-11-10 (2018)2017-12-22 (2017)

Most recent ice-out: 2024-03-14

Location

Loading map…

County Ranking

Ranked #18 of 25 lakes in Pope County

Cleaner Lakes Within 30 Miles

Gilchrist Lake holds Grade D. 3 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Pope County

DNR Fisheries Survey Summary

12 surveys on file from MN DNR Fisheries. Most recent: 2023-07-10 (Standard Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
IOD52.38
Green Sunfish31.760.47 lb
Hybrid Sunfish25.720.28 lb
JND21.57
Yellow Perch16.910.11 lb
BNS16.14

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.

Green Sunfish

2 fish · 57 in · 1996-07-08
10567

Hybrid Sunfish

2 fish · 78 in · 2023-07-10
1078

Yellow Perch

28 fish · 56 in · 2023-07-10
2111056

From the 2023-07-10 survey

Lake Gilchrist is a shallow 321-acre basin located in southeast Pope County. Maximum depth is 24.0 feet. Approximately 61% of the surface area is less than 15.0 feet in depth. The East Branch of the Chippewa River runs through the basin. Water quality and habitat conditions are variable in response to a large…

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 Gilchrist Lake. 3 reports on file.

EPA Impairment Status

Gilchrist Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

MercuryNutrients (phosphorus, nitrogen)

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

Source: EPA ATTAINS assessment unit MN61-0072-00 · 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: 2024-09-15

Monitoring stations: 3