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.
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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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.6 ft | D |
| Phosphorus | 62.5 µg/L | D |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Average Depth | 10 ft |
| Surface Area | 335.96 acres |
| Shoreline Length | 5.1 mi |
| Littoral Zone | 62% |
| Public Access | Yes |
Fish Species
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.
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.049 m/yr | 5 |
| Phosphorus | ↓ Declining | +1.2 µg/L/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (24 observations).
Estimated open water season: 231 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2007-03-01 (2007) | 2013-05-04 (2013) |
| Ice-In | 2018-11-10 (2018) | 2017-12-22 (2017) |
Most recent ice-out: 2024-03-14
Location
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.
- ALinka LakePope County · mi · Two grade letters higher (D → A)
- BScandinavian LakePope County · mi · Two grade letters higher (D → B)
- CNelson LakePope County · mi · Higher grade (D → C)
Nearby Lakes in Pope County
More Minnesota Lake Rankings
State Parks Near Gilchrist Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
12 surveys on file from MN DNR Fisheries. Most recent: 2023-07-10 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| IOD | 52.38 | — |
| Green Sunfish | 31.76 | 0.47 lb |
| Hybrid Sunfish | 25.72 | 0.28 lb |
| JND | 21.57 | — |
| Yellow Perch | 16.91 | 0.11 lb |
| BNS | 16.14 | — |
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
Hybrid Sunfish
Yellow Perch
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…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Gilchrist Lake. 3 reports on file.
- —Fisheries Lake Survey — GilchristFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — GilchristFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — GilchristPublic Water Access Sites · MN DNR LakeFinder
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
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