Kek Lake
Lake County, MinnesotaLimited DataOligotrophic
On the LakeGrade rubric, Kek Lake pulls an A: clarity at 19.5 ft and phosphorus readings still being added put it in the top bracket for Minnesota.
The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. At 130 ft of maximum depth, Kek Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. The lake is compact at 55 acres, with 1.3 miles of shoreline and little volume to buffer nutrient inputs. Among the 142 graded lakes in Lake County, Kek Lake ranks 18 — in the top quartile locally.
Kek Lake has no invasive species recorded in Minnesota state databases as of 2022, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Kek Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Kek Lake — most use is by shoreline residents and their guests. 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 2022-06-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 19.5 ft down. Trophic State Index: 34.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 19.5 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 34 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 130 ft |
| Surface Area | 54.91 acres |
| Shoreline Length | 1.3 mi |
| Littoral Zone | 11% |
| Public Access | No |
Water Quality Trend: ↓ Declining
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.189 m/yr | 4 |
Location
County Ranking
Ranked #18 of 142 lakes in Lake County
Nearby Lakes in Lake County
More Minnesota Lake Rankings
Other Grade A Lakes in Minnesota
Oligotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 1988-09-14 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Lake Trout | 18.00 | 0.98 lb |
| White Sucker | 5.00 | 0.88 lb |
| Yellow Perch | 2.00 | 0.1 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
From the 1988-09-14 survey
A deep water gillnet set shows lake trout and white sucker are present in above average numbers. Yellow perch are also present. Lake trout natural reproduction is good; three of eight trout captured were under 12 18 tile lake
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Kek Lake. 1 report on file.
- —Fisheries Lake Survey — KekFisheries Lake Survey · MN DNR LakeFinder
EPA Impairment Status
Kek Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MN38-0226-00 · Official waterbody report · Matched by proximity (0.79 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: 2022-06-14
Monitoring stations: 1