Sebie Lake
Crow Wing County, MinnesotaEutrophic
Sebie 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 in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. Sebie Lake reaches 27 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 185 acres, Sebie Lake fits the Minnesota median for monitored lakes, with 2.3 miles of shoreline. Within the 120 graded lakes of Crow Wing County, Sebie Lake sits at rank 113, near the bottom of the county list.
No invasive species are currently listed at Sebie Lake — the lake remains off the Minnesota infested-waters roster. Walleye are documented at Sebie Lake, one of 15 fish species on record for the lake. A documented public access point at Sebie Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been recorded 6 times at Sebie Lake, with a median around Apr 5. 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 2024-08-13. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 3.9 ft. Phosphorus level: 38 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.9 ft | D |
| Phosphorus | 38 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 27 ft |
| Surface Area | 185.31 acres |
| Shoreline Length | 2.3 mi |
| Littoral Zone | 63% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Sebie Lake (14-day solunar calendar)
→ Is it safe to eat fish from Sebie Lake? (mercury & PFAS guide)
→ Sebie Lake fishing regulations (limits, seasons, special rules)
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.1 m/yr | 5 |
| Phosphorus | ↓ Declining | +2.8 µg/L/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (7 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-06 (2024) | 2022-04-24 (2022) |
| Ice-In | 2018-11-11 (2018) | 2018-11-11 (2018) |
Most recent ice-out: 2024-03-06
Location
County Ranking
Ranked #113 of 120 lakes in Crow Wing County
Nearby Lakes in Crow Wing County
More Minnesota Lake Rankings
State Parks Near Sebie Lake
Other Grade C Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
6 surveys on file from MN DNR Fisheries. Most recent: 2025-09-03 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 30.14 | 0.18 lb |
| Pumpkinseed | 10.52 | 0.15 lb |
| Yellow Perch | 5.45 | 0.12 lb |
| CNM | 5.39 | — |
| Northern Pike | 4.55 | 2.38 lb |
| Green Sunfish | 4.54 | — |
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
Pumpkinseed
Yellow Perch
Northern Pike
From the 2025-09-03 survey
A summer trap net survey was conducted in Sebie Lake by Lake Biological Monitoring and Assessment program staff on September 3-4, 2025. Nine trap nets were set along the shoreline in locations that encompassed multiple habitat types. Trap net sampling captured ten species of fish. Bluegill comprised a majority of the…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Sebie Lake. 3 reports on file.
- —Fisheries Lake Survey — SebieFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Sebie (0007)Aquatic Plant Report · MN DNR LakeFinder
- —Public Water Access Sites — SebiePublic Water Access Sites · MN DNR LakeFinder
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate
Most recent sample: 2024-08-13
Monitoring stations: 1