Hanging Horn Lake
Carlton County, MinnesotaLimited DataEutrophic
On the scoring rubric Hanging Horn Lake grades a D: clarity at 6.0 ft and phosphorus readings still being added keep it in the lower bracket for Carlton County. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.
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. The lake's 80 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. The lake's 409 acres and 4.6 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Within the 33 graded lakes of Carlton County, Hanging Horn Lake sits at rank 31, near the bottom of the county list.
Hanging Horn Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery includes walleye alongside the lake's other 11 documented species — a notable draw for Minnesota anglers. A documented public access point at Hanging Horn Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 5 observed ice-outs, centered near Apr 23. 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 2023-07-09. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 6 ft. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 80 ft |
| Surface Area | 408.66 acres |
| Shoreline Length | 4.6 mi |
| Littoral Zone | 21% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Hanging Horn Lake (14-day solunar calendar)
→ Is it safe to eat fish from Hanging Horn Lake? (mercury & PFAS guide)
→ Hanging Horn Lake fishing regulations (limits, seasons, special rules)
Invasive Species
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.716 m/yr | 4 |
Ice Season
Historical ice data from Minnesota DNR (10 observations).
Estimated open water season: 222 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2005-04-14 (2005) | 2022-05-04 (2022) |
| Ice-In | 1991-11-25 (1991) | 2004-12-03 (2004) |
Most recent ice-out: 2022-05-04
Location
County Ranking
Ranked #31 of 33 lakes in Carlton County
Nearby Lakes in Carlton County
More Minnesota Lake Rankings
State Parks Near Hanging Horn Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
7 surveys on file from MN DNR Fisheries. Most recent: 2020-07-20 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Tullibee (Cisco) | 43.74 | 0.4 lb |
| Bluntnose Minnow | 20.29 | — |
| JND | 7.63 | — |
| Bluegill | 6.75 | 0.21 lb |
| Yellow Perch | 3.14 | 0.14 lb |
| MTS | 3.02 | — |
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.
Tullibee (Cisco)
Bluegill
Yellow Perch
From the 2020-07-20 survey
Hanging Horn was surveyed during the summer of 2020 to evaluate and update information about fish populations, and to evaluate the effectiveness of the Rainbow Trout and Brown Trout stocking programs. Rainbow Trout and Brown Trout are the primary species of management for Hanging Horn Lake. Just over 19,500 yearling…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Hanging Horn Lake. 4 reports on file.
- —Fisheries Lake Survey — Hanging HornFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Hanging Horn (0271)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — Hanging HornFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — Hanging HornPublic 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: 2023-07-09
Monitoring stations: 1