Hoff Lake
Pope County, MinnesotaLimited DataEutrophic
On the scoring rubric Hoff Lake grades a D: clarity at 6.0 ft and phosphorus readings still being added keep it in the lower bracket for Pope County.
At a TSI of 51, Hoff Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Hoff Lake ranks 19 of 25 in Pope County — at the lower end of the locally monitored distribution.
No invasive species are currently listed at Hoff Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Hoff Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Hoff Lake — most use is by shoreline residents and their guests. 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 2023-09-18. 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 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
Water Quality Trend: → Stable
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.026 m/yr | 3 |
Location
County Ranking
Ranked #19 of 25 lakes in Pope County
Cleaner Lakes Within 30 Miles
Hoff Lake holds Grade D. 4 nearby lakes hold higher grades.
Nearby Lakes in Pope County
More Minnesota Lake Rankings
State Parks Near Hoff Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
EPA Impairment Status
Hoff 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 MN61-0106-00 · Official waterbody report · Matched by proximity (2.04 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
Most recent sample: 2023-09-18
Monitoring stations: 1