Lost Lake
Hubbard County, MinnesotaLimited DataMesotrophic
Lost Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year.
Mesotrophic conditions dominate at Lost Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. 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. Lost Lake ranks 70 of 76 in Hubbard County — at the lower end of the locally monitored distribution.
Lost 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 Lost Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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 2022-09-13. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 8 ft. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Location
County Ranking
Ranked #70 of 76 lakes in Hubbard County
Cleaner Lakes Within 30 Miles
Lost Lake holds Grade C. 5 nearby lakes hold higher grades.
- AOzawindib LakeClearwater County · mi · Two grade letters higher (C → A)
- AHattie LakeHubbard County · mi · Two grade letters higher (C → A)
- ABig Lasalle LakeClearwater County · mi · Two grade letters higher (C → A)
- AElk LakeClearwater County · mi · Two grade letters higher (C → A)
- BAlice LakeHubbard County · mi · Higher grade (C → B)
Nearby Lakes in Hubbard County
More Minnesota Lake Rankings
State Parks Near Lost Lake
Other Grade C Lakes in Minnesota
Mesotrophic Lakes in Minnesota
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-13
Monitoring stations: 1