Unnamed Lake
Clark County, WisconsinLimited DataHypereutrophic
On the LakeGrade rubric Unnamed Lake fails the cutoffs — a TSI of 73 and persistent algal pressure put it in the bottom tier.
Hypereutrophic conditions mean the lake is operating at the upper end of the productivity scale, with all the bloom risk that implies. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake is compact at 7 acres, with partial shoreline records and little volume to buffer nutrient inputs. Among the 4 graded lakes in Clark County, Unnamed Lake ranks 1 — in the top quartile locally.
No invasive species are currently listed at Unnamed Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Unnamed Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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, Wisconsin DNR Surface Water, last sampled 2022-07-19. Grade methodology: LakeGrade methodology.
Track Unnamed Lake
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.3 ft of visibility. Trophic State Index: 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 7 acres |
Location
County Ranking
Ranked #1 of 4 lakes in Clark County
Cleaner Lakes Within 30 Miles
Unnamed Lake holds Grade F. 2 nearby lakes hold higher grades.
Nearby Lakes in Clark County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
Hypereutrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2022).
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-07-19
Monitoring stations: 1