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LakeQuality
B

Unnamed Rusk Co -Deep Hole Lake

Rusk County, WisconsinMesotrophic

On the LakeGrade scale Unnamed Rusk Co -Deep Hole Lake grades a B, with clarity at 18.6 ft and 31 µg/L of phosphorus placing it above the Wisconsin median. High phosphorus is the leading drag on the score — likely from upland agriculture, lawn runoff, or in-lake sediment release.

Mesotrophic conditions dominate at Unnamed Rusk Co -Deep Hole Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. Unnamed Rusk Co -Deep Hole Lake reaches 16 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. Unnamed Rusk Co -Deep Hole Lake is small — 7 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Unnamed Rusk Co -Deep Hole Lake ranks 10 of 13 in Rusk County — at the lower end of the locally monitored distribution.

Unnamed Rusk Co -Deep Hole Lake has no invasive species recorded in Wisconsin state databases as of 2022, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Unnamed Rusk Co -Deep Hole 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 2022-08-30. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Crystal clear, you can see 18.6 ft down. Phosphorus level: 30.5 µg/L. Trophic State Index: 44.

MetricValueGrade
Water Clarity (Secchi Depth)18.6 ftA
Phosphorus30.5 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)44Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth16 ft
Surface Area7 acres

Water Quality Trend: Declining

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.397 m/yr2
See year-by-year chart →

Location

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County Ranking

Ranked #10 of 13 lakes in Rusk County

Cleaner Lakes Within 30 Miles

Unnamed Rusk Co -Deep Hole Lake holds Grade B. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Rusk County

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

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2022-08-30

Monitoring stations: 1