Voltz Lake
Kenosha County, WisconsinLimited DataMesotrophic
Voltz Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade.
The lake sits in the mesotrophic zone — the band where most well-managed Wisconsin lakes fall. A maximum depth of 24 ft puts Voltz Lake in the middle of Wisconsin's depth distribution. The lake is compact at 61 acres, with partial shoreline records and little volume to buffer nutrient inputs. Voltz Lake sits at rank 9 of 13 in Kenosha County, in the lower half of the local distribution.
Eurasian watermilfoil has been documented at Voltz Lake, requiring shoreline management to keep dense mats from crowding native vegetation. The fishery is bass-led, with 4 documented species across the lake's records. 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, Wisconsin DNR Surface Water, last sampled 2021-07-22. 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 9.3 ft. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.3 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Surface Area | 61 acres |
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Voltz Lake (14-day solunar calendar)
→ Is it safe to eat fish from Voltz Lake? (mercury & PFAS guide)
→ Voltz Lake fishing regulations (limits, seasons, special rules)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.337 m/yr | 5 |
| Phosphorus | ↑ Improving | -8.88 µg/L/yr | 4 |
Location
County Ranking
Ranked #9 of 13 lakes in Kenosha County
Cleaner Lakes Within 30 Miles
Voltz Lake holds Grade C. 2 nearby lakes hold higher grades.
Nearby Lakes in Kenosha County
More Wisconsin Lake Rankings
State Parks Near Voltz Lake
Other Grade C Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2021).
Fish Species (DNR-rated)
EPA Impairment Status
Voltz Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5R).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10000521 · Official waterbody report · Matched by proximity (1.01 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: 2021-07-22
Monitoring stations: 1