Peters Lake
Peters Lake in Walworth County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.6 ft visibility. Phosphorus: 19.6 µg/L. Maximum depth: 8 ft. Surface area: 58 acres.
Wisconsin DNR lists Panfish as present on Peters Lake. DNR survey details →
- Clarity
- 5.6 ft
- Max depth
- 8 ft
- Area
- 58 acres
- Trend
- ↑ Improving
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Why Peters Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Peters Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Peters Lake is a 58-acre lake in Walworth County, Wisconsin with a maximum depth of 8 feet. Overall water quality is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-09-06. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Peters Lake
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 5.6 ft. Phosphorus level: 19.6 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.6 ft | Not graded |
| Phosphorus | 19.6 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Peters Lake
Compare lakeside cabins, hotels, and vacation rentals near Peters Lake in Walworth County, Wisconsin — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Peters Lake
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Wisconsin DNR lists Panfish as present on Peters Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Peters Lake — official chemistry is on file, not a letter, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2022).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 8 ft |
| Surface Area | 58 acres |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Peters Lake
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 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.14 m/yr | 2 |
Graded lakes near Peters Lake
Peters Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Walworth County
Frequently asked questions about Peters Lake
Where is Peters Lake?
- Peters Lake is a lake in Walworth County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Peters Lake?
- Peters Lake in Walworth County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.6 ft visibility. Phosphorus: 19.6 µg/L. Maximum depth: 8 ft. Surface area: 58 acres.
Is Peters Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Peters Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Peters Lake?
- Peters Lake has a maximum depth of 8 feet. The lake covers 58 acres.
What fish are in Peters Lake?
- Fish species found in Peters Lake include Panfish, Largemouth Bass, Northern Pike. Peters Lake is located in Walworth County, Wisconsin.
What did the DNR fisheries survey find at Peters Lake?
- Wisconsin DNR lists Panfish as present on Peters Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Peters Lake — official chemistry is on file, not a letter, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Explore Peters Lake across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX3 samples · 2022
Analytical methods
- Phosphorus by Colorimetry
- Turbidity in Water
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Fish and recreation data from Wisconsin DNR Lakes