Booth Lake
Booth Lake in Walworth County, Wisconsin has a water quality grade of B (Good). Water clarity: 8 ft visibility. Phosphorus: 15.9 µg/L. Maximum depth: 24 ft. Surface area: 118 acres.
Wisconsin DNR lists Panfish as common on Booth Lake. DNR survey details →
- Clarity
- 8 ft
- Typical in August
- 84°F
- Max depth
- 24 ft
- Area
- 118 acres
- Type
- Mesotrophic
- Trend
- ↓ Declining
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Booth Lake is a 118-acre mesotrophic lake in Walworth County, Wisconsin with a maximum depth of 24 feet. Water quality is graded B based on 1 sampling years through 2026. Overall water quality is declining over recent sampling years. The lake supports 2 documented fish species including Panfish and Largemouth Bass. Compared to the 18 other monitored lakes in Walworth County, Booth Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-29. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Moderate clarity, visible to about 8 ft. Phosphorus level: 15.9 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8 ft | Not graded |
| Phosphorus | 15.9 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Booth Lake
Compare lakeside cabins, hotels, and vacation rentals near Booth 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 Booth Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Water Temperature
Booth Lake typically sits around 84°F at the surface in August. Summer average is about 81°F. Usually warmest in Jul (about 84°F) and coldest in Oct (about 62°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 20 field readings (2024–2025) via the EPA Water Quality Portal. See the full Booth Lake water temperature breakdown →
Wisconsin DNR lists Panfish as common on Booth Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Booth Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 7 years of monitoring is declining. 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. Monitored by volunteers since 1990. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Surface Area | 118 acres |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Booth 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: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.25 m/yr | 7 |
| Phosphorus | ↓ Declining | +0.52 µg/L/yr | 5 |
County Ranking
Ranked #7 of 19 lakes in Walworth County
Nearby Lakes With Higher Grades
Booth Lake holds Grade B. One nearby lake has a higher nutrient-and-algae grade — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Walworth County
Frequently asked questions about Booth Lake
Where is Booth Lake?
- Booth Lake is a lake in Walworth County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Booth Lake?
- Booth Lake in Walworth County, Wisconsin has a water quality grade of B (Good). Water clarity: 8 ft visibility. Phosphorus: 15.9 µg/L. Maximum depth: 24 ft. Surface area: 118 acres.
Is Booth Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Booth Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Booth Lake?
- Booth Lake typically sits around 84°F at the surface in August, from 20 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Booth Lake?
- Booth Lake has a maximum depth of 24 feet. The lake covers 118 acres.
What fish are in Booth Lake?
- Fish species found in Booth Lake include Panfish, Largemouth Bass. Booth Lake is located in Walworth County, Wisconsin.
What did the DNR fisheries survey find at Booth Lake?
- Wisconsin DNR lists Panfish as common on Booth Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Booth Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 7 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Explore Booth Lake across LakeQuality
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Walworth County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its grade
Moderate nutrients, good water quality
Wisconsin's cleanest and most-polluted lakes, ranked
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State Parks Near Booth Lake
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Where this data comes from
66 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX66 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
- Total Phosphorus After Block Digestion
- 2130 B ~ Nephelometric Method
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes