Booth Lake
Walworth County, Wisconsin118 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Booth Lake. Here is what has been measured.
- Mesotrophic
- 24 ft max depth
Booth Lake in Walworth County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. 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 →
Booth Lake is a 118-acre mesotrophic lake in Walworth County, Wisconsin with a maximum depth of 24 feet. 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. Methodology: how these readings are compared.
Booth Lake covers about 120 acres in Walworth County. If you are planning to stay, you can search lake houses and cabins around Booth Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Booth Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Booth Lake
These are the measurements Wisconsin DNR publishes for Booth Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8 ft. Phosphorus 15.9 µg/L. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 15.9µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 46 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Booth Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Booth Lake typically sits around 62°F at the surface in October. 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.
Column height runs from this lake’s coldest month (62°F) to its warmest (84°F).
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 water quality. LakeQuality shows Booth Lake’s water-quality measurements separately, 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
Max depth
24 ft
Surface area
118 acres
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.6 mi
HydroLAKES / HydroSHEDS
Elevation
820 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays 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
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
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Fish Species
Click a species to see every 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: Worsening
Based on 7 years of monitoring (2020–2026).
Water clarity
Worsening7 years
Phosphorus
Worsening+0.52 µg/L/yr5 years
Nearby Lakes in Walworth County
Frequently asked questions about Booth Lake
Where is Booth Lake?
- Booth Lake is a lake in Walworth County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Booth Lake?
- Booth Lake in Walworth County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. 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?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Booth Lake?
- Booth Lake typically sits around 62°F at the surface in October, 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 water quality. LakeQuality shows Booth Lake’s water-quality measurements separately, 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
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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)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes