Outlet To Lake Geneva
Walworth County, Wisconsin5,401 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Outlet To Lake Geneva. Here is what has been measured.
- Hypereutrophic
- 3 aquatic invasives
- 135 ft max depth
- Public access
- Limited data
Outlet To Lake Geneva in Walworth County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 658 µg/L. Maximum depth: 135 ft. Surface area: 5401 acres.
Wisconsin DNR rates Smallmouth Bass as abundant on Outlet To Lake Geneva. DNR survey details →
Outlet To Lake Geneva is a 5,401-acre highly nutrient-loaded hypereutrophic lake in Walworth County, Wisconsin with a maximum depth of 135 feet. Overall water quality is improving over recent sampling years. The lake supports 6 documented fish species including Panfish, Largemouth Bass, and Smallmouth Bass. Public access is available with 2 public boat landings and 6 public beaches. Compared to the 18 other monitored lakes in Walworth County, Outlet To Lake Geneva ranks #19 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-10-27. Methodology: how these readings are compared.
What Outlet To Lake Geneva is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
- Beach6 documented beaches
- Fishing6 species recorded
- Deep water135 ft surveyed max depth
- Big water5,401 acres
Swimming conditions
Readings onlyBacteria tested: low
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.
Based on E. coli testing, Outlet To Lake Geneva rarely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 2.8% of 500 samples across 9 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Wisconsin’s current beach and health-department advisories before swimming.
Whether Outlet To Lake Geneva 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 Outlet To Lake Geneva
These are the measurements Wisconsin DNR publishes for Outlet To Lake Geneva, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 658 µg/L. TSI 98.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 658µg/L | Poor 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. | 98 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Outlet To Lake Geneva
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR rates Smallmouth Bass as abundant on Outlet To Lake Geneva.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Outlet To Lake Geneva’s water-quality measurements separately, 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. 15 stations on file (most recent sample 2026).
Fish Species (DNR-rated)
Lake Details
Max depth
135 ft
Surface area
5,401 acres
Public access
Yes
Listed by Wisconsin DNR
Recreation & Access
- Lake Geneva - Hillside RoadPublic
- Lake GenevaPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Outlet To Lake Geneva
Compare lakeside cabins, hotels, and vacation rentals near Outlet To Lake Geneva 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Outlet To Lake Geneva are listed below.
Top-rated places to stay near Outlet To Lake Geneva
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Follow Outlet To Lake Geneva’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Outlet To Lake Geneva
- → Outlet To Lake Geneva fishing: DNR survey catch rates, species & stocking
- → Outlet To Lake Geneva fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Outlet To Lake Geneva fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Outlet To Lake Geneva? (mercury & PFAS guide)
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 readings over time
2 seasons of samples on record (2020–2025). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-89.82 µg/L/yr2 years
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Outlet To Lake Geneva under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Lake Geneva Wastewater Treatment PltLake Geneva, City Of · 2.6 mi away · NPDES WI0021130Recent violation
- Merry Water Farms IncLinn, Town Of · 4.6 mi away · NPDES WI0061883Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Walworth County
Frequently asked questions about Outlet To Lake Geneva
Where is Outlet To Lake Geneva?
- Outlet To Lake Geneva 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 Outlet To Lake Geneva?
- Outlet To Lake Geneva in Walworth County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 658 µg/L. Maximum depth: 135 ft. Surface area: 5401 acres.
Is Outlet To Lake Geneva safe to swim in?
- Based on E. coli testing, Outlet To Lake Geneva rarely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 2.8% of 500 samples across 9 seasons. That is a historical summary of past bacteria testing, not a current reading and not a swimming clearance. Bacteria levels can spike quickly after heavy rain, so whether Outlet To Lake Geneva is safe to swim in today is a call for Wisconsin's water agency and the county health department; check their current beach advisories before you swim.
How deep is Outlet To Lake Geneva?
- Outlet To Lake Geneva has a maximum depth of 135 feet. The lake covers 5401 acres.
What fish are in Outlet To Lake Geneva?
- Fish species found in Outlet To Lake Geneva include Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Trout, Walleye. Outlet To Lake Geneva is located in Walworth County, Wisconsin.
What did the DNR fisheries survey find at Outlet To Lake Geneva?
- Wisconsin DNR rates Smallmouth Bass as abundant on Outlet To Lake Geneva. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Outlet To Lake Geneva’s water-quality measurements separately, 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.
Are there boat ramps on Outlet To Lake Geneva?
- Outlet To Lake Geneva has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Lake Geneva - Hillside Road, Lake Geneva. Public access is listed as yes.
Can I fish at Outlet To Lake Geneva?
- Outlet To Lake Geneva has 2 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Outlet To Lake Geneva across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and the cleanest 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 readings
Wisconsin's cleanest lakes, ranked on agency measurements
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State Parks Near Outlet To Lake Geneva
Other Lakes in Wisconsin
Hypereutrophic Lakes in Wisconsin
Compare Outlet To Lake Geneva With Nearby Lakes
Where this data comes from
4 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX4 samples · 2020
Analytical methods
- Phosphorus by Colorimetry
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory