Lake Lorraine
Walworth County, Wisconsin155 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Lake Lorraine. Here is what has been measured.
- Eutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- Curly-Leaf Pondweed
- 8 ft max depth
- Public access
Lake Lorraine in Walworth County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 48.9 µg/L. Maximum depth: 8 ft. Surface area: 155 acres.
Wisconsin DNR lists Panfish as present on Lake Lorraine. DNR survey details →
Lake Lorraine is a 155-acre productive, nutrient-rich eutrophic lake in Walworth County, Wisconsin with a maximum depth of 8 feet. Overall water quality is improving over recent sampling years. The lake supports 2 documented fish species including Panfish and Largemouth Bass. Public access is available with 1 public boat landing. Compared to the 18 other monitored lakes in Walworth County, Lake Lorraine ranks #15 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-23. Methodology: how these readings are compared.
Lake Lorraine covers about 160 acres in Walworth County. It has one public boat landing. For a place on the water, look through cabin and lake-house rentals near Lake Lorraine on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Lake Lorraine is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyRecreation use not supported
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. Lake Lorraine is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Lake Lorraine 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 Lake Lorraine
These are the measurements Wisconsin DNR publishes for Lake Lorraine, 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 48.9 µg/L. TSI 60.
| 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 | 48.9µg/L | Fair 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. | 60 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Lorraine
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Panfish as present on Lake Lorraine.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lake Lorraine’s water-quality measurements separately, and the water-quality trend over 6 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. Monitored by volunteers since 1995. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
8 ft
Surface area
155 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.5 mi
HydroLAKES / HydroSHEDS
Elevation
915 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Lorraine LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Lorraine
Compare lakeside cabins, hotels, and vacation rentals near Lake Lorraine 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 Lake Lorraine
Prices for Oct 16–18, 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 →
Follow Lake Lorraine’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Lake Lorraine
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 (2020–2026).
Phosphorus
Improving-7.19 µg/L/yr6 years
EPA Impairment Status
Lake Lorraine is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
Source: EPA ATTAINS assessment unit WI10001543 · Official waterbody report
Nearby Lakes in Walworth County
Frequently asked questions about Lake Lorraine
Where is Lake Lorraine?
- Lake Lorraine 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 Lake Lorraine?
- Lake Lorraine in Walworth County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Phosphorus: 48.9 µg/L. Maximum depth: 8 ft. Surface area: 155 acres.
Is Lake Lorraine safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Lorraine is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Lake Lorraine?
- Lake Lorraine has a maximum depth of 8 feet. The lake covers 155 acres.
What fish are in Lake Lorraine?
- Fish species found in Lake Lorraine include Panfish, Largemouth Bass. Lake Lorraine is located in Walworth County, Wisconsin.
What did the DNR fisheries survey find at Lake Lorraine?
- Wisconsin DNR lists Panfish as present on Lake Lorraine. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lake Lorraine’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Lake Lorraine?
- Lake Lorraine has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lorraine Lake. Public access is listed as yes.
Can I fish at Lake Lorraine?
- Lake Lorraine has 1 documented boat landing 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 Lake Lorraine across LakeQuality
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Where this data comes from
15 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_WQX15 samples · 2020–2026
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory