Big Eau Pleine Southeast Point Lake
Marathon County, Wisconsin6,348 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Big Eau Pleine Southeast Point Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- 46 ft max depth
- Public access
- Limited data
Big Eau Pleine Southeast Point Lake in Marathon County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 1.5 ft visibility. Maximum depth: 46 ft. Surface area: 6348 acres.
Wisconsin DNR rates Walleye as abundant on Big Eau Pleine Southeast Point Lake. DNR survey details →
Big Eau Pleine Southeast Point Lake is a 6,348-acre lake in Marathon County, Wisconsin with a maximum depth of 46 feet. Overall water quality is improving over recent sampling years. The lake supports 4 documented fish species including Musky, Smallmouth Bass, and Northern Pike. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-06-26. Methodology: how these readings are compared.
At about 6,300 acres, Big Eau Pleine Southeast Point Lake is large enough that where you stay decides which shore you see most of. It has 2 public boat landings, so a lakefront rental is not the only way to get a boat on the water. Vrbo is where to look for cabins and lake homes around Big Eau Pleine Southeast Point Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Big Eau Pleine Southeast Point Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
- Fishing4 species recorded
- Deep water46 ft surveyed max depth
- Big water6,348 acres
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Big Eau Pleine Southeast Point Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Big Eau Pleine Southeast Point 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 Big Eau Pleine Southeast Point Lake
These are the measurements Wisconsin DNR publishes for Big Eau Pleine Southeast Point Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 1.5 ft of visibility. TSI 71.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| 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. | 71 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Big Eau Pleine Southeast Point Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR rates Walleye as abundant on Big Eau Pleine Southeast Point Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Big Eau Pleine Southeast Point Lake’s water-quality measurements separately, and the water-quality trend over 7 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 2006. 15 stations on file (most recent sample 2026).
Fish Species (DNR-rated)
Lake Details
Max depth
46 ft
Surface area
6,348 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
371 sq mi
HydroLAKES / HydroSHEDS
Shoreline
7.8 mi
HydroLAKES / HydroSHEDS
Elevation
1,132 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Sandy Shore DrivePublic
- Highway O - SouthSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Big Eau Pleine Southeast Point Lake
Compare lakeside cabins, hotels, and vacation rentals near Big Eau Pleine Southeast Point Lake in Marathon 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 Big Eau Pleine Southeast Point Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Big Eau Pleine Southeast Point Lake
- → Big Eau Pleine Southeast Point Lake fishing: DNR survey catch rates, species & stocking
- → Big Eau Pleine Southeast Point Lake fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Big Eau Pleine Southeast Point Lake fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Big Eau Pleine Southeast Point Lake? (mercury & PFAS guide)
Water Quality Trend: Improving
Based on 7 years of monitoring (2020–2026).
Water clarity
Improving7 years
Phosphorus
Improving-4.75 µg/L/yr3 years
EPA Impairment Status
Big Eau Pleine Southeast Point Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit WI10026869 · Official waterbody report
Nearby Lakes in Marathon County
Frequently asked questions about Big Eau Pleine Southeast Point Lake
Where is Big Eau Pleine Southeast Point Lake?
- Big Eau Pleine Southeast Point Lake is a lake in Marathon County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Big Eau Pleine Southeast Point Lake?
- Big Eau Pleine Southeast Point Lake in Marathon County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 1.5 ft visibility. Maximum depth: 46 ft. Surface area: 6348 acres.
Is Big Eau Pleine Southeast Point Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Big Eau Pleine Southeast Point Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Big Eau Pleine Southeast Point Lake?
- Big Eau Pleine Southeast Point Lake has a maximum depth of 46 feet. The lake covers 6348 acres.
What fish are in Big Eau Pleine Southeast Point Lake?
- Fish species found in Big Eau Pleine Southeast Point Lake include Musky, Smallmouth Bass, Northern Pike, Walleye. Big Eau Pleine Southeast Point Lake is located in Marathon County, Wisconsin.
What did the DNR fisheries survey find at Big Eau Pleine Southeast Point Lake?
- Wisconsin DNR rates Walleye as abundant on Big Eau Pleine Southeast Point Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Big Eau Pleine Southeast Point Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Big Eau Pleine Southeast Point Lake?
- Big Eau Pleine Southeast Point Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Sandy Shore Drive, Highway O - South. Public access is listed as yes.
Can I fish at Big Eau Pleine Southeast Point Lake?
- Big Eau Pleine Southeast Point Lake 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 Big Eau Pleine Southeast Point Lake across LakeQuality
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Species activity outlook by water temperature and season
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Where this data comes from
11 measurements from 1 monitoring station, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX11 samples · 2022–2023
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