Big Twin Lake
Big Twin Lake in Waushara County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 13 ft. Surface area: 93 acres.
Wisconsin DNR lists Panfish as common on Big Twin Lake. DNR survey details →
- Max depth
- 13 ft
- Area
- 93 acres
- Public access
- Yes
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Why Big Twin Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Big Twin Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Big Twin Lake is a 93-acre lake in Waushara County, Wisconsin with a maximum depth of 13 feet. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-05-14. Grade methodology: LakeQuality methodology.
Watch Big Twin Lake water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Big Twin Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Big Twin Lake
Compare lakeside cabins, hotels, and vacation rentals near Big Twin Lake in Waushara 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 Twin Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Wisconsin DNR lists Panfish as common on Big Twin Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Big Twin Lake — official chemistry is on file, not a letter. 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. 2 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Big Twin Lake covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2023Big Twin Lake spring shocking survey, 2023Spring Shocking Survey · WI DNR · 2023 (PDF)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 13 ft |
| Surface Area | 93 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Twin LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Big Twin 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.
Graded lakes near Big Twin Lake
Big Twin Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Waushara County
Frequently asked questions about Big Twin Lake
Where is Big Twin Lake?
- Big Twin Lake is a lake in Waushara County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Big Twin Lake?
- Big Twin Lake in Waushara County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Maximum depth: 13 ft. Surface area: 93 acres.
Is Big Twin Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Big Twin Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Big Twin Lake?
- Big Twin Lake has a maximum depth of 13 feet. The lake covers 93 acres.
What fish are in Big Twin Lake?
- Fish species found in Big Twin Lake include Panfish, Largemouth Bass, Northern Pike. Big Twin Lake is located in Waushara County, Wisconsin.
What did the DNR fisheries survey find at Big Twin Lake?
- Wisconsin DNR lists Panfish as common on Big Twin Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Big Twin Lake — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Big Twin Lake?
- Big Twin Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Twin Lake. Public access is listed as yes.
Explore Big Twin Lake across LakeQuality
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Where this data comes from
4 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX4 samples · 2024–2025
Analytical methods
- 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
Named boat-access points from the USGS National Boat Ramps inventory