East Twin Lake
East Twin Lake in Marquette County, Wisconsin has a water quality grade of B (Good). Water clarity: 3.3 ft visibility. Phosphorus: 18.1 µg/L. Maximum depth: 8 ft. Surface area: 13 acres.
- Clarity
- 3.3 ft
- Max depth
- 8 ft
- Area
- 13 acres
- Type
- Eutrophic
- Public access
- Yes
Next lake in Marquette County
East Twin Lake is a 13-acre productive, nutrient-rich eutrophic lake in Marquette County, Wisconsin with a maximum depth of 8 feet. Water quality is graded B based on 1 sampling years through 2021. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 10 other monitored lakes in Marquette County, East Twin Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2021-02-18. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Very murky, less than 3.3 ft of visibility. Phosphorus level: 18.1 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | Not graded |
| Phosphorus | 18.1 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near East Twin Lake
Compare lakeside cabins, hotels, and vacation rentals near East Twin Lake in Marquette 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 8 ft |
| Surface Area | 13 acres |
| Public Access | Yes |
Recreation & Access
- East Twin LakePublic
Fishing East 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.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2021).
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for East 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).
- 2022Twin Lakes spring shocking survey, 2022Spring Shocking Survey · WI DNR · 2022 (PDF)
County Ranking
Ranked #5 of 11 lakes in Marquette County
Nearby Lakes in Marquette County
Frequently asked questions about East Twin Lake
What is the water quality grade for East Twin Lake?
- East Twin Lake in Marquette County, Wisconsin has a water quality grade of B (Good). Water clarity: 3.3 ft visibility. Phosphorus: 18.1 µg/L. Maximum depth: 8 ft. Surface area: 13 acres.
Is East Twin Lake safe to swim in?
- Good for swimming, clear water with low algae levels. East Twin Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is East Twin Lake?
- East Twin Lake has a maximum depth of 8 feet. The lake covers 13 acres.
Are there boat ramps on East Twin Lake?
- East Twin Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include East Twin Lake. Public access is listed as yes.
Explore East Twin Lake across LakeGrade
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Marquette County
Species activity outlook by water temperature and season
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High nutrients, frequent algae, reduced clarity
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State Parks Near East Twin Lake
Other Grade B Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Where this data comes from
11 measurements from 1 monitoring station, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX11 samples · 2020–2021
Analytical methods
- Phosphorus by Colorimetry
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
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory