Two Island Lake
Chippewa County, Wisconsin29 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Two Island Lake. Here is what has been measured.
- Mesotrophic
- 38 ft max depth
- Public access
Two Island Lake in Chippewa County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 15.3 ft visibility. Phosphorus: 14.8 µg/L. Maximum depth: 38 ft. Surface area: 29 acres.
Wisconsin DNR lists Largemouth Bass as common on Two Island Lake. DNR survey details →
Two Island Lake is a 29-acre mesotrophic lake in Chippewa County, Wisconsin with a maximum depth of 38 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 6 other monitored lakes in Chippewa County, Two Island Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-22. Methodology: how these readings are compared.
What Two Island Lake is good for
From access and monitoring records, not editorial picks.
- Clear water15.3 ft of visibility
- Boat launch1 documented ramp
- Deep water38 ft surveyed max depth
Swimming conditions
Readings onlyLow algae
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. Check local advisories before you swim.
Whether Two Island 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 Two Island Lake
These are the measurements Wisconsin DNR publishes for Two Island Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 15.3 ft down. Phosphorus 14.8 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 15.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 14.8µg/L | Good 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. | 40 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Two Island Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Two Island Lake typically sits around 56°F at the surface in October. Summer average is about 76°F. Usually warmest in Jul (about 79°F) and coldest in Apr (about 51°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (51°F) to its warmest (79°F).
Typical surface water temperature by month, from 30 field readings (2024–2025) via the EPA Water Quality Portal. See the full Two Island Lake water temperature breakdown →
Wisconsin DNR lists Largemouth Bass as common on Two Island Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Two Island 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 1994. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
38 ft
Surface area
29 acres
Public access
Yes
Listed by Wisconsin DNR
Recreation & Access
- Two Island 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 Two Island Lake
Compare lakeside cabins, hotels, and vacation rentals near Two Island Lake in Chippewa 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 Two Island Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Two Island Lake
Water Quality Trend: Improving
Based on 7 years of monitoring (2020–2026).
Water clarity
Improving7 years
Phosphorus
Improving-0.96 µg/L/yr7 years
Nearby Lakes in Chippewa County
Frequently asked questions about Two Island Lake
Where is Two Island Lake?
- Two Island Lake is a lake in Chippewa County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Two Island Lake?
- Two Island Lake in Chippewa County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 15.3 ft visibility. Phosphorus: 14.8 µg/L. Maximum depth: 38 ft. Surface area: 29 acres.
Is Two Island Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Two Island Lake?
- Two Island Lake typically sits around 56°F at the surface in October, from 30 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Two Island Lake?
- Two Island Lake has a maximum depth of 38 feet. The lake covers 29 acres.
What fish are in Two Island Lake?
- Fish species found in Two Island Lake include Panfish, Largemouth Bass. Two Island Lake is located in Chippewa County, Wisconsin.
What did the DNR fisheries survey find at Two Island Lake?
- Wisconsin DNR lists Largemouth Bass as common on Two Island Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Two Island 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 Two Island Lake?
- Two Island Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Two Island Lake. Public access is listed as yes.
Can I fish at Two Island Lake?
- Two Island Lake 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 Two Island Lake across LakeQuality
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Where this data comes from
71 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_WQX71 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
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory