Tenmile Lake
Barron County, Wisconsin266 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Tenmile Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- Curly-Leaf Pondweed
- 12 ft max depth
- Public access
- Limited data
Tenmile Lake in Barron County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 2 ft visibility. Maximum depth: 12 ft. Surface area: 266 acres.
Wisconsin DNR lists Largemouth Bass as common on Tenmile Lake. DNR survey details →
Tenmile Lake is a 266-acre lake in Barron County, Wisconsin with a maximum depth of 12 feet. Overall water quality is improving over recent sampling years. The lake supports 5 documented fish species including Panfish, Largemouth Bass, and Smallmouth Bass. Public access is available with 3 public boat landings.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-08-03. Methodology: how these readings are compared.
What Tenmile Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch3 documented ramps
- Fishing5 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Tenmile Lake is listed impaired under Clean Water Act §303(d) (IR 5R) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Tenmile 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 Tenmile Lake
These are the measurements Wisconsin DNR publishes for Tenmile 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 2 ft of visibility. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2ft | 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. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Tenmile Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Tenmile Lake typically sits around 73°F at the surface in September. Summer average is about 75°F. Usually warmest in Jul (about 80°F) and coldest in Jun (about 71°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (71°F) to its warmest (80°F).
Typical surface water temperature by month, from 17 field readings (2024–2025) via the EPA Water Quality Portal. See the full Tenmile Lake water temperature breakdown →
Wisconsin DNR lists Largemouth Bass as common on Tenmile Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Tenmile 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 1987. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
12 ft
Surface area
266 acres
Public access
Yes
Listed by Wisconsin DNR
Recreation & Access
- 7 1/4 AvenuePublic
- 7 1/2 AvenuePublic
- Southworth Memorial ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Tenmile Lake
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Top-rated places to stay near Tenmile Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Tenmile 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.
Water Quality Trend: Improving
Based on 7 years of monitoring (2020–2026).
Water clarity
Improving7 years
Phosphorus
Improving-0.5 µg/L/yr7 years
EPA Impairment Status
Tenmile Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5R).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit WI10024774 · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Tenmile Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Chetek City OfChetek · 0.7 mi away · NPDES WI0021598Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Barron County
Frequently asked questions about Tenmile Lake
Where is Tenmile Lake?
- Tenmile Lake is a lake in Barron County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Tenmile Lake?
- Tenmile Lake in Barron County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 2 ft visibility. Maximum depth: 12 ft. Surface area: 266 acres.
Is Tenmile Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Tenmile Lake is listed impaired under Clean Water Act §303(d) (IR 5R) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Tenmile Lake?
- Tenmile Lake typically sits around 73°F at the surface in September, from 17 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Tenmile Lake?
- Tenmile Lake has a maximum depth of 12 feet. The lake covers 266 acres.
What fish are in Tenmile Lake?
- Fish species found in Tenmile Lake include Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Tenmile Lake is located in Barron County, Wisconsin.
What did the DNR fisheries survey find at Tenmile Lake?
- Wisconsin DNR lists Largemouth Bass as common on Tenmile Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Tenmile 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 Tenmile Lake?
- Tenmile Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include 7 1/4 Avenue, 7 1/2 Avenue, Southworth Memorial Park. Public access is listed as yes.
Can I fish at Tenmile Lake?
- Tenmile Lake has 3 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 Tenmile Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and the cleanest lakes across Wisconsin
Fish species and best lakes in Barron County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its readings
Wisconsin's cleanest lakes, ranked on agency measurements
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State Parks Near Tenmile Lake
Other Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Where this data comes from
61 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX61 samples · 2020–2025
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory