Tenmile Lake
Tenmile Lake in Barron County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. 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 →
- Clarity
- 2 ft
- Typical in August
- 75°F
- Max depth
- 12 ft
- Area
- 266 acres
- Trend
- ↑ Improving
- Public access
- Yes
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Why Tenmile 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 Tenmile Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
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.
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. Grade methodology: LakeQuality methodology.
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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 Tenmile Lake
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 2 ft of visibility. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Tenmile Lake
Compare lakeside cabins, hotels, and vacation rentals near Tenmile Lake in Barron 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 Tenmile Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Water Temperature
Tenmile Lake typically sits around 75°F at the surface in August. 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.
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 a water-quality grade. LakeQuality does not assign an A–F grade on Tenmile Lake — official chemistry is on file, not a letter, 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
| Characteristic | Value |
|---|---|
| Maximum Depth | 12 ft |
| Surface Area | 266 acres |
| Public Access | Yes |
Recreation & Access
- 25 1/2 Street (Lakeview Drive)Public
- 7 1/4 AvenuePublic
- Southworth Memorial ParkPublic
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 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 data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1.62 m/yr | 7 |
| Phosphorus | ↑ Improving | -0.5 µg/L/yr | 7 |
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
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.
Graded lakes near Tenmile Lake
Tenmile Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Barron County
Frequently asked questions about Tenmile Lake
Where is Tenmile Lake?
- Tenmile Lake is a lake in Barron 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 Tenmile Lake?
- Tenmile Lake in Barron County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2 ft visibility. Maximum depth: 12 ft. Surface area: 266 acres.
Is Tenmile Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Tenmile Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Tenmile Lake?
- Tenmile Lake typically sits around 75°F at the surface in August, 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 a water-quality grade. LakeQuality does not assign an A–F grade on Tenmile Lake — official chemistry is on file, not a letter, 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 25 1/2 Street (Lakeview Drive), 7 1/4 Avenue, Southworth Memorial Park. Public access is listed as yes.
Explore Tenmile Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Barron County
Species activity outlook by water temperature and season
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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)
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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
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