Where is Lone Stone Lake?

Lone Stone Lake is a lake in Oneida County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.

What is the water temperature of Lone Stone Lake?

Lone Stone Lake typically sits around 71°F at the surface in August, from 10 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.

How deep is Lone Stone Lake?

Lone Stone Lake has a maximum depth of 30 feet. The lake covers 171 acres.

Are there boat ramps on Lone Stone Lake?

Lone Stone Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lone Stone Lake. Public access is listed as yes.

Can I fish at Lone Stone Lake?

Lone Stone 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.

Lone Stone Lake

Oneida County, Wisconsin171 acresView map Directions

Wisconsin DNR publishes the water-quality measurements for Lone Stone Lake. Here is what has been measured.

Clarity

14.5 ft

Clearer than most

Secchi · sampled 2026

Phosphorus

11.5 µg/L

Less phosphorus than most

Measured by Wisconsin DNR

Water temp

~71°F

Typical for Aug · EPA WQP

Max depth

30 ft

Bathymetric survey

Area

171 acres

Surface area

Type

Oligotrophic

Trophic class

Oligotrophic
30 ft max depth
Public access

See the measurements Directions Where to stay

Lone Stone Lake in Oneida County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 14.5 ft visibility. Phosphorus: 11.5 µg/L. Maximum depth: 30 ft. Surface area: 171 acres.

Wisconsin DNR lists Panfish as common on Lone Stone Lake. DNR survey details →

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Lone Stone Lake is a 171-acre cold, clear oligotrophic lake in Oneida County, Wisconsin with a maximum depth of 30 feet. Overall water quality is improving over recent sampling years. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass. Public access is available with 1 public boat landing. Compared to the 66 other monitored lakes in Oneida County, Lone Stone Lake ranks #42 for water quality.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-04-26. Methodology: how these readings are compared.

Lone Stone Lake covers about 170 acres in Oneida County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Lone Stone Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.

What Lone Stone Lake is good for

From access and monitoring records, not editorial picks.

Clear water14.5 ft of visibility
Boat launch1 documented ramp
Fishing6 species recorded
Deep water30 ft surveyed max depth

Swimming conditions

Readings only

Low 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 Lone Stone 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.

Compare swimming lakes near Eagle River →

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Water quality measurements for Lone Stone Lake

These are the measurements Wisconsin DNR publishes for Lone Stone Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

Good clarity, visible to about 14.5 ft. Phosphorus 11.5 µg/L. TSI 39.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	14.5ft	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	11.5µg/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.	39	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

Ask about Lone Stone Lake

Answers come straight from the public measurements and survey records on this page.

Water Temperature

Lone Stone Lake typically sits around 71°F at the surface in August. Summer average is about 72°F. Usually warmest in Jul (about 75°F) and coldest in Apr (about 45°F). These are typical values by month — not a live reading.

Jan

Feb

Mar

45°

Apr

May

70°

Jun

75°

Jul

71°

Aug

Sep

Oct

Nov

Dec

Column height runs from this lake’s coldest month (45°F) to its warmest (75°F).

Typical surface water temperature by month, from 10 field readings (2024–2025) via the EPA Water Quality Portal. See the full Lone Stone Lake water temperature breakdown →

DNR fisheries survey

Wisconsin DNR lists Panfish as common on Lone Stone Lake.

A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lone Stone 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).

DNR Assessment

Excellent · Deep Headwater lake

Trophic State Index 38 (oligotrophic) · 5-year average

Fish Species (DNR-rated)

Panfish(Common)Northern Pike(Common)Musky(Present)Largemouth Bass(Present)Smallmouth Bass(Present)Walleye(Present)

Contour map (PDF) →Full WI DNR LakePage →Water quality stations →

Lake Details

Max depth

30 ft

Surface area

171 acres

Public access

Yes

Listed by Wisconsin DNR

Lake Size & Watershed

Watershed (drainage) area

1 sq mi

HydroLAKES / HydroSHEDS

Shoreline

2.1 mi

HydroLAKES / HydroSHEDS

Elevation

1,647 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).

Recreation & Access

Boat Landings

Yes

Public Access

Lone Stone 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 Lone Stone Lake

Compare lakeside cabins, hotels, and vacation rentals near Lone Stone Lake in Oneida 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 Lone Stone Lake

Prices for Oct 16–18, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a whole trip? See where to stay at Wisconsin’s top lakes →

Follow Lone Stone Lake’s readings

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Fish Species

Musky Panfish Largemouth Bass Smallmouth Bass Northern Pike Walleye

Click a species to see every lake where it is documented.

Fishing Lone Stone 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.

Banded Mystery SnailChinese Mystery SnailEurasian Water-Milfoil

Water Quality Trend: Improving

Based on 7 years of monitoring (2020–2026).

Water clarity
Improving
7 years
Phosphorus
Improving
-1.85 µg/L/yr4 years

See year-by-year chart →

Nearby Lakes in Oneida County

Fourmile Lake3 ft clear · Eutrophic—View →Lower Ninemile Lake—View →Sevenmile Lake—View →Big Fork Lake—View →Spring Lake—View →Little Fork Lake6 ft clear · Mesotrophic—View →

Frequently asked questions about Lone Stone Lake

Where is Lone Stone Lake?: Lone Stone Lake is a lake in Oneida County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Lone Stone Lake?: Lone Stone Lake in Oneida County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 14.5 ft visibility. Phosphorus: 11.5 µg/L. Maximum depth: 30 ft. Surface area: 171 acres.
Is Lone Stone 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 Lone Stone Lake?: Lone Stone Lake typically sits around 71°F at the surface in August, from 10 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Lone Stone Lake?: Lone Stone Lake has a maximum depth of 30 feet. The lake covers 171 acres.
What fish are in Lone Stone Lake?: Fish species found in Lone Stone Lake include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Lone Stone Lake is located in Oneida County, Wisconsin.
What did the DNR fisheries survey find at Lone Stone Lake?: Wisconsin DNR lists Panfish as common on Lone Stone Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lone Stone 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 Lone Stone Lake?: Lone Stone Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lone Stone Lake. Public access is listed as yes.
Can I fish at Lone Stone Lake?: Lone Stone 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.

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Where this data comes from

49 measurements from 1 monitoring station, 2021–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

Wisconsin Department of Natural ResourcesWIDNR_WQX49 samples · 2021–2026

Analytical methods

Phosphorus by Colorimetry

Monitoring station identifiers (1)

WIDNR_WQX-443208

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

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