Where is Gaslyn Lake?

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

What is the water temperature of Gaslyn Lake?

Gaslyn Lake typically sits around 50°F at the surface in October, from 72 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.

How deep is Gaslyn Lake?

Gaslyn Lake has a maximum depth of 12 feet. The lake covers 161 acres.

What fish are in Gaslyn Lake?

Fish species found in Gaslyn Lake include Panfish, Largemouth Bass, Northern Pike. Gaslyn Lake is located in Burnett County, Wisconsin.

Are there boat ramps on Gaslyn Lake?

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

Can I fish at Gaslyn Lake?

Gaslyn 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.

Gaslyn Lake

Burnett County, Wisconsin161 acresView map Directions

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

Clarity

4.5 ft

Murkier than most

Secchi · sampled 2025

Phosphorus

31.5 µg/L

More phosphorus than most

Measured by Wisconsin DNR

Chlorophyll-a

4.2 µg/L

Typical for Wisconsin

Measured by Wisconsin DNR

Water temp

~50°F

Typical for Oct · EPA WQP

Max depth

12 ft

Bathymetric survey

Area

161 acres

Surface area

Eutrophic
Purple Loosestrife
12 ft max depth
Public access

See the measurements Directions Where to stay

Gaslyn Lake in Burnett County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 31.5 µg/L. Chlorophyll-a (algae): 4.2 µg/L. Maximum depth: 12 ft. Surface area: 161 acres.

Wisconsin DNR lists Northern Pike as common on Gaslyn Lake. DNR survey details →

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Gaslyn Lake is a 161-acre productive, nutrient-rich eutrophic lake in Burnett County, Wisconsin with a maximum depth of 12 feet. Water clarity is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 29 other monitored lakes in Burnett County, Gaslyn Lake ranks #2 for water quality.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-10-27. Methodology: how these readings are compared.

What Gaslyn Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Fishing3 species recorded

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 Gaslyn 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 Hayward →

Get alerts for Gaslyn Lake →

Water quality measurements for Gaslyn Lake

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

Murky, only visible to about 4.5 ft. Phosphorus 31.5 µg/L. Chlorophyll-a 4.2 µg/L. TSI 51.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	4.5ft	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	31.5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	4.2µg/L	Good GoodFairPoor
Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.	51	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Gaslyn Lake

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

Water Temperature

Gaslyn Lake typically sits around 50°F at the surface in October. Summer average is about 74°F. Usually warmest in Jul (about 77°F) and coldest in Oct (about 50°F). These are typical values by month — not a live reading.

Jan

Feb

Mar

51°

Apr

64°

May

74°

Jun

77°

Jul

71°

Aug

68°

Sep

50°

Oct

Nov

Dec

Column height runs from this lake’s coldest month (50°F) to its warmest (77°F).

Typical surface water temperature by month, from 72 field readings (2024–2025) via the EPA Water Quality Portal. See the full Gaslyn Lake water temperature breakdown →

DNR fisheries survey

Wisconsin DNR lists Northern Pike as common on Gaslyn Lake.

A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Gaslyn Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is stable. 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. 1 station on file (most recent sample 1979).

Fish Species (DNR-rated)

Northern Pike(Common)Panfish(Present)Largemouth Bass(Present)

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

Lake Details

Max depth

12 ft

Surface area

161 acres

Public access

Yes

Listed by Wisconsin DNR

Lake Size & Watershed

Watershed (drainage) area

4 sq mi

HydroLAKES / HydroSHEDS

Shoreline

1.9 mi

HydroLAKES / HydroSHEDS

Elevation

968 ft

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

Recreation & Access

Boat Landings

Yes

Public Access

Gaslyn 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 Gaslyn Lake

Compare lakeside cabins, hotels, and vacation rentals near Gaslyn Lake in Burnett 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 Gaslyn Lake

Prices for Oct 9–11, 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 Gaslyn Lake’s readings

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Fish Species

Panfish Largemouth Bass Northern Pike

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

Fishing Gaslyn 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.

Chinese Mystery SnailPurple Loosestrife

Water Quality Trend: Stable

Based on 6 years of monitoring (2020–2025).

Water clarity
Improving
6 years
Phosphorus
Stable
-0.56 µg/L/yr6 years
Chlorophyll-a
Worsening
+0.14 µg/L/yr6 years

See year-by-year chart →

Nearby Lakes in Burnett County

Upper Twin Lake—View →Durand Lake—View →Benoit Lake11.1 ft clear · Mesotrophic—View →Lower Twin Lake—View →Oak Lake11.3 ft clear—View →Dubois Lake10 ft clear—View →

Frequently asked questions about Gaslyn Lake

Where is Gaslyn Lake?: Gaslyn Lake is a lake in Burnett County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Gaslyn Lake?: Gaslyn Lake in Burnett County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4.5 ft visibility. Phosphorus: 31.5 µg/L. Chlorophyll-a (algae): 4.2 µg/L. Maximum depth: 12 ft. Surface area: 161 acres.
Is Gaslyn 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 Gaslyn Lake?: Gaslyn Lake typically sits around 50°F at the surface in October, from 72 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Gaslyn Lake?: Gaslyn Lake has a maximum depth of 12 feet. The lake covers 161 acres.
What fish are in Gaslyn Lake?: Fish species found in Gaslyn Lake include Panfish, Largemouth Bass, Northern Pike. Gaslyn Lake is located in Burnett County, Wisconsin.
What did the DNR fisheries survey find at Gaslyn Lake?: Wisconsin DNR lists Northern Pike as common on Gaslyn Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Gaslyn Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Gaslyn Lake?: Gaslyn Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Gaslyn Lake. Public access is listed as yes.
Can I fish at Gaslyn Lake?: Gaslyn 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 Gaslyn Lake across LakeQuality

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State Parks Near Gaslyn Lake

Straight Lake State Park

State Park · 25 mi

Other Lakes in Wisconsin

Sand Lake

Barron County · 13 ft

Sand Lake

Sawyer County · 10 ft

Durphee Lake

Sawyer County · 8.1 ft

Whitefish Lake

Sawyer County · 13.5 ft

Lac Courte Oreilles Lake

Sawyer County · 12.2 ft

Grindstone Lake

Sawyer County · 17.4 ft

Eutrophic Lakes in Wisconsin

Unnamed Lake Largon Lake Minong Flowage Lake Radigan Flowage Lake

Where this data comes from

274 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

St. Croix Chippewa Indians of WisconsinSTCROIX_WQX274 samples · 2020–2025

Analytical methods

4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
4500 P F ~ Phosphorus in Water by Colorimetry Automated Ascorbic Acid Method
10200 H ~ Chlorophyll a-b-c Determination
Calculation

Monitoring station identifiers (1)

STCROIX_WQX-4

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