Is Cranberry Lake safe to swim in?

Good for swimming, clear water with low algae levels. Cranberry Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.

What is the water temperature of Cranberry Lake?

Cranberry Lake typically sits around 73°F at the surface in August, from 17 EPA Water Quality Portal field readings (2025–2025). That is a typical value for the month, not a live reading.

How deep is Cranberry Lake?

Cranberry Lake has a maximum depth of 26 feet. The lake covers 66 acres.

What fish are in Cranberry Lake?

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

Cranberry Lake

Grade B — Good

Good · #3 of 30 lakes in the county · 8.8 ft clear · Mesotrophic · 66 acres

Mesotrophic

Cranberry Lake in Burnett County, Wisconsin has a water quality grade of B (Good). Water clarity: 8.8 ft visibility. Phosphorus: 14.1 µg/L. Maximum depth: 26 ft. Surface area: 66 acres.

Clarity: 8.8 ft
Typical in August: 73°F
Max depth: 26 ft
Area: 66 acres
Type: Mesotrophic
Trend: ↑ Improving

Where to stay →Safe to swim?

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BMinerva Lake10.5 ft clear · Burnett CountyView →

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Cranberry Lake is a 66-acre mesotrophic lake in Burnett County, Wisconsin with a maximum depth of 26 feet. Water quality is graded B based on 1 sampling years through 2026. Overall water quality is improving over recent sampling years. The lake supports 4 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Compared to the 29 other monitored lakes in Burnett County, Cranberry Lake ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-16. Grade methodology: LakeGrade methodology.

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Swimming Safety

Grade only

Low algae

Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.

Good for swimming, clear water with low algae levels

Compare the safest swimming lakes near Hayward →

Get alerts for Cranberry Lake →

Water Quality Grade: B (Good)

Moderate clarity, visible to about 8.8 ft. Phosphorus level: 14.1 µg/L. Trophic State Index: 44.

Metric	Value	Grade
Water Clarity (Secchi Depth)	8.8 ft	Not graded
Phosphorus	14.1 µg/L	Good
Chlorophyll-a (Algae)	No recent samples
Trophic State Index (TSI)	44	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Cranberry Lake

Compare lakeside cabins, hotels, and vacation rentals near Cranberry 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 Cranberry Lake

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

Water Temperature

Cranberry Lake typically sits around 73°F at the surface in August. Summer average is about 74°F. Usually warmest in Jul (about 79°F) and coldest in Sep (about 65°F). These are typical values by month — not a live reading.

Jan

—

Feb

—

Mar

—

Apr

—

May

—

Jun

71°

Jul

79°

Aug

73°

Sep

65°

Oct

—

Nov

—

Dec

—

Typical surface water temperature by month, from 17 field readings (2025–2025) via the EPA Water Quality Portal. See the full Cranberry Lake water temperature breakdown →

Lake Details

Characteristic	Value
Maximum Depth	26 ft
Surface Area	66 acres

Lake Size & Watershed

Watershed (drainage) area

6 sq mi

Shoreline

3.8 mi

Elevation

935 ft

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

Fish Species

Panfish Largemouth Bass Northern Pike Walleye

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

Fishing Cranberry Lake

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1995. 1 station on file (most recent sample 2025).

DNR Assessment

Excellent · Deep Headwater lake

Trophic State Index 45 (mesotrophic) · 5-year average

Fish Species (DNR-rated)

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

Full WI DNR LakePage →Water quality stations →

Water Quality Trend: ↑ Improving

Based on 7 years of monitoring data (2020-2025).

Metric	Trend	Change/Year	Years
Water Clarity	→ Stable	-0.149 m/yr	6
Phosphorus	↑ Improving	-0.32 µg/L/yr	7

See year-by-year chart →

County Ranking

Ranked #3 of 30 lakes in Burnett County

Nearby Lakes in Burnett County

BMinerva Lake10.5 ft clear · MesotrophicView →NRFalk Lake10 ft clearView →BGull Lake8 ft clear · MesotrophicView →NRLove Lake11 ft clearView →NRCrooked Lake10.5 ft clearView →BJohnson Lake12.2 ft clear · MesotrophicView →

Frequently asked questions about Cranberry Lake

What is the water quality grade for Cranberry Lake?: Cranberry Lake in Burnett County, Wisconsin has a water quality grade of B (Good). Water clarity: 8.8 ft visibility. Phosphorus: 14.1 µg/L. Maximum depth: 26 ft. Surface area: 66 acres.
Is Cranberry Lake safe to swim in?: Good for swimming, clear water with low algae levels. Cranberry Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Cranberry Lake?: Cranberry Lake typically sits around 73°F at the surface in August, from 17 EPA Water Quality Portal field readings (2025–2025). That is a typical value for the month, not a live reading.
How deep is Cranberry Lake?: Cranberry Lake has a maximum depth of 26 feet. The lake covers 66 acres.
What fish are in Cranberry Lake?: Fish species found in Cranberry Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. Cranberry Lake is located in Burnett County, Wisconsin.

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Other Grade B Lakes in Wisconsin

Lower Mckenzie Lake

Washburn County · 11 ft

Big Mckenzie Lake

Washburn County · 10 ft

Bass Lake

Washburn County · 16 ft

Dinger Lake

Polk County · 6.2 ft

Lake Nancy

Washburn County · 14 ft

Matthews Lake

Washburn County · 13.3 ft

Mesotrophic Lakes in Wisconsin

Lower Mckenzie Lake No Mans Lake Big Mckenzie Lake Diamond Lake

Where this data comes from

58 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 ResourcesWIDNR_WQX58 samples · 2020–2026

Analytical methods

Phosphorus by Colorimetry

Monitoring station identifiers (1)

WIDNR_WQX-073093

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.