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

How deep is Frank Lake?

Frank Lake has a maximum depth of 38 feet. The lake covers 147 acres.

What fish are in Frank Lake?

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

Can I fish at Frank Lake?

Public access to Frank Lake is listed as yes on the lake record. 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.

Frank Lake

Vilas County, Wisconsin147 acresView map Directions

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

Clarity

12.8 ft

Clearer than most

Secchi · sampled 2021

Max depth

38 ft

Bathymetric survey

Area

147 acres

Surface area

38 ft max depth
Public access
Limited data

See the measurements Directions Where to stay

Frank Lake in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 12.8 ft visibility. Maximum depth: 38 ft. Surface area: 147 acres.

Wisconsin DNR lists Largemouth Bass as common on Frank Lake. DNR survey details →

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Frank Lake is a 147-acre lake in Vilas County, Wisconsin with a maximum depth of 38 feet. The lake supports 4 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2021-08-03. Methodology: how these readings are compared.

What Frank Lake is good for

From access and monitoring records, not editorial picks.

Clear water12.8 ft of visibility
Fishing4 species recorded
Deep water38 ft surveyed max depth

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Frank 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.

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Water quality measurements for Frank Lake

These are the measurements Wisconsin DNR publishes for Frank 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 12.8 ft. TSI 40.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	12.8ft	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.	40	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Frank Lake

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

DNR fisheries survey

Wisconsin DNR lists Largemouth Bass as common on Frank Lake.

A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Frank Lake’s water-quality measurements separately. 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. 2 stations on file (most recent sample 2021).

Fish Species (DNR-rated)

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

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

Lake Details

Max depth

38 ft

Surface area

147 acres

Public access

Yes

Listed by Wisconsin DNR

Lake Size & Watershed

Watershed (drainage) area

1 sq mi

HydroLAKES / HydroSHEDS

Shoreline

2.5 mi

HydroLAKES / HydroSHEDS

Elevation

1,650 ft

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

Stays via Stay22

Stays near Frank Lake

Compare lakeside cabins, hotels, and vacation rentals near Frank Lake in Vilas 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 Frank Lake

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Fish Species

Panfish Largemouth Bass Northern Pike Walleye

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

Fishing Frank Lake

Nearby Lakes in Vilas County

Aurora Lake—View →Starrett Lake14.5 ft clear—View →Blueberry LakeMesotrophic—View →Nebish Lake16.3 ft clear—View →Razorback Lake15.2 ft clear—View →Plum Lake14.2 ft clear · Oligotrophic—View →

Frequently asked questions about Frank Lake

Where is Frank Lake?: Frank Lake is a lake in Vilas County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Frank Lake?: Frank Lake in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 12.8 ft visibility. Maximum depth: 38 ft. Surface area: 147 acres.
Is Frank Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Frank Lake?: Frank Lake has a maximum depth of 38 feet. The lake covers 147 acres.
What fish are in Frank Lake?: Fish species found in Frank Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. Frank Lake is located in Vilas County, Wisconsin.
What did the DNR fisheries survey find at Frank Lake?: Wisconsin DNR lists Largemouth Bass as common on Frank Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Frank Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Frank Lake?: Public access to Frank Lake is listed as yes on the lake record. 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

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

Collected and reported by

Wisconsin Department of Natural ResourcesWIDNR_WQX3 samples · 2021

Monitoring station identifiers (1)

WIDNR_WQX-643043

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.