Where is Upper Post Lake?

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

How deep is Upper Post Lake?

Upper Post Lake has a maximum depth of 14 feet and an average depth of 6 feet. The lake covers 766 acres.

Are there boat ramps on Upper Post Lake?

Upper Post Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Upper Post Lake - South, Upper Post Lake - West. Public access is listed as yes.

Can I fish at Upper Post Lake?

Upper Post Lake has 2 documented boat landings 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.

Upper Post Lake

Langlade County, Wisconsin766 acresView map Directions

No nutrient or algae sampling on record from Wisconsin DNR for this lake.

Max depth

14 ft

Bathymetric survey

Area

766 acres

Surface area

Shoreline

7.6 mi

Measured length

Impaired · Nutrients (phosphorus, nitrogen)
14 ft max depth
Public access

See the measurements Directions Where to stay

Upper Post Lake in Langlade County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 14 ft. Surface area: 766 acres.

Loading map…

Upper Post Lake is a 766-acre lake in Langlade County, Wisconsin with a maximum depth of 14 feet (6-foot average). Limited fish-species data available. Public access is available with 2 public boat landings.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water. Methodology: how these readings are compared.

What Upper Post Lake is good for

From access and monitoring records, not editorial picks.

Boat launch2 documented ramps

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Upper Post Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Upper Post 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 Rhinelander →

Get alerts for Upper Post Lake →

Water quality measurements for Upper Post Lake

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

No clarity data. TSI undefined.

Ask about Upper Post Lake

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

Lake Details

Max depth

14 ft

Average depth

6 ft

Surface area

766 acres

Shoreline

7.6 mi

Public access

Yes

Listed by Wisconsin DNR

Recreation & Access

Boat Landings

Yes

Public Access

Upper Post Lake - SouthPublic
Upper Post Lake - WestPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Upper Post Lake

Compare lakeside cabins, hotels, and vacation rentals near Upper Post Lake in Langlade 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 Upper Post 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 Upper Post Lake’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Upper Post Lake

→ Upper Post Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Upper Post Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Recreation.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit WI10000706 · Official waterbody report

Nearby Lakes in Langlade County

Wamin Lake2.5 miView →Lower Post Lake2.4 miView →Aninnan Lake3.2 miView →Miniwakan Lake4.5 miView →Loon Lake—View →Spider Creek Flowage4 miView →

Frequently asked questions about Upper Post Lake

Where is Upper Post Lake?: Upper Post Lake is a lake in Langlade County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Upper Post Lake?: Upper Post Lake in Langlade County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 14 ft. Surface area: 766 acres.
Is Upper Post Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Upper Post Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Upper Post Lake?: Upper Post Lake has a maximum depth of 14 feet and an average depth of 6 feet. The lake covers 766 acres.
Are there boat ramps on Upper Post Lake?: Upper Post Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Upper Post Lake - South, Upper Post Lake - West. Public access is listed as yes.
Can I fish at Upper Post Lake?: Upper Post Lake has 2 documented boat landings 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.