Loon Lake is a lake in Whitley County, Indiana. Its water-quality measurements are published by IDEM and shown on this page as reported.

How deep is Loon Lake?

Loon Lake has a maximum depth of 91.9 feet. The lake covers 226 acres.

Are there boat ramps on Loon Lake?

Loon Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Tri-County Fish & Wildlife Area. Public access is listed as yes.

Can I fish at Loon Lake?

Loon 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 Indiana's fish and wildlife agency, so check its current regulations before you go.

Loon Lake

Whitley County, Indiana226 acresView map Directions

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

Max depth

91.9 ft

Bathymetric survey

Area

226 acres

Surface area

Shoreline

5 mi

Measured length

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

See the measurements Directions Where to stay

Loon Lake in Whitley County, Indiana has water-quality measurements published by IDEM, shown here as reported. Maximum depth: 91.9 ft. Surface area: 226 acres.

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Loon Lake is a 226-acre lake in Whitley County, Indiana with a maximum depth of 92 feet. Limited fish-species data available. Public access is available with 1 public boat landing.

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

What Loon Lake is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp
Deep water91.9 ft surveyed max depth

Swimming conditions

No reading

Recreation use not supported

Nutrient and algae readings are not a swimming clearance. Loon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.

Whether Loon Lake is safe to swim in today is a call for the Indiana Department of Environmental Management and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Loon Lake

These are the measurements IDEM publishes for Loon 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 Loon Lake

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

Lake Details

Max depth

91.9 ft

Surface area

226 acres

Shoreline

5 mi

Public access

Yes

Listed by IDEM

Recreation & Access

Boat Landings

Yes

Public Access

Tri-County Fish & Wildlife AreaPublic

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

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Stays near Loon Lake

Compare lakeside cabins, hotels, and vacation rentals near Loon Lake in Whitley County, Indiana — 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.

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Fishing Loon Lake

→ Loon Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Loon Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Nutrients (phosphorus, nitrogen)

Designated uses not supporting: Recreation.

Source: EPA ATTAINS assessment unit INB06P1060_00 · Official waterbody report

Nearby Lakes in Whitley County

Old Lake0.8 miView →Goose LakeMesotrophic2.5 miView →Troy Cedar Lake3.1 miView →Crooked Lake3.1 miView →Shriner LakeMesotrophic—View →Cedar LakeMesotrophic—View →

Frequently asked questions about Loon Lake

Where is Loon Lake?: Loon Lake is a lake in Whitley County, Indiana. Its water-quality measurements are published by IDEM and shown on this page as reported.
What is the water quality of Loon Lake?: Loon Lake in Whitley County, Indiana has water-quality measurements published by IDEM, shown here as reported. Maximum depth: 91.9 ft. Surface area: 226 acres.
Is Loon Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Loon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Loon Lake?: Loon Lake has a maximum depth of 91.9 feet. The lake covers 226 acres.
Are there boat ramps on Loon Lake?: Loon Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Tri-County Fish & Wildlife Area. Public access is listed as yes.
Can I fish at Loon Lake?: Loon 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 Indiana's fish and wildlife agency, so check its current regulations before you go.