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Screened porch with lake light

Kosciusko County lakes

Living on Oswego Lake

The west end of the Tippecanoe system.

At a glance

Size
78 acres
Max depth
37 ft
Average depth
13.7 ft
Watershed
72,847 acres
Location
Plain Township
Boating rule
None listed
Public access
Yes — see below

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01

How big and how deep is Oswego Lake?

Oswego Lake covers about 78 acres and reaches a maximum depth of about 37 feet, with an average depth of about 13.7 feet. Its watershed — the land that drains into it — is about 72,847 acres.

The lake bottom is listed as clay, gravel, muck and sand. That's worth knowing when you picture wading in off your own dock.

  • The west end of the Tippecanoe system.
02

Boating on Oswego Lake

No speed rule is listed for Oswego Lake, and skiing is part of its listed recreation alongside boating and fishing, so skiing and tubing are on the table here.

Rules can change, so confirm current regulations with Indiana DNR before you go.

03

Fishing on Oswego Lake

Species listed for Oswego Lake include black crappie, bluegill, redear, catfish, largemouth bass, northern pike, rock bass and yellow perch.

Indiana publishes fish consumption guidance; you can find links and lake information through the Lilly Center for Lakes & Streams.

04

Public access and beaches

Access: Via the Grassy Creek access: 1 mi S of North Webster on SR 13, then 2 mi W on Armstrong Rd.

Beach: No beach listed.

Listed recreation: boating, fishing and skiing.

05

What connects to Oswego Lake

Water in: From Lake Tippecanoe.

Water out: South to the Tippecanoe River.

06

Nearby towns

Oswego Lake is in Plain Township.

07

What it's like to own a home on Oswego Lake

Every lake has its own personality, and Oswego Lake is no exception. When I help someone buy on a lake, we start with how you actually want to spend your days — and then we look hard at the water itself.

Skiing is part of the listed recreation here, so it's worth thinking about how you'll use the water — and how busy you like it on a summer afternoon.

I'll help you look at shoreline, frontage, the lake bottom near the dock, and how the home works year-round versus as a summer place. And if you're selling on Oswego Lake, I'll help you show off what makes your spot on the water special.

I've renovated and flipped homes myself, so when we tour lake properties I'll help you look beyond the finishes to the quality, the potential and what the place could become.

Kayak bow on glassy water

Heather Sanders · REALTOR®

Thinking about Oswego Lake? Let's talk.

Whether you're buying or selling on Oswego Lake, I'll give you honest, local advice — no pressure.

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Questions people ask about Oswego Lake

How big is Oswego Lake?

Oswego Lake covers about 78 acres, with a watershed of about 72,847 acres.

How deep is Oswego Lake?

Its maximum depth is about 37 feet, and the average depth is about 13.7 feet.

Is Oswego Lake an all-sports lake, or is there a speed limit?

No speed rule is listed, and its listed recreation includes boating, fishing and skiing. Rules can change, so confirm current regulations with Indiana DNR before you go.

Is there a public boat launch on Oswego Lake?

Public access is listed at: Via the Grassy Creek access: 1 mi S of North Webster on SR 13, then 2 mi W on Armstrong Rd.

Is there a public beach on Oswego Lake?

No beach is listed for Oswego Lake.

What fish are in Oswego Lake?

Listed species include black crappie, bluegill, redear, catfish, largemouth bass, northern pike, rock bass and yellow perch.

What lakes is Oswego Lake connected to?

By water, Oswego Lake connects with Lake Tippecanoe.

What town is Oswego Lake near?

Oswego Lake is in Plain Township; the closest area guides are Leesburg, in Kosciusko County, Indiana.

Lake data: Lilly Center for Lakes & Streams, Grace College · Last reviewed October 2026. Figures are approximate.