Oswego Lake

Plain Township, IN
Lake Facts

Overview Information

Lake Size

78 Acres

Max Depth

37 Feet

Average Depth

13.7 Feet

Watershed Size

72847 Acres


Flow from Lake Tippecanoe


Flow south to Tippecanoe River


Public; enter through Grassy Creek access; 1 mi S. of N Webster on SR 13, 2 mi W on Armstrong Rd


Boat, Fish, Ski

Lake Bottom

Clay, Gravel, Muck, Sand

Best Fishing

Black Crappie, Bluegill, Redear, Catfish, Largemouth Bass, Northern Pike, Rock Bass, Yellow Perch

Lakefront/ Channelfront Total Gross Assessed Value

Tippecanoe Chain (Tippe, James, Oswego)- $343,875,500

Data and research

Oswego Lake


12-Digit Watershed Map

Lilly Center for Lakes & Streams

See the boundaries of Lake Tippecanoe’s watershed.

Watershed map

Aerial Map

Lilly Center for Lakes & Streams

See Oswego Lake’s bathymetric map.

Aerial Map

Original Research from the Lilly Center

2021 Your Lake, Your Story

Lilly Center for Lakes & Streams

Your Lake, Your Story tells the story of seven lakes (including the Tippecanoe chain) from the perspective of 15 families that are much like yours. After reading these books, you’ll know fascinating trivia and have home-grown recipes. Woven throughout, you’ll find original Lilly Center research about the lakes’ health.

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2017 Your Lake, Your Story

Lilly Center for Lakes & Streams

Your Lake, Your Story combines scientific data with personal anecdotes to tell the story of your lake.

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2015 Beneath the Surface

Lilly Center for Lakes & Streams

This is the original Beneath the Surface report, published in 2015. Learn about your lake’s health and compare it to other lakes in the county.

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2014 Blue-Green Algae Study Final Report & Appendix

Lilly Center for Lakes & Streams

This paper synthesizes three years of blue-green algae research (2010-13) conducted by the Lilly Center. We have continued to study the algae and its toxin in-depth.

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2013 Lake Economic Impact Study: Property Value Report

Lilly Center for Lakes & Streams

When combined with additional property taxes generated due to lake presence, the total economic impact of Kosciusko County lakes is more than $313,383,000 annually.

Get the study

    Need more lake research?

    Additional studies and fact sheets are just one click away. Learn about boating, zebra mussels, blue-green algae and more!