Koontz
Natural Lake · Marshall County, Indiana
Koontz covers 340 acres in Marshall County, in the glacial lakes district of northern Indiana. The nearest city is Plymouth. Walleye are a major draw for this water. The lake supports 8 documented species including Walleye, Northern Pike, Largemouth Bass, Bluegill, Channel Catfish, and more. The available depth map shows contour lines, weed beds, and structural features — last surveyed in 2011. Ice fishing is popular in winter months, while open-water season peaks from May through October. Plan your trip with the depth map and local guide listings below.
Depth Maps
Bathymetric maps from the Indiana DNR Division of Fish & Wildlife. These maps show depth contours, vegetation, and bottom structure.
Map & Directions
Get DirectionsShowing 14 nearby bait & tackle shops on the map.
Nearby Bait & Tackle
Hoosier Bait Company
Millersburg, IN
★ 5Kelley's Bait & Tackle
Lakeville, IN
★ 4.7Pretty Lake Golf Club
Plymouth, IN
★ 4.6Canadian Fly-In Fishing
Michigan City, IN
★ 5Chief's Bait Shop
Michigan City, IN
★ 4.6Chubbs bait shop
North Judson, IN
★ 5Cy's Tackle Shop
Rochester, IN
★ 5Double D Fireworks/Bass Lake Bait and Tackle
Knox, IN
★ 4.6Nearby Marinas
Fish Species
Species known to inhabit Koontz. Click any species for a full fishing guide.
Other Lakes in Marshall County
Plan Your Trip to Koontz
- Weather forecast for Koontz — check wind, rain, and temperature before you go
- GPS: 41.4182°N, 86.4905°W — Get Directions
- Check the latest DNR fishing report for current conditions
- Review Indiana fishing regulations for season dates and limits
- An Indiana fishing license is required for ages 18+ — buy online at IN.gov
Data sourced from Indiana DNR Division of Fish & Wildlife. Last verified: March 18, 2026. Learn how we maintain this data.