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Grand Lake

Boat Ramps
10
Access Points
36
Species
23

Grand Lake, also known as Grand Lake St. Marys, is the largest inland lake located entirely in Ohio, spanning approximately 13,500 acres with 52 miles of shoreline. Originally constructed from 1837 to 1845 as a feeder reservoir for the Miami-Erie Canal, it was the world's largest man-made lake at the time of its completion. This shallow lake, with most areas less than 7 feet deep, features a soft silt bottom with some isolated areas of sandy or clay bottoms where wave action keeps the bottom cleaner. Rocky rip-rap has been added to reduce shoreline erosion, creating excellent fish habitat alongside numerous boat docks, shoreline brush, and fallen trees.

Fishing spots, boat ramps & amenities

Learn how to get on Grand Lake. Uncover great fishing access points, boat ramps, and all the facilities you need for an unforgettable day on the water. Some locations shown may border or include private property. Always check property boundaries and applicable regulations before visiting. onWater's Public & Private Land layer can help you plan your access with confidence.

Grand Lake St Marys State Park Fishing Pier

Grand Lake St Marys State Park Fishing Pier

Access Point
Grand Lake St Marys State Park Fishing Pier

Grand Lake St Marys State Park Fishing Pier

Access Point
Grand Lake St Marys State Park Fishing Pier

Grand Lake St Marys State Park Fishing Pier

Access Point
Grand Lake St Marys State Park Fishing Pier

Grand Lake St Marys State Park Fishing Pier

Access Point
Grand Lake St Marys State Park Fishing Access

Grand Lake St Marys State Park Fishing Access

Access Point
Grand Lake St Marys State Park Fishing Access

Grand Lake St Marys State Park Fishing Access

Access Point
Park Grand Fishing Access

Park Grand Fishing Access

Access Point
It's It Truck And Trailer Parking

It's It Truck And Trailer Parking

Access Point
Grand Lake St Marys State Park Fishing Access

Grand Lake St Marys State Park Fishing Access

Access Point
Pullman Bay Park

Pullman Bay Park

Access Point

Know where you can legally fish on Grand Lake

See public and private land boundaries along the water, turn on private parcels with owner details to know where permission is required, and find land-trust parcels that offer permitted fishing access.

Ohio licenses and regulations

Ohio Boating Regulations

When using any type of watercraft to access a body of water, it is important to follow all federal, state, and local rules and regulations. These rules and regulations include boat permitting and licensing, invasive species inspections and stamps, life jacket and PFD rules, motor size and horsepower restrictions, noise limitations, restrictions on personal watercraft, and many more. Visit the web link below for the most current rules and regulations for this body of water.

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Ohio Fishing License

Persons under 16 years of age are not required to purchase a fishing license.

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Ohio Fishing Regulations

This river has a variety of species and regulations, including potential floating and/or watercraft restrictions. Because this river is specially managed for species, seasons, angling methods, and watercraft, it is strongly encouraged you check all federal, state, and local regulations before fishing. Visit any of the links below, inquire locally, or contact a local fly shop to learn current regulations and restrictions.

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Ohio Stream Access Laws

Ohio does not believe there is a precise definition for navigability, so it is determined on a case-by-case basis. However, the state generally accepts waterways capable of recreational boating, with a history of recreation and with public access. The public is allowed to recreate freely on all navigable waters but streambeds are not publicly owned.

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Take Grand Lake with you

The onWater Fish app keeps this water's access points, species and conditions in your pocket, with the tools you use once you're there.

  • Use the map without signal

    Download the map around Grand Lake to use it offline when coverage drops.

  • Log your catches here

    Keep a private fishing journal for Grand Lake to find where and when fish are biting for you.

  • HD depth charts from Garmin

    Find drop offs, ledges, channels, points and shallow flats with Garmin depth charts in the app.

Get the onWater Fish app

Free on iOS and Android

Water and weather conditions (10 day forecast)

See the best times to fish Grand Lake and check the forecast before you go.

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