Ohio / Grand Lake–Saint Marys /

Grand Lake St. Marys State Park - Mercelina Park

Boat ramp · on Grand Lake–Saint Marys · near Celina · Ohio

Past algal blooms

Harmful algal blooms reported on Grand Lake–Saint Marys 1.5 km from this launch (state reports compiled by U.S. EPA): 2015 to 2026.

state reports compiled by U.S. EPA · checked October 18, 2026

Status not reported No closure has been posted for this launch, but its agency does not publish open or closed status. Check with the managing agency before you tow.

At the launch

Type
Boat ramp
Fee
Free
Motors
No horsepower limit
Ramp lanes
2
Docks
1
Ramp surface
Concrete
Trailer parking
8 spaces
Car parking
31
Restrooms
Flush toilet
Season
All Year
Managed by
City of Celina
Website
ci.celina.oh.us
Coordinates
40.54463, -84.56767

Directions (Google) Apple Maps

Depth contours in feet from Ohio DNR. Not for navigation.

Conditions

Lake level

Latest reading loads here; without it, see the USGS page below.

USGS gauge Grand Lake St Marys near Celina OH, 0.7 mi from this launch on Grand Lake–Saint Marys: lake level, a reading every 15 minutes. Readings and history at USGS.

On Grand Lake–Saint Marys

Reservoir in Ohio. All launches on Grand Lake–Saint Marys.

Community

Where people who use Grand Lake–Saint Marys talk about it.

Nearby launches

Sources

Why it is listed as public: listed by Ohio DNR Boater and Stream Access (facility guide and paddling access) and Ohio DNR Watercraft Motorized Lake Facilities (facility guide with amenity detail). Something wrong, or is this launch private? Send a correction; it goes to a person.