How's Your River

Explore
Pricing
Login
Sign Up

› Rivers & Lakes › Ohio

Lake OH

Grand Lake-St Marys

Ohio • 40.5455, -84.4346

Sign in to Monitor

Elevation Profile

Rain Radar

Elevation Profile

Data from USGS & NOAA for informational purposes only. More

Monitor

View Full Details

Access Sites on Grand Lake-St Marys

There are 8 boat ramps, launches, and public access points on Grand Lake-St Marys.

Grand Lake Saint Marys State Park - Boat Club Ramp (Boat Ramp)
Grand Lake Saint Marys State Park - Campground Ramp (Boat Ramp)
Grand Lake Saint Marys State Park - Fries Channel Ramp (Boat Ramp)
Grand Lake Saint Marys State Park - Its It Ramp (Boat Ramp)
Grand Lake Saint Marys State Park - Marina Ramp (Boat Ramp)
Grand Lake Saint Marys State Park - Mercelina Park (Boat Ramp)
Grand Lake Saint Marys State Park - West Bank Ramp (Boat Ramp)
Grand Lake Saint Marys State Park - Windy Point (Boat Ramp)

Select Monitoring Location

This is a large river. Please select a specific location along the river to monitor for your daily analysis.

Selected Location Name

This name will help you identify this spot later.

How's Your River

Check conditions on any river, lake, or tidal station in the US before you go. Built on USGS, NOAA, and American Whitewater data.

Explore

Map
Rivers & Lakes
Gauges
Access Sites
Tidal Stations
Whitewater

Account

Pricing
Log In
Sign Up

About

Privacy
Terms

Popular Rivers: Mississippi · Colorado · Columbia · Missouri · James · Snake · Potomac · Rio Grande · Delaware · Susquehanna · Hudson · Chattahoochee

© 2026 How's Your River

Data from USGS, NOAA, and American Whitewater