Contour map · Mercer County, Ohio
Grand Lake St Mary's
14 ftdeepest spot
13,400acres
2 ftcontour lines
What you get on Grand Lake St Mary's
- Every drop-off on a full contour map, lines every 2 ft, from the Ohio DNR survey.
- Drop a pin anywhere and see the depth under it.
- Riggs tells you where to fish and what to throw today, from the weather, water temp, likely species and the odds.
- Follow My Boat (Pro) shows the depth under your boat as you move.
Free to download. A free pick every day; contour maps with Pro or Guide.
Grand Lake St Mary's at a glance
| Location | Mercer County, Ohio |
|---|---|
| Size | 13,400 acres |
| Deepest spot | 14 ft |
| Contour lines | every 2 ft |
| Survey | Ohio DNR |
Boat ramps and marinas on Grand Lake St Mary's
34 boat ramps.
4 marinas.
In the app, every one is on the map, next to the contour lines.
Ramp and marina locations © OpenStreetMap contributors (ODbL).
Lakes near Grand Lake St Mary's
- Lake Loramie13 mi
- Williams Reservoir20 mi
- Bresler Reservoir20 mi
- Van Wert City Reservoir 222 mi
- Van Wert City Reservoir 123 mi
- Delphos Gillmor Reservoir26 mi
Contour map: Ohio DNR. Rigology shows the agency's survey and is not affiliated with it.