| Grand Lake St. Marys State Park | |
|---|---|
 Sunset over Grand Lake St. Marys | |
  Grand Lake St. Marys State Park Location in Ohio  Grand Lake St. Marys State Park Grand Lake St. Marys State Park (the United States) | |
| Location | Mercer and Auglaize counties, Ohio, United States |
| Coordinates | 40°31′36″N 84°30′03″W / 40.52667°N 84.50083°W[1] |
| Area | Land: 591 acres (239 ha) Water: 13,500 acres (5,500 ha)[2] |
| Elevation | 869 ft (265 m)[1] |
| Established | 1949 |
| Administered by | Ohio Department of Natural Resources |
| Designation | Ohio state park |
| Named for | Grand Lake and St. Marys |
| Website | Official website  |
| Grand Lake | |
|---|---|
 | |
| Location | Mercer / Auglaize counties, Ohio, United States |
| Coordinates | 40°31′36″N 84°30′03″W / 40.52667°N 84.50083°W[1] |
| Type | Artificial lake |
| Primary inflows | Coldwater Creek |
| Primary outflows | Beaver Creek |
| Basin countries | United States |
| Max. length | 8.2 mi (13.2 km) |
| Max. width | 2.8 mi (4.5 km) |
| Surface area | 12,896 acres (5,219 ha)[3] |
| Average depth | 5–7 ft (1.5–2.1 m)[3] |
| Shore length1 | 74 mi (119 km)[3] |
| Surface elevation | 871 ft (265 m)[3] |
| Islands | Safety Island |
| 1 Shore length is not a well-defined measure. | |
Grand Lake St. Marys State Park is a public recreation area located on 13,500-acre (5,500 ha) Grand Lake in Mercer and Auglaize counties, Ohio.[4] Grand Lake is the largest inland lake in Ohio in terms of area, but is shallow, with an average depth of only 5–7 feet (1.5–2.1 m). The state park is open for year-round recreation, including boating, fishing, swimming and hunting. The park consists of the lake and park facilities scattered all around the shore intermingled with private property and a facility operated by Wright State University.[3] It is west of St. Marys, and southeast of Celina, 23 miles (37 km) southwest of Lima in the northwestern part of the state.[1]
- ^ a b c d "Grand Lake". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
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