Grand Lake St. Marys Seaplane Base is a public use seaplane

Seaplane

A seaplane is a fixed-wing aircraft capable of taking off and landing on water. Seaplanes that can also take off and land on airfields are a subclass called amphibian aircraft...

 base located five nautical miles (9 km) southwest of the central business district

Central business district

A central business district is the commercial and often geographic heart of a city. In North America this part of a city is commonly referred to as "downtown" or "city center"...

 of St. Marys

St. Marys, Ohio

St. Marys is a city in Auglaize County, Ohio, United States. The population was 8,342 at the 2000 census. It is included in the Wapakoneta, Ohio, Micropolitan Statistical Area.-History:...

, a city in Auglaize County

Auglaize County, Ohio

As of the census of 2000, there were 46,611 people, 17,376 households, and 12,771 families residing in the county. The population density was 116 people per square mile . There were 18,470 housing units at an average density of 46 per square mile...

, Ohio

Ohio

Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is owned by the Ohio Division of Parks & Recreation and is located on Grand Lake St. Marys

Grand Lake St. Marys

Grand Lake Saint Marys State Park is an Ohio state park, west of St. Marys, and south-east of Celina, south-west of Lima in the north-western part of the U.S. state of Ohio.Grand Lake covers in Mercer and Auglaize counties...

, a lake and state park

State park

State parks are parks or other protected areas managed at the federated state level within those nations which use "state" as a political subdivision. State parks are typically established by a state to preserve a location on account of its natural beauty, historic interest, or recreational...

 in Ohio.

Facilities and aircraft

Grand Lake St. Marys Seaplane Base covers an area of 643 acres (260.2 ha) at an elevation

Elevation

The elevation of a geographic location is its height above a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface ....

 of 871 feet (265 m) above mean sea level. It has one seaplane landing area designated 9/27 and measuring 7,000 x 4,000 ft (2,134 x 1,219 m).