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ODNR owns and manages more than 640,000 acres (260,000 ha) of land, including 75 state parks, 23 state forests, 136 state nature preserves, and 150 wildlife areas. The department has jurisdiction over more than 61,500 mi (99,000 km) of inland rivers and streams, 451 mi (726 km) of the Ohio River , and 2.29 million acres (9,300 km 2 ) of Lake Erie .
The Hanging Rock Ponds are a set of ponds near Hanging Rock, a village along the Ohio River in western Lawrence County, Ohio, United States.The ponds are the result of strip mining, or surface mining for iron ore or coal during the 1960s and 1970s.
The Egypt Valley Wildlife Area is a 14,300 acres (5,800 ha) former surface mining area in northwestern Belmont County Ohio, United States.Since the mid-1990s, the Ohio Department of Natural Resources has administered the area.
The Whiskey Island mine is a salt mine in downtown Cleveland, Ohio owned by Cargill Deicing Technology. It is one of the largest salt mines in the world [1] and one of two in the Cleveland area, the other being Morton Salt's Fairport Harbor mine to the east. [2] It is also one of three mines in the United States owned by Cargill. [3]
The park was acquired in 1961. A large proportion of the land was cleared for coal mining. Nevertheless, the extraction of acid mine water is minimal because of the neutralizing effect of limestone deposits. Most of the uncultivated land is located on ridges or in valleys and is covered with forest.
In 2010, Ohio Valley Coal Company excavated a room-and-pillar coal mine 500 feet under the woods. Within a year after the mining was complete, half of the old-growth trees—mostly white oaks—had died, due to the changes in hydrology caused by the coal mine.
Name County Size Image Year established; acres km 2; A. W. Marion State Park: Pickaway: 454: 1.84: 1950 Adams Lake State Park: Adams: 96: 0.39: 1950 Alum Creek State Park
Headlands Beach State Park is at the northern terminus of State Route 44 and the Buckeye Trail. [5] The park is between the Mentor Marsh and the Grand River.It is next to Fairport Harbor Coast Guard station and a Morton Salt mine [6] and abuts two other protected areas, Headlands Dunes State Nature Preserve to the east and Mentor Marsh State Nature Preserve to the west.