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Ohio River - John T. Myers Lock and Dam
Tennessee
Located on the Ohio River about 3 miles downstream from Uniontown, Kentucky, at mile 846.0 below Pittsburgh, P…
Ohio River - Markland Pool
Kentucky
An important navigation feature in the Ohio River System. Sightseers may watch the navigation locking process…
Ohio River - McAlpine Pool
Kentucky
Provides a navigational channel between Louisville and Cincinnati that is an integral part of Ohio River navig…
Ohio River - Meldahl Pool
Kentucky
Captain Anthony Meldahl Locks & Dam is located at mile marker 436 on the Ohio River. It creates a 95 mile navi…
Ohio River - New Cumberland Pool
West Virginia
A modern structure with a 1,200- by 110-ft main chamber enables large tows to make quick passage through the l…
Ohio River - Newburgh Pool
Kentucky
One of the projects essential in maintaining the Ohio River navigational channel. This area is along the Lew…
Ohio River - Pike Island Pool
West Virginia
Provides a 30-mile pool on the Ohio River ideal for industry and recreation
Ohio River - Pool 52
Tennessee
Locks and Dam No. 52 is located on the Ohio River, near Brookport, IL, at mile 939 below Pittsburgh, Pennsylva…
Ohio River - Pool 53
Missouri
Locks and Dam No. 53 is located on the Ohio River, upstream of Mound City, IL.
Ohio River - Racine Pool
West Virginia
Provides a navigable pool extending 34 miles up the Ohio River to Belleville Locks and Dam. Take I-77 to Riple…
Ohio River - Robert. C. Byrd Pool
West Virginia
Visitor center has viewing area overlooking lock chamber. Visitors can view boats locking through and see exh…
Ohio River - Smithland Pool
Tennessee
The Smithland Navigation Project is located on the Ohio River 918.5 River Miles below Point Bridge, Pittsburgh…
Ohio River - Willow Island Pool
West Virginia
This facility replaced three obsolete locks & dams and provides a navigable pool 35.3 river miles to Hannibal …
Ohio River Islands National Wildlife Refuge
West Virginia
The Ohio River Islands National Wildlife Refuge was established in 1990 to protect, conserve, and restore habi…
Oil Region National Heritage Area
Pennsylvania
Oil Region National Heritage Area in northwestern Pennsylvania tells of the world’s first successful commercia…
Ojito Wilderness Area
New Mexico
Ojito Wilderness encompasses more than 11,000 acres of rugged high desert southwest of San Ysidro, New Mexico.…
Ojito Wilderness Study Area
New Mexico
The Ojito WSA is located adjacent to, and is under consideration for addition to, the Ojito Wilderness. Please…
Okanogan-Wenatchee National Forest
Washington
Okanogan-Wenatchee National Forest
Washington
Stretching across 3.8 million acres from the Canadian border to Goat Rocks along the eastern Cascades, Okanoga…
Okatibbee Lake
Mississippi
Okatibbee Lake is an 11,000-acre multi-purpose project. The Corps of Engineers maintains one full service cam…
Okefenokee National Wildlife Refuge
Georgia
The Okefenokee National Wildlife Refuge was established in 1937 as a "refuge and breeding ground for migratory…
Oklahoma City National Memorial
Oklahoma
The outdoor symbolic memorial is a place of quiet reflection, honoring victims, survivors, rescuers, and all w…
Oklahoma City National Memorial
Oklahoma
The outdoor symbolic memorial is a place of quiet reflection, honoring victims, survivors, rescuers, and all w…
Old Growth Ridge National Recreation Trail
Oregon
Beginning in the Whittaker Creek Campground, the steep Old Growth Ridge Trail ascends 750 vertical feet over a…