Clinton, Armstrong County, Pennsylvania

Allegheny River Lock and Dam No. 6 is a historic lock and fixed-crest dam complex located at Bethel Township and South Buffalo Township in Armstrong County, Pennsylvania. It was built between 1927 and 1928 by the United States Army Corps of Engineers, and consists of the lock, dam, esplanade, Operations Building, and two locktenders' houses. The lock measures 56 feet by 360 feet, and has a lift of 12.4 feet. The dam measures approximately 20 feet high and 992 feet long. The Operations Building, or powerhouse, is a utilitarian two-story building in a vernacular early-20th century revival style. The locktenders' houses are identical two-story, brick dwellings on concrete foundations. The lock and dam were built by the U.S. Army Corps of Engineers as a part of an extensive system of locks and dams to improve navigation along the Allegheny River.It was listed on the National Register of Historic Places in 2000.

Johnetta is an historic community that is located in Gilpin Township in Armstrong County, Pennsylvania.

Nicholson Island is an alluvial island in the Allegheny River in South Buffalo Township, Armstrong County in the U.S. state of Pennsylvania. The island is situated across from Bethel Township.The elevation of Nicholson Island is 768 feet above sea level.Emergency personnel rescued stranded boaters from the island on July 24, 2015.

McVille is an unincorporated community in South Buffalo Township, Armstrong County, Pennsylvania, United States. The community is 6.6 miles (10.6 km) northeast of Freeport along PA-128, north of Nicholson Run. McVille Airport lies 0.7 miles (1.1 km) to the northeast on Ford City Road at 40°44′07″N 79°35′57″W. McVille Union Cemetery is located nearby, on the north side of McVille Road, at 40°43′39″N 79°36′18″W.

McVille Airport (FAA LID: 6P7) is a privately owned, public use airport located six nautical miles (11 km) northeast of the central business district of Freeport, a borough in Armstrong County, Pennsylvania, United States.

Bethel Township is a township in Armstrong County, Pennsylvania, United States. The population was 1,096 at the 2020 census, a decrease from the figure of 1,183 tabulated in 2010.

Cadogan Township is a township in Armstrong County, Pennsylvania, United States. The population was 346 at the 2020 census, an increase over the figure of 344 tabulated in 2010.

Cadogan is an unincorporated community in Cadogan Township, Armstrong County, Pennsylvania, United States. The community is located along the Allegheny River and Pennsylvania Route 128, 5.3 miles (8.5 km) southwest of Kittanning. Cadogan has a post office with ZIP code 16212.

Ross Island is an alluvial island in the Allegheny River in Manor Township, Armstrong County, in the U.S. state of Pennsylvania. The island is situated across from Cadogan and North Buffalo townships.The elevation of Ross Island is 768 feet above sea level.

Murphy Island (also known as Donley Island) is a privately owned alluvial island in the Allegheny River in Gilpin Township, Armstrong County in the U.S. state of Pennsylvania. The island is situated across from South Buffalo Township.The elevation of Murphy Island is 758 feet above sea level.

Crooked Creek is a tributary of the Allegheny River in both Armstrong and Indiana counties in the U.S. state of Pennsylvania.Several covered bridges span the stream and its tributaries in Indiana County. The Thomas Covered Bridge crosses Crooked Creek in Armstrong Township. The Harmon's Covered Bridge crosses the South Branch Plum Creek and the Trusal Covered Bridge crosses Plum Creek, tributaries of Crooked Creek, in Washington Township.

South Buffalo Township is a township in Armstrong County, Pennsylvania, United States. The population was 2,713 at the 2020 census, an increase from the figure of 2,636 tabulated in 2010.