Portage Township, Cambria County, Pennsylvania  Portage Township is a township in Cambria County, Pennsylvania, United States. It surrounds the borough of Portage. The township population was 3,640 at the 2010 census. It is part of the Johnstown, Pennsylvania Metropolitan Statistical Area. The stone-arch Bridge in Portage Township was listed on the National Register of Historic Places in 1988. The Sonman Mine explosion occurred here in 1940, killing 63 coal miners. Portage Township is located in southeastern Cambria County around the coordinates . The township surrounds the borough of Portage and touches the borough of Cassandra on its northeast border. The unincorporated community of Spring Hill is in the southwest part of the township, just south of Portage borough. The southeast border of the township follows the Blair County line and approximately follows the crest of the Allegheny Front, the height of land between the Susquehanna River basin to the east and the Ohio River drainage to the west. The Little Conemaugh River flows west through the northern part of the township, leading to the Conemaugh River in Johnstown. Portage Township is approximately southeast of Ebensburg, the Cambria County seat, northeast of Johnstown, and southwest of Altoona. According to the United States Census Bureau, the township has a total area of , of which is land and , or 0.39%, is water. Due to the mountainous terrain in and around Portage Township, it has (along with other townships in the area) become host to the largest wind farm in Pennsylvania. The Allegheny Ridge Wind Farm began operating in the first quarter of 2007 and will eventually be generating 150MW of power, or roughly enough to power 75,000 homes. This wind farm consists of 75 2MW Gamesa G87 wind turbines. A portion of the Pennsylvania State Game Lands Number 26 is located in the southwest end of the township. As of the census of 2000, there were 3,906 people, 1,458 households, and 1,077 families residing in the township. The population density was 160.6 people per square mile (62.0/km²). There were 1,552 housing units at an average density of 63.8/sq mi (24.6/km²). The racial makeup of the township was 99.10% White, 0.20% African American, 0.03% Native American, 0.15% Asian, 0.10% from other races, and 0.41% from two or more races.