Catawissa Mountain's southeastern edge is at the border between Luzerne County and Columbia County. From here, it runs northwest through Beaver Township and Roaring Creek Township to the community of Catawissa. A spur of the mountain can be said to cross the Susquehanna River and turn west into Montour County, where it ceases to be a mountain. The peak height of Catawissa Mountain is above sea level. However, numerous places on the mountain rise to over above sea level. The mountain is the fifth-highest mountain in Columbia County, behind Red Rock Mountain, Central Mountain, Chimneystack Rock, and Buck Mountain. The community of Catawissa is close to Catawissa Mountain. Main Township and Locust Township are also located near the mountain.
Geology
Catawissa Mountain is relatively short and rounded, especially compared to nearby mountains such as Huntington Mountain, which are straight and narrow ridges. Catawissa Mountain has some rocky outcroppings. There are two zigzagging outcroppings of the Pocono Formation on Catawissa Mountain. These outcroppings pass through the mountain and south into Schuylkill County. They also have spurs and knobs at each point where they zigzag. The Northumberland Syncline passes through a spur of the mountain. The mountain also has an elbow which is part of a double synclinal that heads eastward to Nescopeck Mountain. A coarse and hard sandstone can be found on Catawissa Mountain. Sandstone of the Pocono Formation occurs on the summit of the mountain. Catawissa Mountain is part of a chain of mountains running from beyond Dauphin to Carbondale. The mountain is located near both Nescopeck Mountain and Little Mountain. The meeting point of Catawissa Mountain and Nescopeck Mountain is on the edge of a canoe valley.
Hydrology
Several tributaries of the lower reaches of Catawissa Creek originate on Catawissa Mountain. A number of these tributaries are affected by acid deposition. Roaring Creek is also close to the western side of the mountain. Catawissa Creek cuts a gap between Catawissa Mountain and Nescopeck Mountain at the community of Mainville. The creek also flows parallel to Catawissa Mountain downstream of this gap. There are vernal pools on Catawissa Mountain in Beaver Township and Roaring Creek Township.
History and etymology
The word Catawissa comes from the Algonquin word Gatawissi, meaning "growing fat". There was at least one Native American village in Catawissa, near Catawissa Mountain, and possibly several villages during different time periods. Historically, a road known as the Mine Gap Road climbed up Catawissa Mountain. In the past, a road led from the valley of the Schuylkill River to Catawissa via the southern part of the mountain. The Reading Road also passed from Catawissa to Philadelphia via the mountain. J.H. Beers stated in his 1915 book Historical and Biographical Annals of Columbia and Montour Counties, Pennsylvania that the height of Catawissa Mountain was estimated to be. The same author described the mountain as "majestic" and "towering" in his book. Since at least 2001, the Columbia-Montour Amateur Radio Club has had a receiver on Catawissa Mountain.
The Pennsylvania State Game Lands Number 58 are located on Catawissa Mountain. Use of all terrain vehicles on the mountain is increasing, as of 2004. The Columbia County Natural Heritage Inventory of 2004 suggested blocking all terrain vehicle trails near the mountain's vernal pools.