North Branch Mahantango Creek
| North Branch Mahantango Creek | |
|---|---|
| Basin features | |
| Main source | Shade Mountain in West Perry Township, Snyder County, Pennsylvania |
| River mouth | Mahantango Creek in Perry Chapman Townships, Snyder County, Pennsylvania 438 ft (134 m) 40°38′50″N 76°57′56″W / 40.6472°N 76.9656°WCoordinates: 40°38′50″N 76°57′56″W / 40.6472°N 76.9656°W |
| Progression | Mahantango Creek → Susquehanna River → Chesapeake Bay |
| Basin size | 37 sq mi (96 km2) |
| Tributaries |
|
| Physical characteristics | |
| Length | 13.3 mi (21.4 km) |
North Branch Mahantango Creek is a tributary of Mahantango Creek in Snyder County, Pennsylvania, in the United States. It is 13.3 miles (21.4 km) long and flows through West Perry Township, Perry Township, and Chapman Township. The creek's mouth is at 438 feet (134 m) above sea level.
The ratio of nitrogen to phosphorus in North Branch Mahantango Creek is 18 to 1. The annual loads of sediment, nitrogen, and phosphorus in the part of the creek that is considered impaired by the Pennsylvania Department of Environmental Protection are 2,963,043 pounds (1,344,014 kg), 32,045.85 pounds (14,535.75 kg), and 1,807.092 pounds (819.683 kg), respectively. The main rock types in the watershed are shale, interbedded sedimentary rock, carbonate rock, and sandstone. The creek's watershed has an area of approximately 37 square miles.
North Branch Mahantango Creek begins in West Perry Township, Snyder County, on Shade Mountain in Bald Eagle State Forest. It flows south-southeast off Shade Mountain and then turns east and flows in Heister Valley between Chestnut Ridge and Lime Ridge. It receives a number of small and unnamed tributaries from the north and after several miles exits West Perry Township. Upon leaving West Perry Township, the creek enters Perry Township and continues flowing east for a short distance. It then reaches the community of Mount Pleasant Mills and turns southeast. The creek crosses Pennsylvania Route 35 and begins paralleling Pennsylvania Route 104, turning south shortly thereafter. It passes Potato Valley, where an unnamed tributary enters it from the west and then passes Buckwheat Valley (where another unnamed tributary enters it from the west) and the community of Shadle. It continues south, passing the Long Woods and receiving a tributary from Trout Valley. The creek then reaches Aline Creek and the community of Aline. A short distance downstream, it reaches the border between Perry Township and Chapman Township. The creek then flows along the border for a few miles, running parallel to Pennsylvania State Game Lands #194. It then reaches its confluence with Mahantango Creek.
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