	Rolling Green Run begins in a small valley in Monroe Township. It flows west for a few tenths of a mile and enters a larger valley. Here, the stream turns south-southeast for several tenths of a mile before turning southeast. Several tenths of a mile further downstream, it leaves the valley, receives two unnamed tributaries (one from the left and one from the right), and enters the census-designated place of Hummels Wharf. In Hummels Wharf, the stream turns south-southeast for more than a mile before crossing US Route 11/US Route 15 and turning northeast. It flows parallel to the Susquehanna River for several tenths of a mile before reaching its confluence with the Susquehanna River.