River Gipping
The River Gipping is the source river for the River Orwell in the county of Suffolk in East Anglia, England, which is named from the village of Gipping, and which gave its name to the former Gipping Rural District. The name is unrelated to the name of Ipswich. It rises near Mendlesham Green and flows in a south-westerly direction to reach Stowmarket. From there it flows towards the south or south east, passing through Needham Market and a number of villages to reach Ipswich, where it becomes the Orwell. The river has supplied power to a number of watermills, several of which are still standing. None are operational, although the mill at Baylham retains most of its machinery, and is the only complete mill on the river.
Otselic River
Originally the Otselic Creek began at Hatch Lake in the Town of Eaton. 
When Hatch Lake was dammed in the 1830s to supply the Chenango Canal, all the lake water was diverted to the Chenango Valley to the east. The Otselic River now rises in Torpy Pond in southwestern Madison County, northeast of Georgetown, and meanders southwest through rich river bottom farmland. The Otselic Valley runs through Georgetown, Otselic, Pitcher, Cincinnatus, Willet, Lisle, and Whitney Point, where it is impounded to form Whitney Point Reservoir. Below the Whitney Point Dam, the Otselic River joins the Tioughnioga River from the northeast.