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.
Chixoy River
The Chixoy River or Río Negro is a river in Guatemala. The river is called Río Negro from its sources in the highlands of Huehuetenango and El Quiché until it reaches the Chixoy hydroelectric dam (located at ), where the Río Salamá and Rio Carchela converge with the Río Negro. After the Chixoy dam, the river is called Río Chixoy and flows northwards, marking the departmental limits between Alta Verapaz and El Quiché, until it reaches the border with Mexico. From there on it continues along the border for another as the Salinas river until it finally converges with the Río la Pasión (at ) to form the Usumacinta river which flows into the Gulf of Mexico.