Yssel
or IJSSEL, the name of several rivers in the Netherlands. The NIEUW YSSEL, one of the principal arms of the Rhine, leaves that river below Arnheim, Ar flows N. E. for 16 miles to Doesburg, where it receives the OUDE YSSEL from Westphalia, then N. E., N., and N. W., through Gelderland and Overyssel, past Zutphen and Deventer, receiving the Borkel and Schip-Beek, emptying at Kampen by many arms into the Zuyder Zee, and forming a constantly widening delta. It is one of the five main arms of the Rhine, is 320 feet broad at Zutphen, 764 at Kampen, and 90 miles in length. The NEDER YSSEL, an arm of the Leck, which leaves that stream at Vianen, flows W. through Utrecht at Oudewater, enters Southern Holland and flows S. W. past Gouda to join the Maas, forming at its mouth the island of Ysselmonde.