rift and fault systems. This valley extends northward for 5,950 km through the eastern part of Africa, through the Red Sea, and into Western Asia. Several...

northern perimeter of the Animas Valley, south of the west-flowing Gila River and the towns of Virden and Red Rock. The valley forms a topographically closed...

Pottsville Escarpment. The gorge lies within the Daniel Boone National Forest and was subsequently designated the Red River Gorge Geological Area, an area...

Manitoba. It was the most severe flood of the river since 1826. The flood reached throughout the Red River Valley, affecting the cities of Fargo and Winnipeg...

The Red Deer River is a river in Alberta and a small portion of Saskatchewan, Canada. It is a major tributary of the South Saskatchewan River and is part...

Mackenzie River (French: Fleuve (de) Mackenzie; Slavey: Deh-Cho [tèh tʃʰò], literally big river; Inuvialuktun: Kuukpak [kuːkpɑk], literally great river) is...

Susquehanna Valley is a region of low-lying land that borders the Susquehanna River in the U.S. states of New York, Pennsylvania, and Maryland. The valley consists...

mainly the valley of the Spiti River, and the valleys of several rivers that feed into the Spiti River. Some of the prominent side-valleys in Spiti are...

major rivers. It produces 70% of Long Island Sound's fresh water, discharging at 18,400 cubic feet (520 m3) per second. The Connecticut River Valley is home...

up river, so ships could sail up river using sails and down river using the flow of the river. While most Egyptians still live in the Nile valley, the...