Fluvial Erosion

Valley or stream erosion occurs with continued water flow along a linear feature. The erosion is both downward, deepening the valley, and headward, extending the valley into the hillside, creating head cuts and steep banks.

The Colca Canyon is a canyon of the Colca River in southern Peru.

is a deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over geologic time scales

The river waters flowing through the gorge eroded a canyon several hundred meters below world ocean level at Aswan, and 2,400 meters (7,900 ft) below at Cairo.

Below the confluence with the Green River, its largest tributary, in Canyonlands National Park, the Colorado enters Cataract Canyon, named for its dangerous rapids, and then Glen Canyon, known for its arches and erosion-sculpted Navajo sandstone formations.

These rivers eroded the sedimentary strata above the Fennoscandian Shield.

From the border of Lesotho to below the Vanderkloof Dam, the river bed is deeply incised.

They are the margins of the great sandstone plateaus, from 300 to 600 metres (980 to 1,970 ft) elevation above sea-level, through which the rivers have eroded their deep beds.

The Herbert River, which previously flowed west, began to cut through the terrain en route to its outflow in the Coral Sea.

The region is typified by steep-sided valleys carved by swift-flowing rivers, the most prominent of which is the Meuse.

As tectonic activity has forced the mountains higher, the river has cut through the uplift.

The canyon was formed by a deep incision of the Waimea River arising from the extreme rainfall on the island's central peak, Mount Waiʻaleʻale, among the wettest places on earth.

The canyons were formed by six rivers that drain the western side of the Sierra Tarahumara (a part of the Sierra Madre Occidental).

It was formed by the Verdon River, which is named for its turquoise-green colour, one of the location's distinguishing characteristics.