Drainage system (geomorphology)

The number, size, and shape of the drainage basins varies and the larger and more detailed the topographic map, the more information is available.

In antecedent drainage, a river's vertical incision ability matches that of land uplift due to tectonic forces.

[3] A parallel drainage system occurs on elongate landforms like outcropping resistant rock bands), typically following natural faults or erosion (such as prevailing wind scars).

They form where hard and soft formations exist on both banks of the main river, and are reflective of height, accentuated by erosion.

Volcanos usually have archetypal features on which this commonly develops are modest or hard domes pattern develops when streams flow in many general directions (meaning quite long-term) In India, the Amarkantak range and Ramgarh crater are most archetypal; and Dogu'a Tembien in Ethiopia.

[4] When the streams converge at a point, which is generally a depression or a basin they form centripetal or inland drainage pattern.

These can form in areas with extensive limestone deposits, where surface streams can disappear into the groundwater via caves and subterranean drainage routes.

The melting of the glaciers left land with many irregularities of elevation and a great deal of water to collect in the low points, resulting in the region's many lakes.

It is best displayed by streams draining a maturely dissected structural dome or basin where erosion has exposed rimming sedimentary strata of greatly varying degrees of hardness, as in the Red Valley, which nearly encircles the domal structure of the Black Hills of South Dakota.

The sedimentary basins forming the modern Rio Grande Valley were not integrated into a single river system draining into the Gulf of Mexico until relatively recent geologic time.

Instead, the basins formed by the opening of the Rio Grande rift were initially bolsons, with no external drainage and a central playa.