stream channel erosion
81Colorado River — This article is about the river that flows through the Grand Canyon. For other rivers named Colorado, see Colorado River (disambiguation). Coordinates: 31°39′N 114°38′W / 31.65°N 1 …
82Driftless Area — Relief map showing primarily the Minnesota part of the Driftless Area. The wide diagonal river is the Upper Mississippi River. In this area, it forms the boundary between Minnesota and Wisconsin. The rivers entering the Mississippi from the west… …
83UNITED STATES OF AMERICA — UNITED STATES OF AMERICA, country in N. America. This article is arranged according to the following outline: introduction Colonial Era, 1654–1776 Early National Period, 1776–1820 German Jewish Period, 1820–1880 East European Jewish Period,… …
84Hydrological transport model — An hydrological transport model is a mathematical model used to simulate river or stream flow and calculate water quality parameters. These models generally came into use in the 1960s and 1970s when demand for numerical forecasting of water… …
85Drainage basin — Example of a drainage basin. The dashed line is the main water divide of the hydrographic basin A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit… …
86Norwegian trench — Map of the North Sea with Norwegian trench The Norwegian trench or Norwegian channel (Norwegian: Norskerenna; Danish: Norskerenden) is an elongated depression in the sea floor (but not a true oceanic trench) off the southern coast of Norway. It… …
87Santa Rosa Creek — Geobox|River name = Santa Rosa Creek native name = other name = category = stream etymology = Spanish nickname = image caption = Middle reach of Santa Rosa Creek country = United States state = California region = Sonoma County district =… …
88Geomorphology — (from Greek: γη, ge , earth ; μορφή, morfé , form ; and λόγος, logos , knowledge ) is the study of landforms and the processes that shape them. Geomorphologists seek to understand why landscapes look the way they do: to understand landform… …
89Geology of the Grand Canyon area — The geology of the Grand Canyon area exposes one of the most complete sequences of rock anywhere, representing a period of nearly 2 billion years of the Earth s history in that part of North America. The major sedimentary rock layers exposed in… …
90Oso Creek — Coordinates: 33°31′10″N 117°40′19″W / 33.51944°N 117.67194°W / 33.51944; 117.67194 …
