stream channel erosion
61Drop structure — A drop structure, also known as a grade control, sill, or weir, is a manmade structure, typically small and built on minor streams, or as part of a dam s spillway, to pass water to a lower elevation while controlling the energy and velocity of… …
62Levee — For other uses, see Levee (disambiguation). The side of a levee in Sacramento, California A levee, levée, dike (or dyke), embankment, floodbank or stopbank is an elongated naturally occurring ridge or artificially constructed fill or wall, which… …
63Arroyo Seco (Los Angeles County) — For Sonoma County, California creek, see Arroyo Seco Creek. The Arroyo Seco: Devil s Face profile next to Devil s Gate Dam, gunited many decades ago for erosion control The Arroyo Seco, meaning dry stream in Spanish, is a 24.9 mile long… …
64Knickpoint — The Horseshoe Falls, one of the three Niagara Falls. The falls are a knickpoint, formed by slower erosion above the falls than below. A knickpoint is a term in geomorphology to describe a location in a river or channel where there is a sharp… …
65Cut bank — For other uses, see Cut Bank (disambiguation). Cut bank erosion and point bar deposition as seen on the Powder River in Montana. A cut bank, also known as a river cliff, is an erosional feature of streams. Cut banks are found in abundance along… …
66china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material …
67China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast …
68United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
69Groyne — Groynes in Sitges A groyne (groin in the United States) is a rigid hydraulic structure built from an ocean shore (in coastal engineering) or from a bank (in rivers) that interrupts water flow and limits the movement of sediment. In the ocean,… …
70Valley — In geology, a valley (also called a vale, dale, glen or strath and near or in Appalachia, a draw) is a depression with predominant extent in one direction. A very deep river valley may be called a canyon or gorge. The terms U shaped and V shaped… …
