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1Drainage in New Orleans — Drainage in New Orleans, Louisiana has been a major concern since the founding of the city in the early 18th century, remaining an important factor in the history of New Orleans through today. Elevation map of New Orleans. Hotter (pink) shades… …
2canals and inland waterways — ▪ waterway Introduction natural or artificial waterways used for navigation, crop irrigation, water supply, or drainage. Despite modern technological advances in air and ground transportation, inland waterways continue to fill a vital …
3irrigation and drainage — ▪ agriculture Introduction artificial application of water to land and artificial removal of excess water from land, respectively. Some land requires irrigation or drainage before it is possible to use it for any agricultural production; other… …
4Texas Irrigation Canals — There are many irrigation canals in Texas. The majority of large canal networks are in the Rio Grande Valley and the Gulf Coast, though smaller systems are located throughout the state. Canals provide water to dry climates to irrigate crops. Rio… …
5United 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… …
6tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
7Draining and development of the Everglades — Satellite image of the northern Everglades with developed areas in 2001, including the Everglades Agricultural Area (in red), Water Conservation Areas 1, 2, and 3, a …
8eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… …
9Hydropolitics in the Nile Basin — Essay like|article|date=December 2007The Nile River is subject to political interactions. It is the world s longest river flowing 6,700 kilometers through ten countries in northeastern Africa – Rwanda, Burundi, Democratic Republic of the Congo… …
10Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
