The FAO estimates the irrigation potential of all countries in the Niger river basin at 2. 8 million hectares.

Water flow relevance is based on its potential to be used for irrigation and as a source of energy.

If potential evapotranspiration is greater than actual precipitation, then soil will dry out, unless irrigation is used.

The difference between potential evapotranspiration and precipitation is used in irrigation scheduling.

The crew worked to manage the CO < sub > 2 </ sub > by occasionally turning on a CO < sub > 2 </ sub > scrubber, activating and de-activating the desert and savannah through control of irrigation water, cutting and storing biomass to sequester carbon, and utilizing all potential planting areas with fast-growing species to increase system photosynthesis.

This study was included in the Rivers and Harbors Act of, which provided for studies on the navigation, power, flood control and irrigation potential of rivers.

President Franklin D. Roosevelt, who took office in March, 1933, supported the dam because of its irrigation potential and the power it would provide, but he was uneasy with its price tag.

Overhead irrigation, using center-pivot or lateral-moving sprinklers, has the potential for a much more equal and controlled distribution pattern.

On the other hand, drip irrigation avoids the high capillary potential of traditional surface-applied irrigation, which can draw salt deposits up from deposits below.

The project, as built now, has a high earth gravel shell dam with a gross irrigation potential of of land and power generation of 600 MW ( 4 units of 150 MW capacity each ).

The reservoir, with a maximum storage capacity of, has the potential to be the second largest reservoir completely within the borders of the state of Arizona, but because the Gila River and its main tributary, the Salt River, are generally almost always completely diverted for irrigation and municipal water use for Phoenix, the lake is often dry.

The Europeans saw great potential to exploit the resources of the weakening empire, irrigation could transform agriculture, there were chrome, antimony lead and zinc mines and some coal.

The World Bank has approved 224. 1 million for the Cooum restoration project towards development of its irrigation potential.

Several rivers located in Magpet are being tapped for irrigation development and potential for hydro power plants.

However, potential future threats might include habitat destruction from changes in irrigation schemes or other factors resulting in water table alteration, well-intentioned but non-scientifically based conservation efforts ,.

During the Green Revolution of the 1960s and 1970s, for example, irrigation was a key factor in unlocking Asia's agricultural potential and reducing poverty.

The irrigation potential of this project is 11, 510 km², spread in the district of West Champaran, East Champaran, Muzaffarpur, Samastipur, Saran, Siwan & Gopalganj.

By the time of Mesalim, whichever dynasty controlled the city of Kish was recognised as šar kiššati (= king of Kish ), and was considered preeminent in Sumer, possibly because this was where the two rivers approached, and whoever controlled Kish ultimately controlled the irrigation systems of the other cities downstream.

Southern Iraq during Akkadian period seems to have been approaching its modern rainfall level of less than per year, with the result that agriculture was totally dependent upon irrigation.

Later, navigation was stopped in 1904 and the canal has since then, been exclusively used for irrigation purposes only.

Beginning in the 1960s, water inflow to the Dead Sea from the Jordan River was reduced as a result of large-scale irrigation and generally low rainfall.

Technology flourished ; there was investment in economic infrastructure, such as irrigation systems and canals ; and the importance of reading the Qur ' an produced a comparatively high level of literacy in the general populace.

Since there was little rainfall irrigation systems were necessary.

Some attention was given to problems of flood control and drainage before the revolution of July 14, 1958, but development plans in the 1960s and 1970s were increasingly devoted to these matters, as well as to irrigation projects on the upper reaches of the Tigris and Euphrates and the tributaries of the Tigris in the northeast.

Agricultural production expanded until the early 1960s, as additional land was brought under cultivation and some irrigation projects began to have an effect.

He was found seven days later on December 2, 2001, when Northern Alliance forces diverted an irrigation stream into the middle of the camp in an attempt to flush the remaining prisoners out of their underground shelters, drowning many in the process.

Southern California was also chosen because of its beautiful year-round weather and varied countryside ; its topography, semi-arid climate and widespread irrigation gave its landscapes the ability to offer motion picture shooting scenes set in deserts, jungles and great mountains.

With irrigation, the food supply in Mesopotamia was compabale to the Canadian prairies.

This is why the development of irrigation was very important for settlers of Mesopotamia.

It was frequently speculated that ancient Martian civilizations had constructed irrigation works that spanned the planet in an attempt at saving their dying world.

It was probably an application of spiral movement in space ( spirals were a special study of Archimedes ) to a hollow segmented water-wheel used for irrigation by Egyptians for centuries.

Sri Lanka's irrigation system was extensively expanded during the reign of Parākramabāhu the Great (

At the same time, Senegal and Mauritania have cooperated successfully with Mali under the Senegal River Development Office ( Organisation pour la Mise en Valeur du Fleuve Sénégal — OMVS ), which was formed in 1972 as a flood control, irrigation, and agricultural development project.

In the 1960s and 1970s, the wet cultivation area was expanding rapidly, as the government implemented large-scale irrigation projects to restore the dry zone to agricultural productivity.

A well-managed irrigation system allowed the area to support a higher population density than was possible during later periods.

In 1998 there was an estimated 16. 9 million hectares ( 41. 8 million acres ) of arable land and approximately 1. 9 million hectares ( 4. 7 million acres ) set aside for irrigation, primarily in the north of the country along the banks of the Nile and other rivers.

In the past, it was suggested that the centralized state was developed to administer large public works systems ( such as irrigation systems ) and to regulate complex economies.

The dam created Lake Medina, a reservoir to supply water for irrigation of an estimated.

The project provides flood control, electric power, irrigation, and navigation benefits, estimated by the Corps of Engineers at $ 150, 000, 000 per year.

It is estimated that of water is needed to support the potable and agricultural irrigation needs of Mexico City's population.

The Eastern Gandak Canal Project was taken up in 1960 and Main Canal system was completed in 1975 for flow irrigation in Nepal for the gross commanded area estimated to be.