In the semiarid central region of Argentina the probability that rainfall meets crop requirements during growing season is less than 10%, therefore fallowing has been the most important practice to assure water availability during the growing season.
The present study area mainly depends on the rainfall to fulfill the requirements of local community for domestic as well as agricultural purposes, the scarcity of which could lead to acute water crisis resulting in severe drought conditions.
Actually, irrigation water is largely determined by rainfall and crop water requirement in the irrigation district.
In this case, abundant antecedent rainfall is not a requirement because debris flows can be triggered by riverbed material saturated with surface water (Berti et al. 1999; Coe et al. 2008), not necessarily hillslope material saturated with underground soil water.
This zone is demarcated by climatic requirements of temperature and rainfall.
Ahmed et al. (2017) examine the interconnections between the long-term rainfall variation and the rangeland Water Requirement and Satisfaction Index (WRS I in Ethiopia.
With the wavelet analysis method, the varying fluctuation characteristics of rainfall, irrigation water, and crop water requirement with multi-temporal scales are exhibited.
Therefore, we studied the interconnections between the long-term rainfall variation and the rangeland Water Requirement and Satisfaction Index (WRS I in Mieso, Jigjiga, and Shinile districts under pastoral conditions of Ethiopia.
"When you drop more water than usual out of those reservoirs now, you have to hope you'll have sufficient rainfall and snowfall to meet your flow requirements next spring and summer," said John Harrison, a spokesman for the Northwest Power Planning Council, which represents the governors of Washington, Oregon, Idaho and Montana and seeks to balance energy planning with environmental concerns.
