1 Ground water is an almost ubiquitous source of generally high-quality fresh water. These characteristics promote its widespread development, which can be scaled and localized to demand, obviating the need for substantial infrastructure1. Globally, ground water is the source of one third of all freshwater withdrawals, supplying an estimated 36%, 42% and 27% of the water used for domestic, agri...

The age of ground water in any given sample is a distributed quantity representing distributed provenance (in space and time) of the water. Conventional analysis of tracers such as unstable isotopes or anthropogenic chemical species gives discrete or binary measures of the presence of water of a given age. Modeled ground water age distributions provide a continuous measure of contributions from...

abstract this research investigates the effect of drought on ground water table of neishabour plain. the precipitation data of nishabour synoptic station during 1990-2001, the bar climatology station during 1964-2001 and the data of hydrometric stations of kherv and bar in 1996-2001 have been used as the base of analysis. the method of herbest et all has been used to analyze the drought. using ...

in iraq, waste generation was increased after 2003 war events due to intensepopulation developmentand economic growth. the limitation of designable system for municipal solidwaste (msw) management led toserious problems regarding environment and human health. sanitary landfill in the south of kirkuk is the first kindof effective system for municipal solid waste management in iraq. in the first ...

study of the ground water quality in hodeidah is an essential ingredient for a healthypopulation. in this research, study of drinking water samples for eight water sources wells in thequti field has been achieved. the purpose was to a certain the quality of water from thesesources, the physical properties such as ph, electrical conductivity (ec) and total dissolvedsolids (tds), showed the varia...

conjunctive use of ground and surface water can increase reliability of the water supply by providing independent sources. in this study, corrected utility-efficient pro-gramming that allows for more than one seasonal irrigation depth for each crop was used to determine the amount of utility maximizing investment in the well capacity for conjunctive use. results showed that optimum investment a...