water is the origin of life. 3/4 of the earth's surface is covered by water and all living things must have water to survive. life without water can not be considered. despite this, of all living things only humans exploit, waste and pollute this vital natural resource. raising awareness of the people on this issue is of great importance. at this point, environmental education is a key con...

The management of surface and groundwater can be regarded as presenting resource dilemmas. These are situations where multiple users share a common resource pool, and make contested claims about their rights to access the resource, and the best use and distribution of the resource among competing needs. Overshadowed by uncertainties caused by limited data and lack of scientific knowledge, resou...

The world’s fresh water resources are unequally distributed both in time and in space. Until recently water resource management focused on reallocating water to when and where it was required, a supply-side or fragmented approach. Nowadays there are signs that water resource availability is dwindling – due to both population growth and increased per capita water use – and ecosystems are being d...

background: there are many genera of free-living amoeba in the environment, but members of only four genera ( naegleria , acanthamoeba , balamuthia and sappinia ) have an association with human infection. water, soil and air are main sources of infective types of these pathogenic organisms for human. methods: totally, 30 samples were collected from the surface water sources of shiraz city, the ...

information on water quality and pollution sources is important for the implementation of sustainable water resource management strategies. in this research, to evaluate spatial variation and the interpretation of large complex water quality data taken at seven different sites along the gorganrood river were subjected to multivariate statistical analysis. the factor analysis generated two signi...

Rising demand for food, fiber, and biofuels drives expanding irrigation withdrawals from surface water and groundwater. Irrigation efficiency and water savings have become watchwords in response to climate-induced hydrological variability, increasing freshwater demand for other uses including ecosystem water needs, and low economic productivity of irrigation compared to most other uses. We iden...

sahand dam with 135 mm3 storage located in southwest of hashtroud city is one of the important dams of east azarbijan. water storage of this dam supply drinking, industrial water demand of hashtroud city. furthermore, it used for irrigation of 11 hectares of the sector land. according to importance of this water resource, quality of dam reservoir water and related surface water and ground water...