Large dams and reservoirs alter not only the natural flow regimes of streams rivers but also their flooding cycles flood magnitudes. Although effect has been reported for some vulnerable locations, understanding inner-basin variation with respect to effects remains limited. In this study, we analyse Three Gorges Dam (TGD) built on Changjiang mainstream (Yangtze River) investigate dam variations...

Dams are important reservoirs in semiarid regions providing the needs of population and agricultural activities an area which intermittent rivers predominate. These subject to erosion processes that can cause sedimentation affect quality water them. The method dating sediments using 210Pb is well known used establish a precise chronology places where abrupt changes conditions do not occur. work...

Reservoirs situated along a river continuum are ecosystems where rates of transfer of suspended matter and associated micropollutants are reduced due to sedimentation, accumulation, and biological and physical transformation processes. Among the micropollutants, PCDDs and PCDFs are substances that are highly toxic and carcinogenic for humans and animals. They are emitted and dispersed in the en...

Farmers in the Indus Basin, Pakistan have generally switched to groundwater for additional water supplies due to the irregular supply of irrigation water; currently over 50% of the agricultural land in the basin is at least partially irrigated by tubewells. These wells pump fresh groundwater, which essentially is the result of massive leakage from irrigation canals into the originally saltwater...

Green algae play an important role in ecosystems as primary producers, but they can cause algal blooms, which are socio-environmental burdens responding to them requires water resources from dam reservoirs. This study proposes alternative for reducing blooms through operation without using additional resources. A novel oscillation flow concept was suggested: oscillating discharge of irregular f...

the reliable operation of spillways, in emergency as well as normal conditions, is one of the vital components in dam safety. free or uncontrolled overflow spillways are the most reliable choice however. they usually impose higher construction cost and /or results in wasting a considerable amount of water or live capacity of the reservoirs. employing fuse gates might be a way of reconciling dam...

The Xiaolangdi Dam is a key project for the control and development of Yellow River. It bears functions flood control, controlling water sediment in lower reaches, ice prevention, industrial agricultural supply, power generation, so on. Its safety related to people’s life property local economic social development. great significance carry out comprehensive regular deformation monitoring dams s...