jazmoryan wetland is one of the most sensitive ecosystems in the south east of the country which is declining due to dam construction in upstream as well as deficiency of environmental water supply. the wetland seem to dry out due to its geographical location and construction of bampour diversion dam and jiroft reservoir dam on major rivers flowing to this wetland. one of the solutions proposed...

Abstract Ice dams are among the important risks affecting operational safety and water conveyance efficiency of diversion projects in northern China. However, no evaluation indicator system for ice dam risk assessment has been proposed. Therefore, this paper, based on formation mechanism dams, possibility calculation model were both proposed fuzzy fault tree analysis method. The constructed stu...

Stepped block protection has considerable potential as a low-cost method for the construction of chute spillways and the protection of embankments from erosion by overtopping flow. Stepped spillways are structurally stable, resistant to water loads and significantly increase the rate of energy dissipation on the spillway face thus eliminating or greatly reducing the need for a large energy diss...

Drought is a common disturbance in arid-land streams and rivers. The survival of aquatic species depends on access to refuge habitats where water quality remains high. Over the past century, modified flow regimes altered watershed instream characteristics have led extinction endangerment numerous fish endemic southwestern United States. We assessed potential drought refuges Middle Rio Grande (M...

The Rio Grande/Río Bravo del Norte (hereinafter referred to as the “Rio Grande”) is primary source of recharge Mesilla Basin/Conejos-Médanos aquifer system in Valley New Mexico and Texas. Basin U.S. part water supply several communities along United States–Mexico border near Valley. Identifying gaining losing reaches Grande therefore critical for managing quality quantity surface groundwater re...

Abstract In order to improve the heat dissipation performance of brake disc and reduce air drag coefficient vehicle, influence mechanism front wheel dam cooling guide structure is studied. Firstly, according flow field around wheel, six feasible optimization solutions are designed; then, CFD simulation method used simulate rate, transfer time; secondly, for time whole aerodynamic-acoustic wind ...