The identification of runoff contributing areas would provide the ideal focal points for water quality monitoring and Best Management Practice (BMP) implementation. The objective of this study was to use a field-scale approach to delineate critical runoff source areas and to determine the runoff mechanisms in a pasture hillslope of the Ozark Highlands in the USA. Three adjacent hillslope plots ...

Starting from the existing analysis of runoff from the Hotan River, the varying cause of runoff in the Hotan River is analyzed using the annual runoff accumulated curves and the orderly cluster method, pointing out that the runoff from the Hotan River coming from the mountains falls into the natural runoff with the fluctuations because of being subject to climate changes. It is worth noticing t...

Surface depressions are important topographic characteristics for surface runoff initiation, and the spatial distribution of may further affect timing quantity reaching channels outlets. However, many hydrologic models simulate fill-spill processes depression-dominated areas in a lumped manner release outflows from to or outlets directly. As result, progressive formation contributing area (CA) ...

The storm water management model (SWMM) has been used extensively to plan, implement, control, and evaluate low impact development facilities other drainage systems solve storm-related problems in sponge cities. However, the calibration of SWMM involves a variety sensitive parameters may bring significant uncertainties. Here we incorporated distributed time variant gain (DTVGM), with simple str...

It has become necessary to estimate the quantities of runoff by knowing amount rainfall calculate required water storage in reservoirs and determine likelihood flooding. The present study deals with development a hydrological model named Hydrologic Engineering Center (HEC-HMS), which uses Digital Elevation Models (DEM). This was used means Geospatial Modeling Extension (HEC-GeoHMS) Geographical...

The northwest arid region (NAR) of China, located in a cold region, has been experiencing extreme weather and runoff events for years. Summer (from June to August) is the main season for forming runoff in this region. Summer runoff is contributed by glacial runoff in addition to precipitation in glacierized basins. The upper basins of Hei River, Shule River, Kaidu River, and Manas River with di...

Tracer and indicator microbe runoff experiments were conducted to investigate the influence of solution chemistry on the transport, retention, and release of Escherichia coli D21g. Experiments were conducted in a chamber (2.25 m long, 0.15 m wide, and 0.16 m high) packed with ultrapure quartz sand (to a depth of 0.10 m) that was placed on a metal frame at slopes of 5.6%, 8.6%, or 11.8%. Runoff ...

The implementation of measures such as check dams and terraces in the Loess Plateau China has had a groundbreaking impact on water sediment conditions. question how to accurately simulate runoff–sediment process under complex underlying surface conditions become key clarifying cycle law. This study focused Chenggou River basin, small watershed located Plateau, examine effect characteristics run...