نتایج جستجو برای: runoff coefficient
تعداد نتایج: 183142 فیلتر نتایج به سال:
The accurate evaluation method of LID toward the attenuation urban flood is still a hot issue. This paper focuses on coupled 1D and 2D hydrodynamic model, investigating model parameters set in collapsible loess area, changes surface runoff, waterlogged drainage network indicators under different rainfall patterns. results show that can effectively simulate effect facilities unaltered retrofitte...
soil erosion models are useful tools to predict runoff, sediment and soil erosion in watersheds. although, the swat model is used for evaluating runoff discharge and the long-term effects of management operation on water, sediment and agricultural chemical yields in the large watersheds, in this research, its efficiency was investigated in monthly runoff simulation for tuyserkan watershed (with...
This study evaluates the performance of the linear first-order Volterra model for simulating nonlinear rainfall-runoff process. For this end, fifteen storm events over the Navrood River basin were collected. 70% and 30% of the events were used to calibrate and test the suitability of the model. Finally, the performance of the model was compared with the artificial neural networks (multilayer pe...
The El Niño phenomenon is caused by the change in atmospheric pressures, which produce accumulation of hot surface waters on eastern flank Pacific Ocean; causing intense rainfall that runs over affecting urban drainage city due to lack a permeable pavement; porous concrete allows infiltration water runoff through its pores. present investigation evaluates range w/c relationships 0.30 and 0.32; ...
Aims: Geomorphological parameters are signature for the conversion of rainfall into runoff. The morphometric analysis using GIS gives platform deriving geomorphological parameter river basin. Due to intercourse between stream network and landscape, driving force For finding which is more significant contribution runoff, statistical better solution. morphological watershed derived then use landf...
Soil Conservation Service (SCS) and overland flow models have been used for runoff modeling over major land mass of India. Remote sensing derived daily rainfall data (Climate Prediction Centre), high temporal NDVI data (SPOT VGT), DEM (GTOPO30) and soil texture maps were used as input for the runoff modeling. SCS model setup was done in GIS (Arc GIS) environment. In general the reported and mod...
Dissolved inorganic P transport in runoff from agricultural soils is an environmental concern. Models are used to predict P transport but rarely simulate P in runoff from surface-applied manures. Using field-plot data, we tested a previously proposed model to predict manure P in runoff. We updated the model to include more data relating water to manure ratio to manure P released during water ex...
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