Sensitivity analysis of SWMM model parameters for urban runoff estimation in semi-arid area
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 10, Issue 5
Abstract
Modelling of urban runoff is important for flood prevention and storm water management. For urban runoff modelling, estimate and collection of input parameters (measured and inferred) is very important, but accuracy of the results depend to the precision of the input data and calibration of the model that need to the highly detailed input data. Sensitivity analysis should indicate the parameters with greater effect on the results. In this study, sensitivity analysis of SWMM model parameters was done for urban runoff estimation in a semi-arid area located in the Northwest of Iran (Zanjan city watershed). According to results, depth of depression storage, percent of impervious area and Manning’s roughness coefficient of impervious area were the most sensitive parameters of SWMM that affect peak and volume of the runoff. The properties related to the previous surfaces such as curve number, Manning’s roughness coefficient and depth of depression storage have not a significantly effect on model outputs. The results of the goodness-of-fit test show the accuracy of the model outputs, consequently, SWMM souled propose for simulating the urban drainage systems in semi-arid area. NOF and NSC criteria indicate that the prediction errors are also well balanced. We can conclude that validated model can use for rainfall-runoff simulation in the area located in the semi-arid area.
Authors and Affiliations
Ali Moafi Rabori, Reza Ghazavi, Mohsen Ahadnejad Reveshty
Keywords
Related Articles
- EP ID EP39142
- DOI -
- Views 231
- Downloads 0
Investigation of habitat characteristic of Phlomis cancellata Bunge. in Mazandaran province, in Iran
Phlomis cancellata Bunge. is a native plant belongs to Labiatae family which can used morein modern medicine and different industries for its essential oil particulars, in addition to Iranian folk medicine. The research...
Investigation ground based logging damages on natural regeneration in a selection cutting stand in the Caspian forests of Iran
In this study ground based logging damages on natural regeneration following selection cutting were investigated in Nav Asalem forest in the Caspian forests of Iran. Systematic plot sampling method before and after fini...
Study on chemical compounds of precipitation and determination of nitrogen and sulfur input from precipitation in guilan province, Iran
Study on precipitation in order to determinate the compounds in the rain and their effects on quality of surface and ground water and also, soil resource is very important. In this research, sampling of precipitation wa...
Organic cultivation of medicinal plants: a review
Nowadays, organic products are being famous for all people around the world. Due to the great global market demand, production of organic foods has rapidly increased in the past decades. On this basis organic agricultur...
Estimate non-linear regression models for use in growth analysis of rice (Oryza sativa L.)
Growth indices are useful for interpreting plant reaction to the environmental factors. Growth analysis is a valuable method in the quantitative analysis of crop growth, development and crop production. There are many...