Journal of Range and Watershed Managment

Runoff Estimation of Urban Catchment Using URBS-UH Model (Case Study Baharestan City)

Document Type : Research Paper

Authors

zohreh khorsandi 1
Mohammad Mahdavi 2
Ali Salajeghe 3
Saeid Eslamian 4

1 Ph.D. Student of Watershed Management, Science and Research Branch, Islamic Azad University, Tehran, I.R.IRAN

2 Professor, Faculty of Natural Resources, University of Tehran, I.R.IRAN

3 ; Professor, Faculty of Natural Resources, University of Tehran, I.R.IRAN

4 Professor, Faculty of Agriculture, Isfahan University of Technology, I.R.IRAN

https://doi.org/10.22059/jrwm.2016.61732
Abstract
Quantification of urban hydrologic response of catchments to rain fall is one of the most important
issues in urban hydrology. Despite its importance, there is scant information by means of which
required data can be obtained for quantifying hydrologic response. In this study, urban database was
developed for a part of Baharestan City in Isfahan Province and using the information, the urban
unit hydrograph was determined through URBS-UH model for two catchments of Baharestan. Peak
of hydrograph of the first and second catchment was estimated 0.0727m3/s and 0.096, respectively.
Flood hydrograph of some rain occurred previously in Baharestan was determined through the unit
hydrograph. Peak discharge of flood was also measured and the efficiency of the developed model
was examined based on the peak information. Nash–Sutcliffe coefficient of the first and the second
catchment were estimated 0.89 and 0.79, respectively. The developed model showed good to very
good performance in the pilot area.

Keywords

Urban hydrology
Unit Hydrograph
URBS-UH model
Baharestan
Journal of Range and Watershed Managment
Volume 69, Issue 1
Spring 2016
Pages 39-50

  • Receive Date 25 April 2016
  • Revise Date 03 July 2016
  • Accept Date 29 May 2017
  • Publish Date 21 May 2016

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