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Paper Information

Journal:   JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES)   SPRING 2017 , Volume 70 , Number 1; Page(s) 87 To 100.
 
Paper: 

SIMULATION OF DAILY STREAM FLOWS IN SEMI-ARID MOUNTAINOUS WATERSHEDS USING FORTRAN HYDROLOGICAL SIMULATION PROGRAM (HSPF)

 
 
Author(s):  DASTORANI JAFAR*, MAHDAVI MOHAMMAD, SALAJEGHEH ALI, FAKHERIFARD AHMAD
 
* FACULTY OF NATURAL RESOURCES, SEMNAN UNIVERSITY, I.R. IRAN
 
Abstract: 

Hydrological Simulation FORTRAN Program (HSPF) has long been used in modeling watersheds and many studies have been carried out around the world in this regard. Hablerood watershed is located in Semnan province with an area of 3200 km2 which suppies the required water, especially for farming, in Garmsar plain. Previous studies on daily step and related to hydrology and water resources in this watershed were limited to computation of statistics summaries of daily stream flows. Therefore, simulation of daily stream flows is very important. In this research, the parameters of HSPF model were estimated and the results of model in current conditions with minimum data availability are discussed. In general, it was found out that since the model performance using Win HSPF has high errors in metric system, English system must be used in stead. Also, due to the model’s need to hourly time series data, more detailed information about Hydrological components, and other terrestrial data as well as due to low accuracy of these data and model’s objection in some cases such as using the mean of infiltration parameter for a given land use segment and the lack of certain criteria in watershed delineation, high errors occurred in daily stream flow simulation with the Nash-Sutcliffe model efficiency coefficient of 0.77 and 0.18 as well as 0.468 and 0.49 for R2 in calibration and validation period, respectively. Also, simulated flows in late spring are higher than observed value, while in late summer through fall are lower than observed value. Finally, at the end of the paper we discuss the solution to obtain better results.

 
Keyword(s): DAILY STREAM FLOW SIMULATION, HYDROLOGICAL SIMULATION FORTRAN PROGRAM, (HSPF), HABLEROOD WATERSHED
 
References: 
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