PROCEEDINGS OF HYDRAULIC ENGINEERING
Online ISSN : 1884-9172
Print ISSN : 0916-7374
ISSN-L : 0916-7374
SNOWMELT RUNOFF ANALYSIS IN THE MOUNTAINOUS BASIN OF IRAN WITH LACK OF SNOW OBSERVATIONS
Ali CHAVOSHIANHiroshi ISHIDAIRAKuniyoshi TAKEUCHI
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JOURNAL FREE ACCESS

2007 Volume 51 Pages 55-60

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Abstract
This study tests whether the lack of conventional ground-based snow observation for Snow Water Equivalent (SWE) can be overcome by using other Hydro-meteorological data. To this end, two different methods are described. The first one is introducing a methodology using a Distributed Hydrological Model (DHM) to estimate SWE, when the available data are just precipitation and river discharge. For the second one, a distributed version of a Temperature-index snow model is developed and applied, when the ground-based data is limited to precipitation and temperature. Two methods are applied in the upstream of Karaj basin (850 km2), which is the most important water resources of Tehran, the capital of Iran. The estimated SWE is used for snow melt runoff forecast. It is found that forecast runoff correlates well with observed natural discharge. This high correlations suggest that a reliable SWE estimation and snowmelt runoff forecasting can be constructed using the methods in the absence of snow observation.
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© by Japan Society of Civil Engineers
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