Analysis of relative Flows in the Catchments without Gauging Station; Case Study: West of Urmia Lake Basin

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Analysis of relative Flows in the Catchments without Gauging Station; Case Study: West of Urmia Lake Basin

Original Article, A8

Azhdan, Y., Majedi-Asl, M., Daneshfaraz, R.

Journal. Civil Eng. Urban. 1(1): 53-56. 2011.

ABSTRACT: An important factor for designing soil and water projects is the estimation of annual runoff volume at project location, with no precise runoff data. One common method for estimation of the runoff is through meteorological parameters and physical characteristics of the region. The present paper attempts to complete the statistics from partial stations via linear regression and the randomness of the data was tested by the RUNTEST test and its results were satisfactory. Modeling relative annual and monthly runoffs in Iran is an essential task for precise planning of water projects engineering in catchments without hydrologic statistics and data. One important factor to be considered in understanding the catchments' hydrologic behavior is investigation of output currents in different time periods of daily, monthly, and annual scales. Thus, this study attempts to use multivariate linear regression to provide a decent model for estimation of annual runoff for the catchments of the Nazloo-Cahi, Barandooz-Chai, Shahr-Chai and Roze-Chai Rivers in the west of Urmia Lake.

Keywords: Watershed, Annual Runoff, Rainfall, Physical Characteristics, Multivariate Regression, Urmia Lake

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