ESTIMATION OF THE AMOUNT OF WATERSHED RUNOFF IN THE KASHKAN RIVER WITH GIS

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SOURINEJAD A.

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Journal: GEOGRAPHICAL RESEARCH QUARTERLY Year:2003 | Volume:34 | Issue:43 Page(s): 57-80

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Title

ESTIMATION OF THE AMOUNT OF WATERSHED RUNOFF IN THE KASHKAN RIVER WITH GIS

Author(s)

SOURINEJAD A. | Issue Writer Certificate

Keywords

PRECIPITATIONQ2

RAINFALLQ2

RUNOFF; ISOHYETALQ4

MODELINGQ2

SIMULATIONQ2

GIS.Q2

Abstract

Estimation of Runoff from PRECIPITATION is a base for most the different development and utilization projects of Water Resources. So due to environmental constraints, its measurements and computations always face a lot of problems. The study of most of the hydrologic models and methods indicates that due to the lack of enough and accurate statistical data on the effectiveness of temporal patterns and some other environmental problems. Sometimes, their coefficients show errors. Nowadays, through combining the empirical models and methods with GIS.techniques, We can determine their unknown coefficients in order to obtain correct and precise runoffs. In this research, Watershed of Kashkan River with the area of 9275.66 Km2 in the Southwest of IRAN located in Lorestan Province, is chosen as a case study. To approach the desired goals of the project, annual PRECIPITATION data, within the years 1964-1996 (32 years) were deducted. Then, in order to analyze the obtained data, Isohyetal Maps (Interpolation methods) were prepared using GIS.algorithms. The main goal has been to test a combination of empirical models with GIS.techniques to prepare lsohyetal maps (models) in order to measure the local RAINFALL and effective PRECIPITATION to be used in RAINFALL-Runoff SIMULATIONs. Results (using linear equations) show that correlation coefficients between the observed and computed data (Rainfall-Runoft) for the subbasin of this region are between 97.5 and 99.99 percents, In conclusion preparing Isohyetal models using GIS.is recommended as the most certain criteria

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APA: Copy

SOURINEJAD, A.. (2003). ESTIMATION OF THE AMOUNT OF WATERSHED RUNOFF IN THE KASHKAN RIVER WITH GIS. GEOGRAPHICAL RESEARCH QUARTERLY, 34(43), 57-80. SID. https://sid.ir/paper/5502/en

Vancouver: Copy

SOURINEJAD A.. ESTIMATION OF THE AMOUNT OF WATERSHED RUNOFF IN THE KASHKAN RIVER WITH GIS. GEOGRAPHICAL RESEARCH QUARTERLY[Internet]. 2003;34(43):57-80. Available from: https://sid.ir/paper/5502/en

IEEE: Copy

A. SOURINEJAD, “ESTIMATION OF THE AMOUNT OF WATERSHED RUNOFF IN THE KASHKAN RIVER WITH GIS,” GEOGRAPHICAL RESEARCH QUARTERLY, vol. 34, no. 43, pp. 57–80, 2003, [Online]. Available: https://sid.ir/paper/5502/en

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