RAINFALL-RUNOFF SIMULATION USING MATHEMATICAL MODEL BASED ON GEOGRAPHICAL INFORMATION SYSTEM FOR AMAMEH WATERSHED

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MOHAMMAD SALEHI P.; RAEINI SARJAZ M.; ZIATABAR AHMADI M.KH.

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Paper Information

Journal: Journal of Agricultural Sciences and Natural Resources Year:2008 | Volume:15 | Issue:1 (SPECIAL ISSUE ON NATURAL RESOURCES) Page(s): 162-171

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Title

RAINFALL-RUNOFF SIMULATION USING MATHEMATICAL MODEL BASED ON GEOGRAPHICAL INFORMATION SYSTEM FOR AMAMEH WATERSHED

Author(s)

MOHAMMAD SALEHI P. | RAEINI SARJAZ M. | ZIATABAR AHMADI M.KH. | Issue Writer Certificate

Keywords

DIFFUSION WAVEQ3

GISQ3

ADEQUATE ALGORITHMQ3

TOPOGRAPHY INDICESQ3

TIME-AREA METHODQ3

Abstract

Study of uncommon flood occurrence phenomenon and its devastating losses could have important role on water resource managements. Simulation of rainfall-runoff originating from rainfall and snow thawing could be used in estimation of flood intensity and volume. This is not doable without a knowledge of hydrological and runoff processes. Therefore, employing of indirect methods for estimating rainfall- runoff processes has gained many attentions. The aim of this research is the evaluation of a pseudo-two dimensional mathematical model to simulate the accuracy of hydrograph of watersheds. This model can produce geographical parameters of watersheds in GIS medium of each rainfall event. In this way topographical and hydrogeomorphological characteristics are defined as topographic indices within raster framework. Using pseudo-two dimensional algorithm of ADEQUATE the path of flow of each cell of DEM of watershed to outlet is calculated. The amount of distributed flow of each cell to neighboring cells, and finally the total volume of water allocated to each cell is also determined. The allocated water volume of cell under study reaches the outlet through known path, as diffusive wave. The model calculates the time of equilibrium and with this process, based on TIME-AREA METHOD, a time map is prepared for all map cells of the watershed. Then isochrones are drawn and the area of flood hydrograph is simulated using the famous TIME-AREA METHOD. The model output was compared with four recorded flood hydrographs of Amameh watershed. The results of simulation of the four rainfall-runoff events showed that the model has a high capability in flood discharge rate estimation. The high and significant correlations (r=0.98 to 0.99; p<0.001) between simulated and measured data were observed. No significant difference was found between measured and simulated data. In conclusion, this model could precisely predict rainfall-runoff events.

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APA: Copy

MOHAMMAD SALEHI, P., RAEINI SARJAZ, M., & ZIATABAR AHMADI, M.KH.. (2008). RAINFALL-RUNOFF SIMULATION USING MATHEMATICAL MODEL BASED ON GEOGRAPHICAL INFORMATION SYSTEM FOR AMAMEH WATERSHED. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 15(1 (SPECIAL ISSUE ON NATURAL RESOURCES)), 162-171. SID. https://sid.ir/paper/9303/en

Vancouver: Copy

MOHAMMAD SALEHI P., RAEINI SARJAZ M., ZIATABAR AHMADI M.KH.. RAINFALL-RUNOFF SIMULATION USING MATHEMATICAL MODEL BASED ON GEOGRAPHICAL INFORMATION SYSTEM FOR AMAMEH WATERSHED. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2008;15(1 (SPECIAL ISSUE ON NATURAL RESOURCES)):162-171. Available from: https://sid.ir/paper/9303/en

IEEE: Copy

P. MOHAMMAD SALEHI, M. RAEINI SARJAZ, and M.KH. ZIATABAR AHMADI, “RAINFALL-RUNOFF SIMULATION USING MATHEMATICAL MODEL BASED ON GEOGRAPHICAL INFORMATION SYSTEM FOR AMAMEH WATERSHED,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 15, no. 1 (SPECIAL ISSUE ON NATURAL RESOURCES), pp. 162–171, 2008, [Online]. Available: https://sid.ir/paper/9303/en

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