DETERMINATION OF RAINFALL-RUNOFF RELATIONSHIP BASED ON SOIL PHYSICAL PROPERTIES FOR USE IN MICROCATCHMENT WATER HARVESTING SYSTEM DESIGN

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SEPASKHAH A.R.; MOOSAVI FARD S.R.

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Journal: IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING Year:2010 | Volume:34 | Issue:B4 (CIVIL ENGINEERING) Page(s): 447-460

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Title

DETERMINATION OF RAINFALL-RUNOFF RELATIONSHIP BASED ON SOIL PHYSICAL PROPERTIES FOR USE IN MICROCATCHMENT WATER HARVESTING SYSTEM DESIGN

Author(s)

SEPASKHAH A.R. | MOOSAVI FARD S.R. | Issue Writer Certificate

Keywords

RUNOFF SUB-MODEL

MICROCATCHMENT WATER HARVESTING SYSTEM

RAIN-FED VINEYARD

MICROCATCHMENT AREA

GREEN-AMPT EQUATION

Abstract

This paper describes a subroutine for estimation of daily and average annual runoff in a computer model for microcatchment design and prediction of rain-fed grape yield in the Bajgah area, Fars province, Islamic Republic of Iran. In this subroutine, it is assumed that all abstractions arise from infiltration, and a method for determining ponding time and infiltration by using recording rain gage data and soil physical properties was developed based on the Green-Ampt infiltration equation. This subroutine was then incorporated into a previously developed model to design the MICROCATCHMENT AREA and grape yield prediction. The developed subroutine resulted in a daily microcatchment runoff coefficient of 0.0737 in the study area which is similar to the measured value of 0.080. The daily threshold rainfall to produce daily runoff estimated by the developed subroutine was 6.5 mm where its measured value was 4.6 mm. The developed subroutine resulted in a microcatchment average annual runoff coefficient of 0.0894 in the study area, which is similar to the measured value of 0.0875. The annual threshold rainfall to produce annual runoff was estimated by the developed subroutine, and was 158.8 mm where its measured value was 106.5 mm. The estimated relationship between annual runoff and rainfall was used in the model and estimated the MICROCATCHMENT AREA and grape yield properly. In general, it is indicated that the developed subroutine is able to determine the daily and annual runoff-rainfall relationship to be used in the model for the design of the micricatchment area and prediction of grape yield in the study area.

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APA: Copy

SEPASKHAH, A.R., & MOOSAVI FARD, S.R.. (2010). DETERMINATION OF RAINFALL-RUNOFF RELATIONSHIP BASED ON SOIL PHYSICAL PROPERTIES FOR USE IN MICROCATCHMENT WATER HARVESTING SYSTEM DESIGN. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING, 34(B4 (CIVIL ENGINEERING)), 447-460. SID. https://sid.ir/paper/564093/en

Vancouver: Copy

SEPASKHAH A.R., MOOSAVI FARD S.R.. DETERMINATION OF RAINFALL-RUNOFF RELATIONSHIP BASED ON SOIL PHYSICAL PROPERTIES FOR USE IN MICROCATCHMENT WATER HARVESTING SYSTEM DESIGN. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING[Internet]. 2010;34(B4 (CIVIL ENGINEERING)):447-460. Available from: https://sid.ir/paper/564093/en

IEEE: Copy

A.R. SEPASKHAH, and S.R. MOOSAVI FARD, “DETERMINATION OF RAINFALL-RUNOFF RELATIONSHIP BASED ON SOIL PHYSICAL PROPERTIES FOR USE IN MICROCATCHMENT WATER HARVESTING SYSTEM DESIGN,” IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING, vol. 34, no. B4 (CIVIL ENGINEERING), pp. 447–460, 2010, [Online]. Available: https://sid.ir/paper/564093/en

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