Title: Studying the effect of climate elements variability on surface water runoff and infiltration rate in Babylon province by using statistical analysis

Authors: Basima Abbas Jabir Al-humairi; Nadhum Shamkhi Rahal; Hayder A. Alalwan

Addresses: Technical Institute-Kut, Middle Technical University, Baghdad, Iraq ' Suwaira Technical Institute, Middle Technical University, Baghdad, Iraq ' Department of Petrochemical Techniques, Technical Institute-Kut, Middle Technical University, Baghdad, Iraq; Al-Turath University College, Baghdad, Iraq; Kut University Collage, Al Kut, Wasit, 52001, Iraq

Abstract: This research was conducted to predict surface water runoff (R_u) and w index for infiltration rate (I_n) depending on climate elements taken from a metrological directorate for a of 11 years. In addition, the relation between surface water runoff and {temperature (T_m), rainfall (P), relative humidity (H_u), wind speed (W_s), and w index for infiltration (I_n)}, was studied statistically using data fit software package. The surface water runoff and w index for infiltration was the (dependent variable), and the other climate elements were (independent variables). Several parameters such as coefficient of determination (R²), standard estimated error (SEE), root mean squared error (RMSE), mean absolute error (MAE) and relative error (RE) were determined using the strength of the relationship between estimated and observed values of surface water runoff and w index for infiltration and used to verify the generated model, then calculate the coefficient of the runoff between runoff and precipitation.

Keywords: surface water runoff; humidity; rainfall; temperature; w index; infiltration; data fit program; statistically; weather; runoff coefficient.

DOI: 10.1504/IJHST.2023.132584

International Journal of Hydrology Science and Technology, 2023 Vol.16 No.2, pp.107 - 121

Received: 21 Sep 2021
Accepted: 21 Feb 2022
Published online: 30 Jul 2023 *

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