DEVELOPMENT OF INTENSITY-DURATION- FREQUENCY CURVES “IDF” FOR DOHUK CITY IN KURDISTAN REGION OF IRAQ

AUMED RAHMAN M  AMEN; DALSHAD AHMED  KAREEM; AYUB ANWAR  MIRZA; ABDULQADIR MOHAMMED  SALIH

doi:10.26682/sjuod.2022.25.2.34

AUMED RAHMAN M AMEN Dept. of Civil Engineering, Faculty of Engineering, Soran University, Soran 44008, Kurdistan Region-Iraq
DALSHAD AHMED KAREEM Erbil Technology College, Erbil Polytechnic University, Kurdistan Region-Iraq
AYUB ANWAR MIRZA Center of Languages, University of Dohuk, Dohuk 42001, Kurdistan Region-Iraq
ABDULQADIR MOHAMMED SALIH Duhok Dam Directorate, Resident Engineer in Khanas Dam Project, Dohuk 42001, Kurdistan Region-Iraq

DOI: https://doi.org/10.26682/sjuod.2022.25.2.34

Keywords: IDF Relationship, Gumbel Method, Log Pearson Type III Rainfall Duration, Duhok City

Abstract

Dohuk city is hydrologically located in a relatively narrow watershed bounded by mountain ridges with heavy rainfall seasons. Due to its topographical characteristics and rapid urban development, the city is prone to floods during intense rainfall events or storms and in need of a proper storm water drainage system and flood control hydraulic structures for managing intense storm rainfalls, avoiding urban flooding, property loss, and most importantly human casualties. Nevertheless, the local civil engineers are in need of having up-to-date hydrological formulas, relationships, and information in order to be able to adequately design the flood control hydraulic structures. One of these important relationships is IDF curves which correlates the Intensity, Duration, and Frequency of an observed rainfall event. The authors have been able to develop updated IDF curves and empirical intensity formulas for Dohuk city by converting maximum annual rainfall readings for 21 consecutive years (2000-2020) into sub-daily rainfall records for durations of 10, 20, 30, 60, 120, 180, 360, 720, 1440 minutes with recurrence intervals of 2, 5, 10, 25, 50, 100 years using Gumbel and Log Pearson distribution (LPT III). The accuracy and reliability of the results were statistically confirmed through applying coefficient of determination with the value of (R²=1) and Goodness of fit test (Chi-square) with the confidence degree of (95%)

Downloads

Download data is not yet available.

References

Koutsoyiannis, D., Kozonis, D., & Manetas, A. (1998). A mathematical framework for studying rainfall intensity-duration-frequency relationships. Journal of hydrology, 206(1-2), 118-135.
Rashid, M., Faruque, S. B., & Alam, J. B. (2012). Modeling of short duration rainfall intensity duration frequency (SDRIDF) equation for Sylhet City in Bangladesh. ARPN J Sci Technol, 2(2), 92-95.
Dupont, B. S., Allen, D. L., & Clark, K. D. (2000). Revision of the rainfall-intensity-duration curves for the Commonwealth of Kentucky. Kentucky Transportation Center, College of Engineering, University of Kentucky. Econ. Geogr, 47, 438-451.
Chow, V.T., (1988). Handbook of Applied Hydrology. McGraw-Hill Book.
Nhat, L. M., Tachikawa, Y., & Takara, K. (2006). Establishment of intensity-duration-frequency curves for precipitation in the monsoon area of Vietnam. Annuals of Disas. Prev. Res. Inst, 49(B), 93-103.
Tao, D. Q., Nguyen, V. T., & Bourque, A. (2002, June). On selection of probability distributions for representing extreme precipitations in Southern Quebec. In Annual conference of the Canadian society for civil engineering (pp. 1-8).
Elsebaie, I. H. (2012). Developing rainfall intensity–duration–frequency relationship for two regions in Saudi Arabia. Journal of King Saud University-Engineering Sciences, 24(2), 131-140.
Acar, R., & Senocak, S. (2008). Modelling of Short Duration Rainfall (SDR) Intensity Equations for Ankara, Turkey. Republic of Macedonia, 1-9.
AlHassoun, S. A. (2011). Developing an empirical formula to estimate rainfall intensity in Riyadh region. Journal of King Saud university-engineering sciences, 23(2), 81-88.
Jalee, L. A., & Farawn, M. A. (2013). Developing rainfall intensity-duration-freqency relationship for Basrah City. Kufa Journal of Engineering, 5(1).
Rasel, M. M., & Islam, M. M. (2015). Generation of rainfall intensity-duration-frequency relationship for North-Western Region in Bangladesh. IOSR Journal of Environmental Science, Toxicology and Food Technology, 9(9), 41-47.
Zope, P. E., Eldho, T. I., & Jothiprakash, V. (2016). Development of rainfall intensity duration frequency curves for Mumbai city, India. Journal of water resource and protection, 8(07), 756.
Al-Awadi, A. T. (2016). Assessment of intensity duration frequency (IDF) models for Baghdad city, Iraq. Journal of applied sciences research, 12(2), 7-11.
Al-Shaikh, A. A. (1985). Rainfall frequency studies for Saudi Arabia [M. Sc. thesis]. Riyadh: Civil Engineering Department, King Saud University.
Oyebande, L. (1982). Deriving rainfall intensity-duration-frequency relationships and estimates for regions with inadequate data. Hydrological Sciences Journal, 27(3), 353-367.
Kareem, D. A., M Amen, A. R., Mustafa, A., Yüce, M. I., & Szydłowski, M. (2022). Comparative Analysis of Developed Rainfall Intensity–Duration–Frequency Curves for Erbil with Other Iraqi Urban Areas. Water, 14(3), 419.
Yabin Sun1 , Dadiyorto Wendi2,3, Dong Eon Kim4,5 and Shie Yui Liong4 (2019). Deriving intensity–duration–frequency (IDF) curves using downscaled in situ rainfall assimilated with remote sensing data. Sun et al. Geosci. Lett.
Shaun Turney (2022). Articles by Shaun Turney, Retrieved November 1, 2022, From https://www.scribbr.com/statistics/chi-square-distribution-table