Open Access Open Access  Restricted Access Subscription Access

Approximation of Rainfall Intensity-Duration Frequency for Bayelsa State, Nigeria

Egop S. E.

Abstract


One of the most often utilized methods in water resources engineering is the approximation of the Rainfall Intensity-Duration-Frequency (IDF) relationship. Establishing the rainfall intensity-duration-frequency model and curves for Bayelsa State, Nigeria, is the goal of this study. The Nigeria Meteorological Agency (NIMET) provided 32 years of rainfall data, which was sorted for frequency analysis. The IDF model was developed using storm durations of 5, 10, 30, 60, 120, 240, 360, and 720 minutes, as well as the corresponding frequency of recurrence. The IDF curves for this investigation were created using the generalized empirical technique. The Nash-Sutcliffe Efficiency (NSE), Mean Absolute Error (MAE), Coefficient of Determination (), and Root Mean Square Error (RMSE) were used in the validation of the IDF formulation. The MAE, RMSE NSE and  were 27.17570584, 41.98048275, 0.98436661 and 0.985440633 which explains the model to be trustworthy for prediction.


Full Text:

PDF

References


Arimieari, L.W., Egop, S.E., & Arigbe, O.F. (2023). Estimation of Rainfall Duration Frequency Curve for Owerri, Nigeria. Journal of Water Resource Research and Development, 7(1), 1-12.

Hadadin, N.A. (2005). Rainfall intensity–duration–frequency relationship in the Mujib basin in Jordan. Journal of Applied Science, 8(10), 1777–1784.

Ehiorobo, J. O. (2012). Sustainable flood risk assessment and flood management in Nigeria: obstacles, challenges and solutions. Speech/Lecture delivered on the occasion of the end of the year luncheon/AGM of the Nigerian Institution of civil Engineers on Saturday December 15, 2012, Etuonovbe A.K., The devastating effect of flooding in Nigeria, TS06J Hydrography and Environment, FIG working week 2011, Marrakech, Morocco 2011.

Abida, H. & Ellouze, M. (2008). “Probability distribution of Flood Flows in Tunisia” Hydrol. Earth Syst. Sci., 12(1), 703–714.

Adenuga, I. O. (2002). Flood Frequency Analysis of Ogun River Basin” unpublished B.Eng. Thesis, Department of Water Resources Management and Agricultural Meteorology, College of Environmental Resources Management, University of Agriculture, Abeokuta.

Bayliss, A. C., & Reed, D.W. (2001). The use of Historical Data in Flood frequency estimation” Executive Summary for National Environmental Research Council, Oxfordshire, OX 10, UK.

Diana, S., & Jurate K., (2011). Flood frequency Analysis of Lithuanian rivers. Available at: www.leidykla.vgtu.lt/conferences/Enviro2011.

Ehiorobo, J. O & Izinyon O. C. (2013). Flood Frequency Analysis at Oshun River at Asejire Dam Site Nigeria. Journal of Earth Science and Engineering, 3(1), 292-300.

Ologhadien, I. (2022). Engineering Hydrology in River Basin Development, Port Harcourt, Nigeria. Pearl Publishers International Ltd.

Google (2024). Retrieved from: https://www.google.com/search?q=yenagoa&sca_esv=3bb09fe0d50eb362&rlz=1C1RLNS_enNG889NG889&udm=2&biw=1610&bih=777&ei=xJdfZ-WEBevhkdUPiaTg-AM&oq=yenogoa&gs_lp=EgNpbWciB3llbm9nb2EqAggAMgcQABiABBgKMgcQABiABBgKMgoQABiABBhDGIoFMgoQABiABBhDGIoFMgcQABiABBgKMgcQABiABBgKMgcQABiABBgKMgcQABiABBgKMgcQABiABBgKMgcQABiABBgKSJNPULkGWPA5cAJ4AJABAZgB0wGgAaQUqgEFMC42Lje4AQHIAQD4AQGYAgigAtoLqAIAwgINEAAYgAQYsQMYQxiKBcICBRAAGIAEwgIGEAAYBxgewgILEAAYgAQYsQMYgwHCAggQABiABBixA5gDA4gGAZIHBTEuMC43oAfRRg&sclient=img#vhid=H844RXRPMvVgMM&vssid=mosaic


Refbacks

  • There are currently no refbacks.