Authors : Oghenekome Collins Ojoh; Moses Odigwe; Onyemenam, Prince Ike; Paul Odiyirin Boyitie

Volume/Issue : Volume 9 - 2024, Issue 11 - November

Google Scholar : https://tinyurl.com/4ezzaeby

Scribd : https://tinyurl.com/2d9kazy7

DOI : https://doi.org/10.38124/ijisrt/IJISRT24NOV196

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : The frequency and risk of flash floods in Ozoro have increased due to climate change and intense rainfall events. The territory was divided into five pre- existing communities throughout the three-month research period, which ran from July to September 2023. Measurements were made to ascertain the flood's volume, area, length, and depth. Using a regular rain gauge with a moveable geo-referenced device, rainfall data was gathered. The rainfall total for July 2023 dropped to 6732.6 mm, and by September of the same year, it further reduced to 1121.5mm. This resulted in a flood that covered an area of 6435m2 and had a volume of 14431.4m3 . The neighbourhood that experienced the highest level of flooding was Oruamahdu Quarters, with an average depth of 0.6 metres. The average rainfall rate is 89.7 millimetres per hour, suggesting heavy rainfall. The most return rainfall occurred in July, while the least amount occurred in August. The calculated F value of 77.34 indicates a substantial correlation between the volume of rainfall and the flood volume in Ozoro. Flood flow decreased at a rate of 11.57 m3/day over the study period. In Ozoro, the increasing intensity of rainfall is responsible for 85.6% of floods. To help city planners visualise the combined dangers of floods and drainage, the rainfall intensity-duration- frequency (IDF) curve should be employed as a metric for climate adaptation.

Keywords : Rainfall, Flood, Intensity, IDF, Ozoro.

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