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Experimental Study of Rainfall-Runoff Process Through Calibrated Simulator; A Case Study of Auchi Polytechnic, Auchi, Edo State, Nigeria

Year 2022, Volume: 4 Issue: 2, 250 - 258, 04.07.2022

Abstract

The relationship between rainfall-runoff is a complex hydrological process that requires technical-based approaches to investigate and understand the interaction of the hydrological variables. A calibrated rainfall simulator was developed to produce storms at seven (7) predetermined rainfall intensities (RIs) over two (2) runoff plots (RPs). The runoff plot (RP) is 0.72 m2 and RPB is 0.5 m2 was inserted 0.3 m into the bare sandy loam. The results of the experimentation showed the first rainfall simulation attempt (RSA) of RI of 10.8mm/hr was completely lost to infiltration from the two runoff catchment plots. Subsequently, the RSA generated surface runoff intensities (SRI) and RPB produced higher SRI and volume compared to catchment plots (RPA). Conversely, the relationship of rainfall-runoff showed co-linearity between the simulated rainfall (SR) and generated surface flow RPA and RPB with the determinant of coefficients of 0.9926 and 0.9942 at P < 0.05. Therefore, the study’s finding is useful to develop a rainfall-runoff model under different runoff catchment areas for developing integrated water management schemes, hydraulic structures, and irrigation scheduling.

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There are 27 citations in total.

Details

Primary Language English
Subjects Geological Sciences and Engineering (Other)
Journal Section Research Article
Authors

Yahya Olotu This is me

Olawale O. Olanrewaju This is me

Afolabi A. Rodıya This is me

Adesoji P. Adekunle This is me

Publication Date July 4, 2022
Published in Issue Year 2022 Volume: 4 Issue: 2

Cite

AMA Olotu Y, Olanrewaju OO, Rodıya AA, Adekunle AP. Experimental Study of Rainfall-Runoff Process Through Calibrated Simulator; A Case Study of Auchi Polytechnic, Auchi, Edo State, Nigeria. IJESKA. July 2022;4(2):250-258.