Determination of Short Term Erosivity Index for Goronyo Dam, Sokoto State, Nigeria Determination of Short Term Erosivity Index for Goronyo Dam, Sokoto State, Nigeria – Direct Research Journal of Engineering and Information Technology
Original Research Article

Determination of Short Term Erosivity Index for Goronyo Dam, Sokoto State, Nigeria

Abdulrahman, N.,

Awoniyi, G. O.,

Shaaba M.U.

Yunusa, A.

Article Number: DRJEIT20858065
DOI: https://doi.org/10.26765/DRJEIT20858065
ISSN: 2354-4155

Vol. 11 (7), Pp. 122-126, July 2023

Copyright © 2023

Author(s) retain the copyright of this article

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Creative Commons Attribution License 4.0.


Abstract

Rainfall erosivity, considering rainfall amount and intensity, is an important parameter for soil erosion risk assessment under future land use and climate change. The rainfall parameter that expresses the capacity to promote soil erosion is called rainfall erosivity (R), and is commonly represented by the indexes EI30 and KE>25. The evaluation indicated that by defining an erosive rainfall event as(a) rainfall ≥ 12.5 mm or (b) rainfall intensity > 6 mm per 15 minutes. The R factor of the station under studied at Goronyo Dam for year 1988 was 3670.3 J mm/M2yr and that of year 1989 was 558.68 J mm/M2 yr respectively. Therefore, the availability of a rainfall erosivity map is a key issue not only for soil erosion and landslide risk assessment but also for agricultural management practice, soil conservation and climate change.

Keywords: Erosion, rainfall, water, soil
 Received: June 8, 2023  Accepted: July 25, 2023  Published: July 31, 2023


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