Water availability in a Nigerian sub-catchment of River Niger and its implications for food security
AFRICAN GEOGRAPHICAL REVIEW(2023)
摘要
This study aims at assessing runoff characteristics and water availability between 1955 and 2019 in the Nigerian sub-catchment of River Niger upstream of Baro, central Nigeria, and the implication for food security in the nation. The discharge regime of the sub-catchment is characterized by single peak, which occurs in September. The sub-catchment's runoff coefficient ranged between 23% and 32% for the period 1955-1970; 9% and 22% for 1971-1990; 45% and 55% for 1994-1999; and 15-33% for 2000-2019. The study observed a decline in river flow and water availability due to climate variability. This indicates impending problems of water crises and food insecurity.
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关键词
Water availability, River Niger, Nigerian sub-catchment, food security
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