Author(s) :

N.J. Shanono.

Volume/Issue :

Abstract :

This paper explores the utilization level of the Tiga and Challawa Gorge dams and examineswhether these dams are been utilized effectively. The analysis employs a reservoir mass balance model to simulate dam operation using the monthly historical and hypothetical datasets for 10 years. The results revealed that the dams have been grossly underutilized with an average total historic annual yield of 1,800 Mm3 and a spill of 1,554 Mm3. When the releases were hypothetically increased without stressing the reservoir to failure, the average annual yield improved to 4,025 Mm3and the spill reduced to 489 Mm3. This produced a corresponding percentage increase in annual yield of 124% (2,225 Mm3) and a percentage reduction in annual spills of 69%. The 30% of 2,225 Mm3 (668 Mm3) can be used for domestic water supply to 12 million people annually. Meanwhile, 70% (1,557 Mm3) canbe used to irrigate an additional land of more than 95,000 Ha, which was estimated to generate economic returns of nearly 550 Billion Naira. This will immensely contribute to the economy of Kano State, thereby improving social well-being, food security and sustainable coexistence. Keywords: Dam water utilization, Irrigated agriculture, Water supply, Kano State, Nigeria

No. of Downloads :

0