Publication Date : 10/07/2020

Author(s) :

Mohammed Auwal, ADEOGUN Babatunde Korode, MUHAMMAD Mujahid Muhammad, ABDULLAHI SULE ARGUNGU.

Volume/Issue :
Volume 15
Issue 3
(07 - 2020)

Abstract :

This study focuses on water allocation for different purpose in Tiga dam, using WEAP model to carry out analysis of the hydrological and metrological information of the study area, with a view to settling the conflict between water allocation of Kano City and major irrigation project. The research commenced with a preliminary site investigation through reconnaissance survey to analyses hydraulic nature, agricultural activities, other activities related to water resources in the basin and site visit to collect metrological and hydrological data. These data were used in modeling of the hydrological process of Tiga Dam. The model was validate and calibrated using simulated net-evaporation and observe net-evaporation. 31 years metrological and hydrological data, population and their growth rate, irrigation area and number of industries from 1987 to 2017 were used in this WEAP model software which predict that in future time from 2031 to 2050 the dam cannot meet up with the total demand, it only capable of supplying annual average of 410.5 Mcm for agriculture with unmet demand of 123.7 Mcm, and when per hectare demand is increase by 33.9%( agricultural scenario) will supply 658.8 Mcm with unmet demand of 188 Mcm, 266.3Mcm for Kano population with unmet demand of 61.6 Mcm, and 301.3 Mcm when per capital demand is increase by 14.3% (Kano population scenario) with 75.3 Mcm unmet demand, 15.5 Mcm for Kano industries with unmet demand of 5.4 Mcm and 20.2 Mcm with 7 Mcm unmet demand when industrial allocation is increase by 30.4% (Kano industrial scenario). The Tiga Reservoir will generate 21288.8 GJ annual average hydropower with 161.98 GJ unmet hydropower demand from 2026. In general, this model predicts that the annual average future water supply from 2018 to 2050 for all purpose is 692.4 Mcm with unmet demand of 190.8 Mcm from 2031 but 980.3 Mcm for all scenarios with unmet demand of 270.5 Mcm.

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