Browsing by Author "Ganiyu Habeeb Oladimeji"

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    EFFECTIVENESS OF SELECTED LOW IMPACT DEVELOPMENT (LIDS) FOR SUSTAINABLE STORMWATER MANAGEMENT IN FAST-URBANIZING RESIDENTIAL AREAS
    (Ethiopian International Journal of Engineering and Technology (EIJET), 2024-10-20) Adeogun Adeniyi Ganiyu; Sanni Abubakar; Ganiyu Habeeb Oladimeji
    The global trend of urbanization has led to the widespread conversion of natural land cover to impermeable surfaces. This, in turn, is hindering water infiltration and exacerbating runoff from precipitation. This phenomenon has detrimental effects on the natural environment and water quality. To address these issues of stormwater generation, this study employed the Storm Water Management Model (SWMM) in conjunction with MapWindow Geographical Information System (GIS) v4.X, a hydrologic data software for data, visualization, editing, and integration with other modeling tools to simulate the impact of various Low Impact Developments (LIDs) on mitigating stormwater in the study area. The study area was divided into six sub-basins within the GIS environment and imported into SWMM to assess the effects of selected LIDs, including green roofs, rain gardens, vegetative swales, and permeable pavements. The SWAT model was used to predict water flow in the Malete watershed and surface runoff. The study identified areas susceptible to erosion and categorized them as low, moderate, severe, and extreme. The results showed that permeable pavements exhibited the highest reduction rate, reducing stormwater by approximately 50% across all sub-basins, while green roofs showed the lowest reduction rate of only 0.003%. Regional calibration was implemented, revealing a significant correlation of 71% between simulated and observed flows in the study area. The findings of this study can serve as a valuable decision-support tool for stakeholders and authorities when selecting appropriate LID practices to mitigate the urban impact of stormwater generation.
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    GIS-Based Prediction and Comparative Analysis of Potential Evapotranspiration using Selected Methods at Omi-Kampe Watershed, Nigeri
    (2022-03) Adeogun Adeniyi Ganiyu; Adeyemi .E.O.; Ganiyu Habeeb Oladimeji
    The study predicted potential evapo-transpiration (PET) of Omi Kampe watershed upstream in Kogi State, Nigeria using Soil and Water Assessment Tool (SWAT) based on Priestley Taylor, Penman Monteith and Hargreaves methods. The model input data used were Digital Elevation Model, Soil map, Land use map and 30-year temporal weather data (January 1987- December 2016) for the simulation of the hydrological processes. The results showed that Penman Monteith and Hargreaves methods exhibited high correlation in the predicted values of PET while Priestley Taylor results for PET are least correlated with the other two methods and suspected to have under predicted PET values. On the other hand, all the three methods predicted the actual evapo-transpiration of the watershed with insignificant result variations. Outcome of this research could serve as a guide to water professionals and other stakeholders in selecting appropriate methods for evaluation of PET in the study area and sub region in Nigeria.
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    Simulation of Sediment Concentration, Nitrogen and Phosphorus Loads: Case Study of Landzu River Watershed, Nigeria
    (2021-11-27) Adeogun Adeniyi Ganiyu; Abdullahi .A.; Ganiyu Habeeb Oladimeji; Mohammed Abdulrazaq Apalndo
    Pollution of water bodies has been known over the years to have detrimental effect on human being, aquatic life, as well as the reduction in the quality and quantity of the irrigated crops. Different land management practices from agriculture, urbanization and waste disposal on the water ways through surface runoff has led many rivers to be excessively rich in nutrient and consequently resulting into water pollution. Therefore, simulation of hydrological processes of the watershed is critical to providing insight into the level of nutrients in water for better management of the watershed. This study utilized Soil and Water Assessment Tool (SWAT), a hydrological modelling tool interfaced with Geographical Information System (GIS) to predict sediment concentration, phosphorus and nitrogen loads downstream of Landzu River watershed, Niger state, Nigeria. The simulation was carried out for 30 hydrological years using relevant spatial and temporal data available for the watershed. Uncaliberated results generated by the model showed that the annual average sediment concentration of the watershed was predicted as 5055.28 mg/l/yr. Annual average organic phosphorus (PO4-P) was predicted as 75820 mg/ha/yr and organic nitrogen as 741379 Mg/ha/yr. Prioritization of the sediment concentration and Nutrients load revealed that Landzu River watershed was located in subbasin 93 of the entire watershed within the zone of low sediment concentration, severe zone of phosphorus load and moderate zone of nitrogen load. The outcome of this study could be adopted by appropriate stakeholders and relevant authorities for sustainable management of sediment and nutrient loadings in the watershed