Runoff response to basin parameters in southwestern Nigeria

Ogunkoya, O. O.; Adejuwon, J. O.; Jeje, L.K.

doi:10.1016/0022-1694(84)90185-9

Cited by 22 publications

(10 citation statements)

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“…Rainfall events observed in the 7 th week in both Alalubosa and Agba drainage basins must have been used in replenishing the water deficit conditions created by August dry spell experienced in the two basins while the rainfall observed in the 31 st and 32 nd weeks in Agba basin might have also been used in replenishing the water deficit created by the dry condition observed between the 20 th and 30 th week in the basin coupled with the relatively large area of forest in the basin which might have aided the loss of much of the soil water to the atmosphere through transpiration process. These results support the earlier findings of Anyadike and Phil-Eze (1989), Ogunkoya et al (1984) and Adejuwon et al (1983).…”

Section: Resultssupporting

confidence: 83%

“…Specifically however, basin management in the study area can be carried out through: i. Afforestation programme: This will not only aid in promoting infiltration process during rainy season but will also help in conserving water supply for dry season usage. Ifabiyi(2000;2004);Atoyebi, (1995); Anyadike and Phil Eze, (1989);Ogunkoya, et al,(1984) Akintola, (1966). Paved parking lots can also be replaced with porous surfaces and rooftops redesigned to pond water.…”

Section: Management Implications Of Research Findingsmentioning

confidence: 99%

“…Studies earlier conducted in this field in other parts of Nigeria include those of Adejuwon et al, (1983) Ogunkoya et al, (1984) and Anyandike and Phil Eze (1989). All these studies focused on regional basins.The current investigation is a micro scale research and result from it is site specific.…”

mentioning

confidence: 99%

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Correlating pattern of river discharge with degree of urbanization in sub-catchments of River Asa in Ilorin, Nigeria

Iroye¹

2017

Ethiop. J. Env Stud & Manag

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Section: Resultssupporting

confidence: 83%

Section: Management Implications Of Research Findingsmentioning

confidence: 99%

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Correlating pattern of river discharge with degree of urbanization in sub-catchments of River Asa in Ilorin, Nigeria

Iroye¹

2017

Ethiop. J. Env Stud & Manag

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“…Physiographic features of basin is used in huge studies of climate, geology, geomorphology and hydrology like rainfall-runoff relationships, hydrograph properties, soil erosion, sedimentation and hydrological behaviors of drainage basins (Jolly 1982;Ogunkoya et al, 1984;Aryadike and Phil-Eze 1989). Qualitative and quantitative analysis of the drainage basins to evaluate the flash flood hazard has instigated many of hydrologists to determine the interrelationships between morphometric parameters and influence of flood (Patton 1988).…”

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confidence: 99%

Estimation of flash flood using surface water model and GIS technique in Wadi El Azariq, East Sinai, Egypt

Osta

Sabri

Masoud

2016

Preprint

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“…Regional-scale studies have also reported permeability and geology as important controls of runoff coefficients (Ogunkoya et al, 1984;Norbiato et al, 2009). Our results are consistent with these drivers as saturated hydraulic conductivity and soil bulk density are associated with permeability and pH is, among other factors, a product of parent material weathering.…”

Section: Cross-regional Similarities and Differencesmentioning

confidence: 99%

Ecohydrology in space and time: functioning and changes in the streamflow generation of catchments

Silva¹

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Surface freshwater yield is a service provided by catchments, which cycle water intake by partitioning precipitation into evapotranspiration and streamflow. Streamflow generation is experiencing changes globally due to climate-and human-induced changes currently taking place in catchments. However, the direct attribution of streamflow changes to specific catchment modification processes is challenging because catchment functioning results from multiple interactions among distinct drivers (i.e., climate, soils, topography and vegetation). These drivers have coevolved until ecohydrological equilibrium is achieved between the water and energy fluxes.Therefore, the coevolution of catchment drivers and their spatial heterogeneity makes their functioning and response to changes unique and poses a challenge to expanding our ecohydrological knowledge. Addressing these problems is crucial to enabling sustainable water resource management and water supply for society and ecosystems.This thesis explores an extensive dataset of catchments situated along a climatic gradient in eastern Australia to understand the spatial and temporal variation in their ecohydrological functioning and to potentially identify responses to climate-and human-induced changes. To address this aim, the thesis has four major objectives: 1) to investigate how streamflow similarity varies according to the annual water and energy balances and to determine to what degree biophysical drivers of runoff explain the observed spatial streamflow variability;2) to determine the changes in the drivers of key streamflow characteristics across different regions and scales;3) to examine long-term ecohydrological changes in the water and energy balances of catchments and separate out the climate-and human-induced components; and 4) to investigate trends in baseflow and separate the contribution of precipitation, potential evapotranspiration and elevated atmospheric CO2 feedbacks with vegetation.Three hundred and fifty five catchments were analysed spanning a tropical to Mediterranean climatic gradient in the Australian east coast over multiple periods of time. An extensive dataset was compiled and analysed, composed of: daily streamflow and precipitation time series, monthly satellite-based time-series of vegetation, model-based soil moisture and temperature, and spatial data of land-cover, topography, soil properties, physiography, bioregions and human population density. To address the first objective, catchments were classified using streamflow signatures and modelling was used to relate the spectrum of water and energy balances (Budyko framework) to the Trancoso, R. (2016) PhD Thesis, The University of Queensland Ecohydrology in space and time ii drivers of runoff generation (Dunne diagram). To address the second objective a robust statistical modelling framework was applied to understand changes in streamflow drivers with regions and scales. In the third objective, the temporal displacement into the Budyko framework and its decomposition into climate a...

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Runoff response to basin parameters in southwestern Nigeria

Cited by 22 publications

References 1 publication

Correlating pattern of river discharge with degree of urbanization in sub-catchments of River Asa in Ilorin, Nigeria

Correlating pattern of river discharge with degree of urbanization in sub-catchments of River Asa in Ilorin, Nigeria

Estimation of flash flood using surface water model and GIS technique in Wadi El Azariq, East Sinai, Egypt

Ecohydrology in space and time: functioning and changes in the streamflow generation of catchments

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