http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/34 SET 2026-05-13T21:42:28Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31136 Title: Post-millennial Urbanisation Dynamics of the Traditional Inner City Core of Ibadan Authors: Adeleye, Bamiji Michael; Magidimisha-Chipungu, Hangwelani Hope; Chipungu, Lovemore; Ohadugha, Chukwudi Bernhard; Liman, Hassan Shuaibu; Popoola, yobami Abayomi Abstract: The rate of urbanisation has been fast-tracked by post-millennial occurrences within traditional cities. In understanding urbanisation trends in cities in Africa, such as Ibadan, limited evidence and study have documented the post-millennial changes in the organic and traditional inner city landscapes. Despite the unplanned and uncoordinated urbanisation that is characterised by the influx of people into the inner city core of Ibadan, knowledge in respect of the spatial growth of the inner city local government areas (LGAs) is lacking. The aim of this study was to analyse the form, trends and intensity of urban expansion in the traditional inner city core of Ibadan between the years 2000 and 2020. To attain the aim of this study, three sets of satellite imageries (the Enhanced Thematic Mapper for 2000 and the operational Land Imagers for 2013 and 2020) were subjected to a maximum likelihood supervised classification. The study revealed that four types of urban expansion intensity (highly rapid, rapid, moderate, and very low) were identified as the areas of expansion in the built-up environment −from 6603.12ha to 10287.54ha. The study also revealed that for the period, 2000- 2013, all the local government areas within the core of Ibadan experienced edge expansion, while leapfrogging was identified in two) local government areas, namely, Ibadan North andIbadan Northeast, and edge expansion in three, namely, Ibadan Southwest, Ibadan Southeast, and Ibadan Northeast for the period, 2013 - 2020. The study further revealed varying urbandensification areas within the local government areas in the core of Ibadan, where the urban intensity and expansion types were being influenced by the urban densities recorded in each local government area in the Ibadan core. This study concluded that swift urban planning is required to address the urban sprawl at the edge of each of the inner city LGAs of Ibadan. 2025-07-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31097 Title: FLOOD RISK MAPPING AND VULNERABILITY MODELING OF GIDAN KWANO VILLAGE, BOSSO LOCAL GOVERNMENT AREA, MINNA, NIGER STATE. Authors: IBRAHIM, P.O Abstract: Flood management encompasses the holistic and continuous assessment, evaluation and reduction of flood risks. To manage flood in real time format and with high accuracy, it is important to explore both direct and social survey approach. In view of seasonal flooding within Gidan Kwano village resulted to this research. Data were acquired using ’’Hi-Target V30’’ Differential Global Positioning System (DGPS), receivers on Real Time Kinematic (RTK) mode; the acquired data were in Nor things, Easting, and Height (N, E and H) format in order to determine well densified spot heights of points on the ground. Contour map of the area was produced using 0.5 contour interval (C.I), Digital Elevation Model (DEM) of the area was produced to show the raster surface of the area using Surfer 10. Carlson AutoCAD 2010 was used to process the data and stream network was generated to show the direction of flow. Questionnaires were administered within the locally perceived to be prone/vulnerable to flood, to ascertain the nature, degree and consequences/impact of the flood occurrence. The shape file of the structures and other details where overlaid on the spot heights of the area; vulnerability map of the area was produced, together with the shape file of the stream using Arc GIS 10.2 and a buffer zone was determined from the center of the stream after thorough examinations of all the sets of data. Drainage of high standard should be constructed taking the stream course. Those houses within the buffer zone should be demolished and smaller drainage should be constructed within the buildings which are not within the vulnerability zone. 2017-10-02T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31096 Title: Bathymetric Survey and Volumetric Analysis for Sustainable Management Case Study of Suleja Dam, Niger State, Nigeria Authors: Samaila – Ija, H. A.; Ajayi, O. G.; Zitta, N.; Odumosu, J. O.; Kuta, A. A.; Adesina, E. A.; Ibrahim, P. O Abstract: Ocean floor and the shape of the shoreline are major influencers of the changes in tidal propagation. Bathymetry; a survey operation aimed at determining the nature of the underwater level and topography of a water body’s bed level plays a cogent role in the determination of both the shape of the shoreline and the ocean floor thereby aiding the monitoring and spatio-temporal modelling of the changes in tidal propagation as much as it ensures the availability of hydro-data which is the foundation of a Maritime Database Management System (MDBMS). This work presents the findings of the bathymetric survey and volumetric analysis of Suleja Dam located in the North central Region of Nigeria. The Differential Global Positioning System receiver (DGPS) (Promark 3), automatic level, echomap 50s in conjunction with the engine boat were used during this research. The data acquired was processed using the GNSS solutions software with the chart plotted in surfer 9 software environment. The surface area of the dam was discovered to be 24.64ha less than the designed area. Also the volume of water was found to be 3.6 x 106m3 in contrast to the design volume of 34.7x106m3. It was also observed that the lowest water depth was 0.56m and the highest water depth was 22.06m, therefore a difference of 5.94m was obtained as against the initial construction depth of 28.00m. The undulating nature of the reservoir bed and the difference in volume of water and surface area covered by the dam are pointers and clear indications of sedimentation and siltation process going on in the dam. 2014-06-02T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31095 Title: Modelling topo‑bathymetric surface using a triangulation irregular network (TIN) of Tunga Dam in Nigeria Authors: Ibrahim, Pius Onoja; Harald, Sternberg; Samaila‑Ija, Hassan A.; Donald, Adgidzi; Nwadialor, I. J. Abstract: Dams are built to store the water flowing from upstream to downstream. Sedimentation and siltation are some of the major problems affecting the storage capacity of dams. For effective management, bathymetric and topographic data are used to assess this challenge. In the Mambila Plateau of Taraba, Nigeria, the Tunga Dam is a multifunctional reservoir that serves as a small hydropower, irrigation and domestic use dam. Nonetheless, it is not operating to its full potential, leading to issues such as frequent stoppage of the turbine, low irrigation activities and a shortage of water supply for domestic use. To determine the basin’s approximate present volume, a topographic and bathymetric survey was conducted using a differential global positioning system (DGPS)-Hi-Target V30 and a single beam echosounder to acquire the real-time data. The data were processed, and the digital elevation model (DEM) of the study area was modelled using a triangulation irregular network algorithm (TIN). The deepest point of the dam was found to be 21.25 m, and the volumetric capacity was assessed based on the elevations. The tessellation data format adequately represents the reservoir DEM for future purposes to better enhance the reservoir capacity. Hence, the research suggested that dredging should be carried out to boost the basin’s capacity. Likewise, an embankment can be constructed around the dam to enhance the basin’s storage capacity. The dredged material can be used to achieve the barrier’s building, which will reduce the overall cost. 2021-05-10T00:00:00Z