Empirically Determined Passenger Ferry Navigable Routes within Lagos Lagoon

Abstract

Hydrographic surveys define shorelines and depths of lakes, streams, oceans, reservoirs, and other bodies of water. Sea surveying is associated with port and offshore industries and the marine environment, including measurements and marine investigations made by ship-borne personnel. In addition, accurate measurement and modelling of hydrographic information is important to control waterways boat services with existing roadway transportation services. This paper attempts an empirical analysis of hydrographic data to simulate waterway navigable route within Lagos Lagoon with a minimum under-keel clearance that must be maintained by vessel transiting a port as well as berthing. The field investigation was conducted between September 2015 and March 2016 to determine river bed topography with the deployment of DGPS receivers, Single beam SDE 28S echo sounder, speed boat, tidal observation and reduction. Hypack 2008 and Arc GIS software was used for data sorting, extraction and processing. It was observed that depth within the project area ranges between 0.0m to 14.82m when referred to the Lagos datum. Furthermore, waterway navigable chart was developed based on prevailing river bed topography along the study corridors as well as passenger ferry draught constraint. From this study, derived depths were analysed in form of graphs and charts that provides a suitable framework to support ferry transportation services within Lagos Lagoon as a complimentary mode to the dominantly depended road transportation services. Therefore, periodic hydrographic survey of the navigable routes is recommended specifically to identify possible channel accretion.

Assessment of commuters’ perception of water transportation safety and patronage in Lagos Metropolis, Nigeria

“…Also, Chukwuma (2014); Bassey & Nsa (2018) noted that inadequate water transport facilities was a major factor impeding the development of inland water transport in Nigeria. In another vein, Ndikom, (2013) and Adejare et. al., (2017) focused on the neglect and undervalue of water transport in Lagos State, while the work of Edelman, (2015) concluded that the plan to integrate the Bus Rapid Transit (BRT) with light rail schemes may not solve the congestion problem in Lagos metropolis, except it also incorporates the water transport mode.…”

“…In Oyadongha, (2014) ;Iheamnachor, (2014) and Akogun, (2014), they asserted that poor safety practices are perceived to be responsible for the high accident rate in water transport. Furthermore, studies by Adejare et al, (2017); Ogunbajo et al, (2017) and Ademiluyi et al, (2016) dwelled on the existing water transport facilities in terms of size and access to commuters in Lagos State. Also, Chukwuma (2014); Bassey & Nsa (2018) noted that inadequate water transport facilities was a major factor impeding the development of inland water transport in Nigeria.…”

Inland Water Transport and Urban Mobility in Ikorodu-Ebutte Ero Route, Lagos, Nigeria

“…Although, water transport is known to be comparatively cheaper and most efficient for riverine communities, this mode of transport is currently highly neglected and undervalued in the country (Ndikom, 2013;Adejare et al, 2017).…”

“…Lagos, the commercial capital of Nigeria has been observed to possess the necessary inland waterway network capacity to transport commuters to most parts of the city, but the waterways are grossly under utilized. The existing water transport facilities are inadequate both in terms of size and access to commuters (Adejare et al,2017;Ogunbajo et al, 2017). Ademiluyi et al, (2016) also observe that in spite of the numerous merits of water transport such as the low cost, larger capacity and safety, this mode of transport is yet to be fully tapped to achieve the potential benefits it possesses.…”

Bathymetric Survey and Topography Changes Investigation of Part of Badagry Creek and Yewa River, Lagos State, Southwest Nigeria

“…Thus, understanding seafloor morphology and its evolution is critical to scientific investigations of boundary layer processes. Hydrographic survey supports a variety of marine functions: port and harbour maintenance (dredging), coastal engineering (subsidence assessments and restoration projects), coastal management and offshore resources development [20].…”