Skip to main content

Posts

Showing posts with the label flooding

Assessment of Rainfall Scenario in Determining Flood Risk at Terengganu Watershed Malaysia | Chapter 02 | Emerging Issues in Science and Technology Vol. 3

The future of climate lies on the hand of individual who is an active member that contributes input in the biosphere. The amount of climate change will largely influence the water flow in the river through the emission of solar radiation, increase in temperature, heat-trapping gases. There is a need to control pollution, flood hazard, check water quality and monitor sediments and water flow in the drainage basin. Soil and Water Assessment Tools SWAT is one of the best methods of the application being used for hydrologic assessment as well as monitoring events that occur in the catchment studies. Mitigation can simply determine how to reduce the human hazard, in controlling the climate change that affects water flow in river Terengganu. The Soil Water Assessment Tool (SWAT) provides the simulated rainfall from 1973 to 2017. The precipitation and other weather parameters were used for the purpose of this study and the resultant effect is the production of predictive flood hazard event...

Flooding Incidence and Drainage Network Analysis in Bonny Island, Nigeria | Chapter 09 | Emerging Issues in Science and Technology Vol. 2

The incidence of occasional flooding of an estate, a tank farm in Bonny Island, Niger Delta was investigated. The study was carried out to identify the remote causes of flooding and in turn proffer a solution. Detail field investigation involved identification of thirty one road side drains of rectangular cross-section; measurement of drains inverts (spot heights) at selected locations yielded estimates of longitudinal slopes (0.000416 – 0.0074 m/m), a case of very mild slopes. The invert profiles of 15 road side drains indicated a case of inconsistent slopes, a mix of positive and negative slopes over short intervals, the observation accounts for siltation and ponding in the drains. The redesigns of the existing drains were actualized via the use of MODRAIN code, based on the principle of best hydraulic section with input data options for rectangular or trapezoidal channels; constant or variable bottom slopes and runoff coefficient(s). A comparison of the existing and newly designe...