GG231 Lecture Notes - Lecture 15: Grand River Conservation Authority, River Engineering, Cold Front
Document Summary
Fronts: data shows a relation between the peak discharge of a flood and its average recurrence, floods peak discharge can be compared at any station along the river can be compared with discharges measured overtime at that station. Adjustments to flooding: the structural approach, physicalbarriers/floodproofing. Floodways that bypass populated areas storm-water basins: channelization. Approach: floodplainregulation, the goal is to maximize the benefits that floodplains offer while minimizing flood damage and the cost of flood protection, the best adjustment from an environmental perspective, flood-hazard mapping, flood-hazard evacuation, relocation. Removal of people from their homes and resettling them in an area less prone to flooding: channelrestoration usedtomitigatetheimpactofchannelization. Risk management strategies often have to incorporate both structural and non- structural solutions within the larger plan. As the storm intensifies, the cold front may overtake the warm front and come into contact with another cool air mass, forming an occluded front.
