EESA07H3 Final: Final Notes
24 Jun 2019
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Document Summary
4, 5, 6, 7, 8, 9, (pgs 200-202) and. Floods: post-flood analysis factors, one other major factor => sediment type and availability. Land use (cont pg 10-11) engineering modifications: high intensity short duration: Large amount of precipitation falls in a very short period of time (flash flood: low intensity long duration: Structural approach to floodplain management: leeves, concrete floodwalls, floodways (example: red. River floodway in winnipeg: dams, channelization seawater driven by high winds, often accompanied by tsunamis. Details: flood events are assumed to occur randomly, following the laws of probability. Page 2: two key weaknesses to predicting flood intensity by using past frequency, available hydrologic data often shorter than required to make accurate predictions. Flooding impacts and trends: loss of life and property damage => disease, water supply contamination, mud damage, munich re. Observarory => increasing trend in annual numbers of high magnitude floods: reasons, climate change, more people and property on flood-prone areas (mostly floodplains)
