I am going to study urban floods.
Especially the cause of flash flood in urban areas.
Could you please suggest me main question in this term.
Dear Dr Alshammari
What are the morphological parameters contributing to sudden floods in the urban environment.
I send you a work on urban flooding.
Best regards
There can be numerous contributing factors, such as many urban areas are located along river floodplains, sea ports (surge zones) to have rapid access to past or current needs for water transport. Certainly the imperveous and compacted surfaces of urban areas contribute, and watershed management including land use practices have often converted increasing areas of forests and grasslands to development. The sudden floods are typically related to extreme and sudden rainfall events, unless there is some upstream sources such as dam failures or areas of warm rain on snowpack. With better detecting, forecasting and communications today, there are increased potential for warning. Difficulty becomes in how fast can urban areas respond and move to safety. Some coastal areas are subject to Tsunami, from earthquakes, large landslides, etc. Flooding is a natural response of streams and rivers, which can be increased or reduced by channel responses to erosion and sediment, such as braided channels filled by excess sediment flood frequenty, while gully channels are so entrenched, they almost never flood except in mass bank failures. Some coastal areas are faced with somewhat rapid flooding due to high tides (eg, full or new moon period) timed with major storm or wind event. Many urban areas, besides being poorly located, have not been well designed structurally to be able to handle the typical urban expansion of more roads, homes, buildings, land use changes and there contributing effects to flooding severity. Not all urban areas have the same issues concerning flooding and stormwater management. So depending on one's perspective, severe rainfall or extreme event, poor location or design of urban area, poor watershed and stormwater management, large forest wildfires, lack of response to forecast of extreme events such as lowering water levels in upstream dams, etc. could all cause or contribute to rapid flooding.
Thanks so much William,
It is very importan that you said. Urban Area needs more study espesilly in hydrolgy, in climate changes.
- Badges
- Science topic
- Similar topics
- Biological Science
- Physiology
- Physiological Processes
- Stress