Background: Populations in coastal cities are exposed to increasing risk of flooding, resulting in rising damages to health and assets. Adaptation measures, such as early warning systems for floods EWSFs , have the potential to reduce the risk and impact of flood events when tailored to reflect the local social-ecological context and needs. Community perceptions and experiences play a critical role in risk management, since perceptions influence people's behaviors in response to EWSFs and other interventions. Methods: We investigated community perceptions and responses in flood-prone periurban areas in the coastal city of Machala, Ecuador. Discussions were audio recorded, transcribed, and coded by topic. Participatory maps were field validated, georeferenced, and digitized using GIS software.
The Somerset Levels Flood Case Study - Internet Geography
As the sea-level rises, saltwater intrusion of groundwater tables also becomes a problem. This is related to the high volume of groundwater extraction, with additional pressure from construction and natural consolidation of sedimentary layers. Jakarta is also preparing a Sea Defence Wall Master Plan to protect the Northern Jakarta from inundation caused by increase in sea level and land subsidence and is now pursuing the development of a larger adaptation strategy. A set of measures are planned to minimize land subsidence, including limiting groundwater extraction, providing sufficient supply of raw water from surface water, developing water retention basins, and building absorption wells called biopores 1 million planned. The restriction on groundwater extraction, decreed by regional regulation, is a key measure for slowing down land subsidence.
Like other estuaries in Essex, these are at risk of flooding because:. Together these mean there is a significant risk of flooding in South Essex from high tides and storm surges. It was a combination of these that caused the floods. In a year annual probability flood , Foulness, Wallasea, Potton and Canvey Island would be inundated.
The effects of climate change causing rising sea levels and wetter, stormier winters will increase the future risk of flooding. View the other parts of the video and related key stage 4 and post material on storms and flooding on this page. Natural flood management guidance from the Woodland Trust. This provides a useful set of visual aids to help in teaching the various forms natural flood management can take. See also advice from SEPA Scottish environmental protection agency in this handbook , which looks at case studies for a variety of areas: coastal, urban and rural.