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In England and Wales, the Environment Agency requires a professional Flood Risk Assessment (FRA) to be submitted alongside planning applications in areas that are known to be at risk of flooding (within flood zones 2 or 3) and/ or are greater than 1ha in area, planning permission is not usually granted until the FRA has been accepted by the Environment Agency.
The resulting floodplain map is referred to as the 100-year floodplain. Estimates of the 100-year flood flowrate and other streamflow statistics for any stream in the United States are available. [3] In the UK, the Environment Agency publishes a comprehensive map of all areas at risk of a 1 in 100 year flood. [4]
The software incorporates a user interface for building, running and viewing the results of models, including a GIS map interface. The software has been independently benchmarked [1] by the Environment Agency and is used extensively [2] to undertake modelling of flood risk, [3] develop flood risk management schemes and provide flood forecasting ...
In the UK, the Environment Agency has produced maps which show areas at risk. The map to the right shows a flood map for the City of York, including the floodplain for a 1 in 100-year flood (dark blue), the predicted floodplain for a 1 in 1000 year flood (light blue) and low-lying areas in need of flood defence (purple). The most sustainable ...
A flood insurance rate map (FIRM) is an official map of a community within the United States that displays the floodplains, more explicitly special hazard areas and risk premium zones, as delineated by the Federal Emergency Management Agency (FEMA). [1]
The Environment Agency carries out an advisory function in development control – commenting on planning applications within flood risk areas, providing advice to assist planning authorities in ensuring that any development is carried out in line with the National Planning Policy Framework.
These maps are to be in place by December 2013 and will include detail on the flood extent, depth and level for three risk scenarios (high, medium and low probability). Third step: Flood Risk Management Plans: Flood Risk Management Plans are meant to indicate to policy makers, developers, and the public the nature of the risk and the measures ...
GIS and citizen science go hand-in-hand. Web-based mapping platforms serve as useful tools for national conservation societies, local community groups and planning departments to compile tangible data on environmental issues. Voluntary, grassroots approaches can help compile lay knowledges that feed back into more formal political frameworks.