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Title: Flood warning information for Portland (Chiswell)
Author: Environment Agency South West Region
Document Type: Monograph
This booklet presents information on the flood risk and control on the Isle of Portland. The flood warning service for Portland (Chiswell) in Dorset is operated from the Environment Agency Regional Office at Exeter. The service alerts residents of sea conditions which MAY cause flooding in sufficient time for them to take preventative action to protect their property and belongings. The flood warning service also alerts Weymouth and Portland Borough Council and the Police who put staff on standby. Portland (Chiswell) is at risk of flooding as a result of storm waves washing over the esplanade and Chesil Bank, or by percolation of sea water through Chesil Bank. In both cases, water will flow along roads and accumulate in low spots in Chiswell and along the causeway (Weymouth Road). Property can be flooded either directly by flood water, or as a result of wash water if traffic continues to travel through it. In addition, wind blown spray, shingle and waves may directly affect some properties, depending on their location. The depth of flood water accumulating and the number of properties affected will vary, depending on the severity of the storm and the length of time that conditions persist. Flood defences have been constructed to reduce the frequency and impact of flooding in Chiswell, however, they have not removed the possibility of flooding.
Publisher: Environment Agency
Publication Date: [after 1996]
Publication Place: Exeter
Subject Keywords: Disaster preparednessFlood controlFlood management policiesIslands
Geographic Keywords: Isle of PortlandDorset catchmentDorset
Extent: n.p. [8]
Total file downloads: 29

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