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Description
Recorded Flood Outlines is a GIS layer showing historic flooding from rivers, the sea, groundwater, and surface water. Records began in 1946 when predecessor bodies to the Environment Agency started collecting detailed information. The dataset includes flood extents affected by overtopping, breaches, or blockages, but does not necessarily indicate internal property flooding.
Use Cases
Model flood risk based on recorded flood extents from multiple sources.
Analyze historical flood patterns based on records dating back to 1946.
Assess the impact of infrastructure like defenses on flood extents based on the description.
Strengths
Records began in 1946, providing a long-term historical perspective.
Includes flooding from rivers, the sea, groundwater, and surface water.
Considers the presence of defenses and infrastructure at the time of flooding.
Limitations
The absence of a flood outline does not mean an area has never flooded.
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Provenance
Source
Environment Agency
Collection Method
Collected by predecessor bodies to the Environment Agency.
Time Range
Records from 1946 onward, with possible limited details prior.