Spatial prioritisation of catchments suitable for using Natural Flood Management
This dataset concerns the spatial prioritisation of catchments suitable for reducing flood risk using Natural Flood Management or land use management and land use change within the Environmental Land Management pilot schemes. This map has been produced to assist the prioritisation of Natural Flood Management or land use / land management changes with the aim of slowing flows to reduce the risk of fluvial and surface water flooding. It has been specifically created to contribute to the spatial prioritisation of catchments within the pilot Local Nature Recovery and Landscape Recovery land management schemes for NFM interventions, but also within the other grant awarding schemes such as the England Woodland Creation scheme and the England Peatland restoration scheme. The types of interventions relevant to this spatial prioritisation include changes to vegetation cover, farming practices, small scale structures to store water or small scale re-naturalisation of streams and ditches, or other interventions that work with natural processes to slow flows of water within watercourses or overland flow. The prioritisation map aims to identify catchments where these "slow the flow" type NFM measures, or other associated land use or land management changes, will be most effective in reducing flood risk and will maximise the number of properties protected. The prioritisation has not been developed to inform other Flood Risk Management schemes or interventions (non NFM interventions). Attribution statement: © Environment Agency copyright and/or database right 2021. All rights reserved.
dataset
protocol: http
name: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-FGDB.zip
description: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-FGDB.zip download on Defra Data Services Platform
protocol: http
name: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-GeoJSON.zip
description: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-GeoJSON.zip download on Defra Data Services Platform
protocol: http
name: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-GML.zip
description: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-GML.zip download on Defra Data Services Platform
protocol: http
name: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-KML.zip
description: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-KML.zip download on Defra Data Services Platform
protocol: http
name: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-MID_MIF.zip
description: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-MID_MIF.zip download on Defra Data Services Platform
protocol: http
name: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-SHP.zip
description: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-SHP.zip download on Defra Data Services Platform
protocol: http
name: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-TAB.zip
description: SpatialPrioritisationOfCatchmentsSuitableForUsingNaturalFloodManagement-TAB.zip download on Defra Data Services Platform
https://environment.data.gov.uk/explore/793f7e63-0c3e-49cd-808f-9f77e55382d2?download=true
protocol: http
name: Spatial_prioritisation_of_catchments_suitable_for_using_Natural_Flood_Management_download
description: Download data by area of interest
protocol: http
name: Spatial_prioritisation_of_catchments_suitable_for_using_Natural_Flood_Management_WMS
description: Spatial prioritisation of catchments suitable for using Natural Flood Management WMS
protocol: http
name: Spatial_prioritisation_of_catchments_suitable_for_using_Natural_Flood_Management_WFS
description: Spatial prioritisation of catchments suitable for using Natural Flood Management WFS
793f7e63-0c3e-49cd-808f-9f77e55382d2_resource
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
Environmental Land Management
NBS
NFM
Natural Flood Management
Nature based solutions
Peatland restoration
Slow the flow
Woodland creation
Working with natural processes
environment
-6.236
2.072
55.816
49.943
2021-02-26
2026-12-31
creation
2021-02-26
revision
2021-11-10
asNeeded
The spatial prioritisation focuses on identifying catchments where there are properties at High & Medium flood risk as identified by the National Flood Risk Assessment. The following analysis of data was undertaken for all Water Framework Directive water bodies within each Environment Agency Area. 1. The number of residential & non-residential properties at High (1:30) & Medium (1:30 -1:100) levels of flood risk from fluvial/surface waters were identified in all current Water Framework Directive water bodies. This highlights where the public benefits can be achieved, i.e. where there is people and property at risk of flooding which could be reduced or managed by NFM. 2. The next step was to identify the total catchment area of agricultural and non-agricultural rural land (woodland etc) within every WFD WB and also in the catchments upstream of that WB. This identifies those smaller catchments with a significant area of agricultural land which could be utilised to reduce the risk of flooding. It also excludes urban catchments with large number of properties at risk of surface water flooding. 3. “Coastal Catchments” identified with no upstream areas were excluded i.e. they have been designated to focus on coastal waters and therefore properties are largely at risk of coastal flooding as opposed to fluvial flooding. Analysis of the above information enabled identification of smaller catchments with significant areas of upstream agricultural/rural land corresponding with areas with the largest numbers of people and property at high & medium risk of flooding. These have then been ranked to prioritise them. The highest ranked being the smallest catchments with the highest density of residential & non-residential properties at High/Med risk of fluvial and surface water flooding. The lowest ranked are large catchments with smaller number of properties at high and medium risk. We excluded properties at low and very low risk and also properties at risk from flooding from the sea from our analysis. Finally, we removed all water bodies with less than 50% of land identified as “Rural” to exclude water bodies primarily in urban settings. This was done as the prioritisation is primarily aimed at interventions of relevance to rural settings such as ELMs, Woodland creation and peatland restoration. The top 33% of ranked catchments have been selected for prioritisation within each Environment Agency Area, with the second third of medium priority and the lower third of low priority. Additional prioritisation catchments: Where not already identified for prioritisation through the above method the following catchments have been added to the prioritisation maps: a. Catchments participating in the Defra Natural Flood Management programme b. Catchments identified by Environment Agency Area Flood & Coastal Risk Management teams as a local priority following consultation
Open format | Shapefile (SHP)
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Environment Agency
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2024-01-02