Waterbody Catchment
The catchment associated with a unit of surface water that is the whole (or part) of a stream, river or canal, lake or reservoir, estuary, or stretch of coastal water. This is the detailed level of catchment published by authoritative bodies for the implementation of the Water Framework Directive.
The Water Framework Directive (WFD) provides a framework for assessing and managing the water environment in the European Union (EU). Since leaving the EU, the WFD has been replaced in England and Wales by the 'Water Environment (Water Framework Directive) (England and Wales) Regulations 2017'. In Scotland, the WFD was transposed into Scottish legislation by the 'Water Environment and Water Services (Scotland) Act 2003'.
Temporal filtering
The earliest date on which you can request a one-off snapshot of a date in the past for data in this feature type is 28 March 2023.
Annual Full Supply option
Please note that if you select Annual Full Supply with an initial supply date of 01 Jan 2023 as the update frequency for a data package containing this feature type in OS Select+Build, this will result in you receiving an empty data package. This is because the data for this feature type was only made available in the OS NGD from 28 March 2023. The Full Annual Supply option for data from this feature type will become available from 01 January 2024.
Feature type attributes
The following sub-sections provide details about the attributes included with this feature type, their data types in the different output formats, and other important metadata about them.
osid
The primary identifier for the feature. The OSID is a Globally Unique Identifier (GUID) and requires no centralised authority to ensure uniqueness. Note that the same OSID can occur in more than one feature type when a single feature is represented multiple times in the OS NGD.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 36
OS Select+Build Filterable: No
Data Schema Version: 1.0
versiondate
The date when the version was last updated.
Data Types: String (GeoJSON), Date (GPKG), Date (CSV)
Nullable: false
OS Select+Build Filterable: No
Data Schema Version: 1.0
versionavailablefromdate
The date this version of the feature became the latest version.
Data Types: String (GeoJSON), DateTime (GPKG), DateTime (CSV)
Nullable: false
OS Select+Build Filterable: No
Data Schema Version: 1.0
versionavailabletodate
The date this version of the feature was superseded by an update or ceased to exist.
Data Types: String (GeoJSON), DateTime (GPKG), DateTime (CSV)
Nullable: true
OS Select+Build Filterable: No
Data Schema Version: 1.0
changetype
The type of change that generated a new version of the feature.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: changetypevalue
Max Length: 50
OS Select+Build Filterable: No
Data Schema Version: 1.0
geometry_area_m2
The measured area of the geometry in square metres.
Data Types: Number (GeoJSON), Float (GPKG), Real (CSV)
Nullable: false
Precision: 15
Scale: 3
OS Select+Build Filterable: No
Data Schema Version: 1.0
geometry_source
The source organisation that provided the data.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Max Length: 85
OS Select+Build Filterable: No
Data Schema Version: 1.0
theme
The OS NGD theme to which this feature belongs.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: themevalue
Max Length: 40
OS Select+Build Filterable: No
Data Schema Version: 1.0
description
A single descriptive value intended for a quick understanding of what the feature represents.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: waterbodycatchmentdescriptionvalue
Max Length: 20
OS Select+Build Filterable: No
Data Schema Version: 1.0
waterbodyid
The ID classification of waterbodies.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 15
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
waterbodycategory
An indicator of the nature of a Waterbody Catchment.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: waterbodycategoryvalue
Max Length: 5
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
waterbodyname_text
The name of the waterbody which the feature is part of.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 254
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
waterbodyname_source
The third-party authoritative body who provided the data.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: true
Max Length: 85
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
riverbasindistrict_id
A reference to the identifier of the River Basin District Catchment within which a Waterbody Catchment is located.
Data Types: Integer (GeoJSON), Integer (GPKG), Integer (CSV)
Nullable: false
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
riverbasindistrict_name
A reference to the name of the River Basin District Catchment within which a Waterbody Catchment is located.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Max Length: 15
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
incountry
The country in which the Waterbody Catchment is primarily or wholly contained. The expected values are England, Wales, and Scotland.
Data Types: String (GeoJSON), String (GPKG), String (CSV)
Nullable: false
Code List Name: countryvalue
Max Length: 10
OS Select+Build Filterable: Yes
Data Schema Version: 1.0
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