Internal Drainage Districts (IDD)
Drainage districts are typically found in low-Iying land where boundaries are determined by physical, not, political attributes. Districts vary in nature and size, from the mainly agricultural (such as Conwy, Llanfrothen and Towyn) to the semi-urban (such as the Gwent Levels). Drainage districts are at risk from various sources of flooding. Without flood risk and water level management, drainage districts would be unsuitable to live in and would not protect and provide for the variety of agricultural land, utilities and transport networks that have developed within their boundaries. This dataset shows the location of the boundaries of IDD's within Wales including the maintained watercourses, tidal flaps, pumping stations and for for Caldicot & Wentlooge Levels & Lower Wye and Powysland it also shows locations of sluices. Current Drainage Districts as of 2022: Afon Ganol Ardudwy Marsh Borth Bog Caldicot & Wentlooge Levels & Lower Wye (Gwent Levels) Dysynni Valley Glaslyn - Pensyflog Harlech & Maentwrog Llanfrothen Malltraeth Marsh Mawddach & Wnion Powysland River Conwy Towyn
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS125437
- Metadata Language
- English
- Lineage
-
North IDDs – Digitised from old paper maps dating back to the Gwynedd River Authority days South IDDs - Digitised from old paper maps
- Dataset Reference Date (Publication)
- 2023-01-17
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Vertical Extent
- Medin Extent Keyword
Distribution
Distribution
- Format Type and Description
-
-
Geographic Information System
()
- Specification
-
ESRI Feature Class
-
Geographic Information System
()
- Resource Locator
-
View and Download
World Wide Web page
- Resource Locator
-
View Service
World Wide Web page
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
North IDDs – Digitised from old paper maps dating back to the Gwynedd River Authority days South IDDs - Digitised from old paper maps
Keywords
Keywords
-
NRW Thesaurus
-
- flood defence
- drainage
- Type
- Theme
Citation
- Date (Publication)
- 2024-04-09
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for intended purpose.
Attribution Statement
- Other constraints
- Open Government Licence (OGL)
Licence
- Other constraints
- Open Government Licence (OGL)
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313235343337 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-30T15:37:34.183Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0