Groundwater Vulnerability (2018)
Groundwater vulnerability maps reflect improvements in data mapping and understanding of the factors affecting vulnerability. The maps show the vulnerability of groundwater at a location based on the hydrological, geological, hydrogeological and soil properties within a 1 kilometre square grid. The maps provide a separate assessment of the vulnerability of groundwater in overlying 'superficial', rocks, and those that comprise the underlying 'bedrock'. The main aim of the maps is as a high level screening tool to give NRW, planners, consultants and other users an indication of whether a proposed development or activity is likely to be acceptable (e.g. located in an area of low vulnerability or over unproductive strata) or of potential concern (e.g. located in an area of high vulnerability). The maps can also be used to inform and target environmental management and incident response so that preventative and/or remedial actions can be taken as early as possible to protect groundwater. Two main rock types are recognised: - Superficial (drift): permeable unconsolidated (loose) deposits, such as sands and gravels. - Bedrock: solid permeable formations such as sandstone, chalk and limestone. The vulnerability of these two rock types may differ due to their structure and location. Where both types are present, the maps display the most vulnerable category of the two.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS120494
- Teitl Amgen
-
- Simplified Groundwater Vulnerability
- Combined Groundwater Vulnerability
- Laith Metadata
- English
- Datganiad
-
For the first time the maps provide a separate assessment of the vulnerability of groundwater in overlying (or 'superficial') rocks and those that comprise the underlying 'bedrock'. Previously only bedrock was assessed. Some rock types have been reclassified from non-aquifers to secondary aquifers in recognition of their importance for local water supplies and baseflow to rivers. The maps identify areas where solution features that enable rapid movement of a contaminant may be present and show where NRW hold local information that would affect vulnerability in that area. These changes have resulted in an increase in the area of land that is considered to require protection and an increase in the area that is more vulnerable.
- Gwybodaeth ychwanegol
-
The aquifer designation data used in the new maps is based on geological mapping provided by the British Geological Survey. The maps also include Soil Map data licensed from Cranfield University.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2021-07-07
Ystod amser
- Dyddiad cychwyn
- 2018-01-01
- Dyddiad gorffen
- 2018-02-01
- Categori pwnc
-
- Geoscientific information
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
()
- Math
-
ArcMap feature class
-
Geographic Information System
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
For the first time the maps provide a separate assessment of the vulnerability of groundwater in overlying (or 'superficial') rocks and those that comprise the underlying 'bedrock'. Previously only bedrock was assessed. Some rock types have been reclassified from non-aquifers to secondary aquifers in recognition of their importance for local water supplies and baseflow to rivers. The maps identify areas where solution features that enable rapid movement of a contaminant may be present and show where NRW hold local information that would affect vulnerability in that area. These changes have resulted in an increase in the area of land that is considered to require protection and an increase in the area that is more vulnerable.
Allweddeiriau
Allweddair
Allweddair
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
This data is jointly owned by NRW and BGS There are no access restrictions on this data. However, there are third party use restrictions.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
NRW does NOT grant permission to third parties to re-use or disseminate this dataset. In some cases the dataset maybe made available for non-commercial purposes . For commercial use please contact the British Geological Survey.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313230343934 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-30T14:08:36.955Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0