Aquifer Designation
Aquifer designation consists of two datasets. These are NRW Aquifer topology superficial [Aquifer Designation Superficial Deposits] and NRW Aquifer topology bedrock [Aquifer Designation Bedrock Geology]. Aquifer designations identify the potential of the geological strata to provide water that can be abstract and have been defined through the assessment of the underlying geology. The designations are attributed directly to British Geological Society (BGS) 1:50K. Bedrock geology (formerly known as 'solid' geology by BGS) is a term used for the main mass of rocks forming the Earth and present everywhere, whether exposed at the surface in outcrops or concealed beneath superficial deposits or water. Geology less than 1.8 million years in age are referred to as Superficial Deposits. Superficial deposits are the youngest geological deposits formed during the most recent period of geological time, the Quaternary, which extends back about 1.8 million years from the present. They rest on older deposits or rocks referred to as Bedrock.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS116698
- Teitl Amgen
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- NRW Aquifer topology bedrock.LYR
- NRW Aquifer topology superficial.LYR
- NRW Aquifer topology superficial
- NRW Aquifer topology bedrock
- Aquifer Designation Map (Bedrock Geology) (AfA125)
- Aquifer Designation Map (Superficial Deposits) (AfA124)
- Laith Metadata
- English
- Datganiad
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The aquifer designations are: Principal Aquifers: geology that exhibit high irregular and/or fracture permeability. They usually provide a high level of water storage. They may support water supply and/or river base flow on a strategic scale; Secondary Aquifers A: permeable strata capable of supporting water supplies at a local rather than strategic scale and in some cases forming an important source of base flow to rivers; Secondary Aquifer B: predominantly lower permeability strata which may in part have the ability to store and yield limited amounts of groundwater by virtue of localised features such as fissures, thin permeable horizons and weathering; Secondary Undifferentiated: In cases where it has not been possible to attribute either category A or B to a rock type; Unproductive Strata: these are geological strata with low permeability that have negligible significance for water supply or river base flow. Unknown: Lakes and Landslips.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2021-07-07
Ystod amser
- Dyddiad cychwyn
- 2013-01-01
- Categori pwnc
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- Environment
- Geoscientific information
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
()
- Math
-
ESRI Feature Class
-
Geographic Information System
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
The aquifer designations are: Principal Aquifers: geology that exhibit high irregular and/or fracture permeability. They usually provide a high level of water storage. They may support water supply and/or river base flow on a strategic scale; Secondary Aquifers A: permeable strata capable of supporting water supplies at a local rather than strategic scale and in some cases forming an important source of base flow to rivers; Secondary Aquifer B: predominantly lower permeability strata which may in part have the ability to store and yield limited amounts of groundwater by virtue of localised features such as fissures, thin permeable horizons and weathering; Secondary Undifferentiated: In cases where it has not been possible to attribute either category A or B to a rock type; Unproductive Strata: these are geological strata with low permeability that have negligible significance for water supply or river base flow. Unknown: Lakes and Landslips.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2013-04-03
System Cyfeirio Gofodol
- Cod
- NONE
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
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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
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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
- 4f4c4942-4343-5764-6473-313136363938 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-30T15:37:28.516Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0