Restoring the Afon Teifi at Cors Caron National Nature Reserve
Adfer Afon Teifi yng Ngwarchodfa Natur Genedlaethol Cors Caron

  • English
  • wel
  • All

The Afon Teifi is one of the largest rivers in Wales, and is of considerable national and international importance; designated as a Special Area of Conservation (SAC) and a Site of Special Scientific Interest (SSSI). Approximately 15km from its source, the Teifi runs through the Cors Caron National Nature Reserve (NNR). Within the NNR approximately 1.5km of the Afon Teifi has been altered by straightening and deepening of the river. The northernmost straightening is present on Ordnance Survey maps dating from 1889 whilst the remaining alterations were undertaken in the period 1891 to 1905. The present day aerial photographs show the original meandering channel as sections of open water or vegetated channel. The presence of the original channel has lead to a proposal to restore the river to its former course. A scoping study by the River Restoration Centre has indicated that restoration is a viable option for the Afon Teifi within the NNR. The scheme proposed by former Countryside Council for Wales (CCW) incorporated an environmental assessment, stakeholder consultation, pre- and post-project monitoring programmes and technical design. This dataset contains the results of the work undertaken to address the scheme's requirements (Assessment of the current baseline information relating to the existing river morphology and hydrology, the in-channel vegetation and invertebrate fauna, the floodplain and the stakeholder interest). It includes an environmental impact assessment of the proposed restoration and presents a detailed plan of work for the restoration of the Afon Teifi in the NNR with guidance for further research and monitoring.

Identification

Dynodydd
Identifier
NRW_DS109994
Teitl Amgen
Alternative Title
Laith Metadata
Metadata Language
English
Lineage

Levels survey - A total station with an up to date calibration certificate was deployed on site during November 2004. Temporary wooden benchmarks placed approximately every 100m on the downstream left-hand bank of the current river channel and the old channel to be restored. A permanent benchmark established at the large footbridge downstream of the restoration site. The profile of the current channel, Sections A-D of the original channel, and approximately 10m over the top of the river banks were mapped to provide elevation data along both sides of the river. Sediment cores - For sections of the river to be restored the former river bed profile and depth was determined using a set of cores transverse to the course of the former channel. Cores taken at three sites to investigate the depth of the previous river bed in the old channel sections. Water quality - Water quality tested for pH and conductivity at all the sites where invertebrates were sampled. Invertebrates - Basic invertebrate survey conducted using kick and sweep sampling for two minutes over 1m2 on the channel bed and at the river bank margins. Three drift samples were taken in the main river channel where a drift net was left overnight. Six invertebrate colonisers set out in the emergent vegetation of the old channel during the same period.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2005-03-31

Temporal Extent

Begin date
1978-01-01
End date
2004-12-31
 
Categori pwnc
Topic category
  • Biota
    Biota
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Cranfield University -
Cranfield Campus, Cranfield University, Cranfield, Bedfordshire, MK43 0A, England
http://www.cranfield.ac.uk/
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword
 
 

Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Documents ( )

    Specification

    [A] Report (MS Word, pdf-format) [B] Data in spreadsheet format (MS Excel)

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
Conformity
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

Levels survey - A total station with an up to date calibration certificate was deployed on site during November 2004. Temporary wooden benchmarks placed approximately every 100m on the downstream left-hand bank of the current river channel and the old channel to be restored. A permanent benchmark established at the large footbridge downstream of the restoration site. The profile of the current channel, Sections A-D of the original channel, and approximately 10m over the top of the river banks were mapped to provide elevation data along both sides of the river. Sediment cores - For sections of the river to be restored the former river bed profile and depth was determined using a set of cores transverse to the course of the former channel. Cores taken at three sites to investigate the depth of the previous river bed in the old channel sections. Water quality - Water quality tested for pH and conductivity at all the sites where invertebrates were sampled. Invertebrates - Basic invertebrate survey conducted using kick and sweep sampling for two minutes over 1m2 on the channel bed and at the river bank margins. Three drift samples were taken in the main river channel where a drift net was left overnight. Six invertebrate colonisers set out in the emergent vegetation of the old channel during the same period.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Allweddair
Keywords

NRW Thesaurus
  • sediment sample
  • river channels
  • NNR (National Nature Reserves)
  • vegetation (see also specific types eg.coastal or heathland vegetation and vegetation surveys)
  • Cors Caron NNR
  • river restoration
  • Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
  • stakeholder consultation
  • river morphology
  • environmental assessment
  • monitoring programmes
  • scoping study
  • marine and freshwater inventory
  • river Teifi (Afon Teifi)
  • floodplains
  • restoration
  • SSSI (Sites of Special Scientific Interest)
  • invertebrates (see also specific species)
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2026-08-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

Restoring the afon Teifi at Cors Caron National Nature Reserve: a project plan
NRW Related Title

A monitoring strategy for the Afon Teifi restoration project
 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
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

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
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 the intended purpose.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313039393934 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-09-28T11:43:38.15Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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