4f4c4942-4343-5764-6473-313038393437 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2024-05-31T09:15:57.691Z NRW 1.0 wel British National Grid (EPSG::27700) Hydrological Investigations to Underpin Mire Restoration Work at Cleddon Bog Site of Special Scientific Interest (SSSI), Monmouthshire, SE Wales (2006) Hydrological Investigations to Underpin Mire Restoration Work at Cleddon Bog Site of Special Scientific Interest (SSSI), Monmouthshire, SE Wales (2006) Astudiaeth hydrolegol i ategu gwaith adfer llaid yn SdDGA Cors Cleddon, Sir Fynwy, De Ddwyrain Cymru (2006) 2006-03-10 NRW_DS108947 Cleddon Bog Site of Special Scientific Interest (SSSI) is located around 9 km south of Monmouth, Monmouthshire SE Wales. The site has a valley-head mire which has developed within two connected valley-head troughs. The small catchment of which the site forms the upper reaches is a hanging valley system to the River Wye which runs north-south around 1 km to the east. There is a comprehensive body of evidence which shows that the condition of the mire feature at the site is deteriorating. Over the past few decades this has been marked by a decline in the abundance of key mire species at the expense of purple moor-grass and scrub. It is thought that the causes of this deterioration include drying of the mire surface, cause by catchment afforestation and a range of peripheral and internal drainage measures, coupled with the cessation of historical management practices such as grazing and burning. This dataset was collected to assess the current hydrological regime of the site and provide specific detailed recommendations to support a future programme of hydrological restoration. The objectives of this project were to: - Develop an initial conceptual understanding of the principle water supply mechanisms to the site, with particular reference to valley-flank communities influence by lateral seepage. - Based on the initial conceptual model, undertake a limited programme of field investigation to secure a better understanding of water flow pathways into and within the site. - Identify a range of hydrological restoration options for the site. Cleddon Bog Site of Special Scientific Interest (SSSI) is located around 9 km south of Monmouth, Monmouthshire SE Wales. The site has a valley-head mire which has developed within two connected valley-head troughs. The small catchment of which the site forms the upper reaches is a hanging valley system to the River Wye which runs north-south around 1 km to the east. There is a comprehensive body of evidence which shows that the condition of the mire feature at the site is deteriorating. Over the past few decades this has been marked by a decline in the abundance of key mire species at the expense of purple moor-grass and scrub. It is thought that the causes of this deterioration include drying of the mire surface, cause by catchment afforestation and a range of peripheral and internal drainage measures, coupled with the cessation of historical management practices such as grazing and burning. This dataset was collected to assess the current hydrological regime of the site and provide specific detailed recommendations to support a future programme of hydrological restoration. The objectives of this project were to: - Develop an initial conceptual understanding of the principle water supply mechanisms to the site, with particular reference to valley-flank communities influence by lateral seepage. - Based on the initial conceptual model, undertake a limited programme of field investigation to secure a better understanding of water flow pathways into and within the site. - Identify a range of hydrological restoration options for the site. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Countryside Council for Wales (CCW) Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Protected sites Hydrography Protected sites GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Cleddon Bog SSSI mires hydrochemistry NRW Thesaurus NRW Thesaurus 2023-12-31 geonetwork.thesaurus.local.theme.converted_nrw-keywords hydrology Integrated Public Sector Vocabulary Integrated Public Sector Vocabulary 2013-04-03 geonetwork.thesaurus.external.theme.subjects There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations © 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. English environment SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 SIR FYNWY - MONMOUTHSHIRE -2.71798316 -2.70203249 51.73691316 51.72840078 2005-11-07 2006-03-10 Hydrological investigations to underpin mire restoration work at Cleddon Bog SSSI Monmouthshire south east Wales Documents [A] Data Held in Report (Ffynnon Reference DCT-09-011958) [B] Maps, photos, graphs and 3D images all available within the report 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 2010-12-08 false Project Tasks included: An extensive hand-auger survey of shallow geological deposits and water levels within the site. The survey positions and related information were levelled to a local site datum through a separate levelling survey. - A hydrological feature and hydro-chemical survey of the site, complemented by photo-documentation. - Analysis and interpretation of a long-term groundwater level dataset. - Detailed consideration of the influences on site wetness including: 1) quantitative consideration of the date of rainfall under various catchment land-use scenarios, 2) consideration of the influence of peripheral hydrological management features (e.g. drains), and 3) consideration of the hydrological properties of the bog vegetation. - Integration and interpretation of the information to develop and unified conceptual understanding of the hydrology of the site, leading to recommendations on future hydrological management. Project Tasks included: An extensive hand-auger survey of shallow geological deposits and water levels within the site. The survey positions and related information were levelled to a local site datum through a separate levelling survey. - A hydrological feature and hydro-chemical survey of the site, complemented by photo-documentation. - Analysis and interpretation of a long-term groundwater level dataset. - Detailed consideration of the influences on site wetness including: 1) quantitative consideration of the date of rainfall under various catchment land-use scenarios, 2) consideration of the influence of peripheral hydrological management features (e.g. drains), and 3) consideration of the hydrological properties of the bog vegetation. - Integration and interpretation of the information to develop and unified conceptual understanding of the hydrology of the site, leading to recommendations on future hydrological management.