4f4c4942-4343-5764-6473-313135323934 English NRW_DS110194 Master Reference Data Team Natural Resources Wales, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ 2026-09-29T11:19:25.647Z NRW 1.0 wel utf8 British National Grid (EPSG::27700) SAC Monitoring: Shad Egg Survey River Usk and River Wye (2012) SAC Monitoring: Shad Egg Survey River Usk and River Wye (2012) Arolwg o Wyau Herlynod a Gwangod Afon Wysg ac Afon Gwy (2012) 2013-06-30 NRW_DS115294 http://naturalresources.wales/ The Rivers Usk and Wye are designated as Special Areas of Conservation (SACs) under the EC Habitats Directive (92/43/EEC) for several qualifying features, including twaite shad (Alosa fallax) and allis shad (Alosa alosa). Shad are migratory members of the Clupeidae (herring) family that ascend rivers to spawn in late spring. Populations of both species are threatened across Europe, primarily due to barriers to migration and issues relating to water quality. In the UK, significant populations of shad spawn in the Rivers Severn, Usk, Wye, and Tywi. The Rivers Usk and Wye have been designated as SACs for shad and other qualifying features, including salmon, lamprey species, and bullhead. The purpose of this data capture was to support the assessment of favourable conservation status within the Usk and Wye catchments and to supplement the primary shad spawning distribution condition assessments for these rivers. Previous surveys were carried out on the River Usk in 2010 and 2011, and on the River Wye in 2011. Seven sites were selected along the River Usk and 10 sites along the River Wye. Both surveys were conducted between periods of high river flow, and all fieldwork was undertaken by qualified Countryside Council for Wales (CCW) monitoring staff. Confidence in this dataset is therefore considered to be high. The Rivers Usk and Wye are designated as Special Areas of Conservation (SACs) under the EC Habitats Directive (92/43/EEC) for several qualifying features, including twaite shad (Alosa fallax) and allis shad (Alosa alosa). Shad are migratory members of the Clupeidae (herring) family that ascend rivers to spawn in late spring. Populations of both species are threatened across Europe, primarily due to barriers to migration and issues relating to water quality. In the UK, significant populations of shad spawn in the Rivers Severn, Usk, Wye, and Tywi. The Rivers Usk and Wye have been designated as SACs for shad and other qualifying features, including salmon, lamprey species, and bullhead. The purpose of this data capture was to support the assessment of favourable conservation status within the Usk and Wye catchments and to supplement the primary shad spawning distribution condition assessments for these rivers. Previous surveys were carried out on the River Usk in 2010 and 2011, and on the River Wye in 2011. Seven sites were selected along the River Usk and 10 sites along the River Wye. Both surveys were conducted between periods of high river flow, and all fieldwork was undertaken by qualified Countryside Council for Wales (CCW) monitoring staff. Confidence in this dataset is therefore considered to be high. 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 Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme alosa fallax Shad River Usk twaite shad allis shad Special Areas of Conservation (SAC) - SAC monitoring alosa alosa NRW Thesaurus 2026-08-27 geonetwork.thesaurus.local.theme.converted_nrw-keywords There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW 2012. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. English biota environment inlandWaters SeaVoX Vertical Co-ordinate Coverages 2021-01-06 SIR FYNWY - MONMOUTHSHIRE POWYS - POWYS -3.5955239 -2.66343477 51.65203737 52.17522631 2012-03-15 2012-05-30 River Usk and River Wye shad egg survey 2012 River Usk shad egg survey 2010 River Usk shad egg survey 2011 River Wye shad egg survey 2011 Documents Unknown Final report held in Microsoft Word and Adobe PDF formats. Image Unknown Survey photographs and associated images held in JPEG format. Delimited Unknown Raw survey data workbook held in Microsoft Excel format. Database Unknown Species data held in Recorder 6 under reference CCW000800000000Q. Geographic Information System Unknown GIS layers held in MapInfo TAB format. Text or Plaintext Unknown Field notes held in paper and PDF formats. 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 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false The Rivers Usk and Wye are designated as Special Areas of Conservation (SACs) under the EC Habitats Directive (92/43/EEC) for several qualifying features, including twaite shad (Alosa fallax) and allis shad (Alosa alosa). Shad are migratory members of the Clupeidae (herring) family that ascend rivers to spawn in late spring. Populations of both species are threatened across Europe, primarily due to barriers to migration and issues relating to water quality. In the UK, significant populations of shad spawn in the Rivers Severn, Usk, Wye, and Tywi. The Rivers Usk and Wye have been designated as SACs for shad and other qualifying features, including salmon, lamprey species, and bullhead. The purpose of this data capture was to support the assessment of favourable conservation status within the Usk and Wye catchments and to supplement the primary shad spawning distribution condition assessments for these rivers. Previous surveys were carried out on the River Usk in 2010 and 2011, and on the River Wye in 2011. Seven sites were selected along the River Usk and 10 sites along the River Wye. Both surveys were conducted between periods of high river flow, and all fieldwork was undertaken by qualified Countryside Council for Wales (CCW) monitoring staff. Confidence in this dataset is therefore considered to be high. The Rivers Usk and Wye are designated as Special Areas of Conservation (SACs) under the EC Habitats Directive (92/43/EEC) for several qualifying features, including twaite shad (Alosa fallax) and allis shad (Alosa alosa). Shad are migratory members of the Clupeidae (herring) family that ascend rivers to spawn in late spring. Populations of both species are threatened across Europe, primarily due to barriers to migration and issues relating to water quality. In the UK, significant populations of shad spawn in the Rivers Severn, Usk, Wye, and Tywi. The Rivers Usk and Wye have been designated as SACs for shad and other qualifying features, including salmon, lamprey species, and bullhead. The purpose of this data capture was to support the assessment of favourable conservation status within the Usk and Wye catchments and to supplement the primary shad spawning distribution condition assessments for these rivers. Previous surveys were carried out on the River Usk in 2010 and 2011, and on the River Wye in 2011. Seven sites were selected along the River Usk and 10 sites along the River Wye. Both surveys were conducted between periods of high river flow, and all fieldwork was undertaken by qualified Countryside Council for Wales (CCW) monitoring staff. Confidence in this dataset is therefore considered to be high.