Marine_Scotland_FishDAC_12461 eng dataset Scottish Government (Marine Scotland) +44 (0)300 244 4000 marinescotland@gov.scot pointOfContact 2025-11-06 MEDIN Discovery Metadata Version 2.3.7 urn:ogc:def:crs:EPSG::27700 OGP Area Management - Salmon Stock Assessment Areas Conservation of Salmon (Scotland) Regulations Stock Assessment Areas 2023-04-28 publication Marine_Scotland_FishDAC_12461 Salmon Stock Assessment Areas boundaries, used by Scottish Government to demarcate rivers where salmon stocks are assessed under the Salmon Conservation (Scotland) Regulations 2016. The regulations are amended annually to introduce measures for protecting stocks. Assessment Areas are also used for reporting annual statistics obtained from salmon catch returns made by the owners/occupiers/agents of salmon fisheries. Assessment Areas boundaries are based on Scottish Environment Protection Agency (SEPA) river catchments and licensed Centre for Ecology and Hydrology (CEH) 1:50,000 data. For 17 salmon Special Areas of Conservation (SAC) the Assessment Areas boundaries include information from Scottish Natural Heritage (SNH) (now NatureScot) and the Joint Nature Conservation Committee (JNCC). Assessment Areas boundaries are a subset of Scottish river catchments, where Marine Scotland has sufficient information on salmon stocks in rivers, or groups of rivers, that their status can be assessed annually and graded for the subsequent fishing season. Assessment Areas boundaries were updated in 2019 and and remained unchanged until the assessment for the 2025 season. Three assessment areas were removed due to lack of salmon fishing data, reducing the total number of areas from 215 to 212. Attributes include annual grade values from 2018 onwards. Salmon Stock Assessment Areas are available to view as a layer on the Marine Directorate Open Data Network – see marine.gov.scot pages for Salmon and Sea Trout Fishing at https://marine.gov.scot/themes/salmon-sea-trout-fishing. Boundaries were re-projected from British National Grid (BNG) to WGS84 Web Mercator before upload to NMPi. As the layer was derived by the Scottish Government from a licensed dataset, it is not downloadable or routinely available. It can be shared on request if the user provides evidence that they hold a licence from the Centre for Ecology and Hydrology (CEH) for the 1:50,000 Digital Terrain Model (DTM). Information on river grades for salmon fishing can be found at: https://www.gov.scot/publications/salmon-fishing-final-river-gradings/ Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot pointOfContact Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot custodian Scottish Government (Marine Scotland) +44 (0)300 244 4000 Mailpoint 11, Area 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot distributor Marine Scotland +44 (0)300 244 4000 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot originator Centre for Ecology and Hydrology (CEH) enquiries@ceh.ac.uk originator Joint Nature Convervation Committee (JNCC) +44 (0) 1733 562 626 Monkstone House, City Road Peterborough PE1 1JY United Kingdom comment@jncc.gov.uk  originator Scottish Environment Protection Agency (SEPA) Inverdee  FFMarineScience@sepa.org.uk originator Scottish Natural Heritage (SNH) Leachkin Road Inverness IV3 8NW United Kingdom enquiries@snh.gov.uk originator Marine Scotland +44 (0)300 244 4000 1B South, Victoria Quay Edinburgh EH6 6QQ United Kingdom marinescotland@gov.scot originator unknown Marine Environmental Data and Information Network Administrative units SeaDataNet Parameter Discovery Vocabulary 2018-12-12 revision Fisheries SeaDataNet Agreed Parameter Groups 2017-05-03 revision Area management/restriction/regulation zones and reporting units GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Derived from licensed and OGL data otherRestrictions public access limited according to Article 13(1)(e) of the INSPIRE Directive 500.00 eng boundaries environment -8.837017 -0.5226393 54.5331 60.96097 SeaDataNet vertical extent keywords 2010-01-01 revision There is no appropriate value 2016-03-23 2026-01-30 https://msmap1.atkinsgeospatial.com/geoserver/nmpwms/wms?service=wms&version=1.3.0&request=GetCapabilities offlineAccess https://msmap1.atkinsgeospatial.com/geoserver/nmpwms/wms?service=wms&version=1.3.0&request=GetCapabilities download dataset Salmon Stock Assessment Areas boundaries were derived by Scottish Government from 1:50,000 river catchment boundaries which were created by the Scottish Environment Protection Agency (SEPA) from the Institute of Hydrology (now the Centre for Environment and Hydrology (CEH)) 1:50,000 Digital Terrain Model (DTM) data. Assessment Areas boundaries were created as a subset of Scottish river catchments with coastal outflow locations at Normal Tide Limit (NTL). For 17 salmon Special Areas of Conservation (SACs), outflow locations were adjusted to match SAC boundaries from Scottish Natural Heritage (SNH) (now NatureScot) and for the River Tweed SAC, in part from the Joint Nature Conservation Committee (JNCC). The 1:50,000 scale of Salmon Stock Assessment Areas boundaries means that they are suitable for mapping but may not be sufficiently accurate to produce exact selections from, or overlaps with, other datasets. Maps containing Salmon Stock Assessment Areas boundaries require Crown copyright and acknowledgement of SEPA and CEH, while data from NatureScot and JNCC require an Open Government Licence statement: 'Assessment Areas boundaries derived from the Scottish Environment Protection Agency (SEPA) 1:50,000 river catchment data, based on digital spatial data licensed from the Centre for Ecology and Hydrology, © NERC (CEH)' (preceded if appropriate by 'Some features of this map are'); and 'Contains Ordnance Survey data © Crown copyright and database right [year]'; and ‘Contains public sector information licensed under the Open Government Licence v3.0’