This data set presents results testing the station keeping abilities of a tethered Seabotix vLBV300 underwater vehicle equipped with an inertial navigation system. These results are from an offshore deployment on April 20, 2016 off the coast of Newport, OR (44.678 degrees N, 124.109 degrees W). During the mission period, the sea state varied between 3 and 4, with an average significant wave height of 1.6 m. The vehicle utilizes an inertial navigation system based on a Gladiator Landmark 40 IMU coupled with a Teledyne Explorer Doppler Velocity Log to perform station keeping at a desired location and orientation.

Heritage Coasts boundaries. Heritage coasts are ‘defined’ rather than designated, so there isn’t a statutory designation process like that associated with national parks and areas of outstanding natural beauty (AONB). They were established to conserve the best stretches of undeveloped coast in England. A heritage coast is defined by agreement between the relevant maritime local authorities and Natural England. The national policy framework and objectives for heritage coasts were developed by the Countryside Commission, a predecessor of Natural England, and ratified by government.  For more information see the following links:Heritage Coasts - Definition, Purpose and Natural England's RoleNatural England's report - Review and evaluation of England's Heritage Coasts publications.naturalengland.org.uk/publication/4594438590431232?category=56001Full metadata can be viewed on data.gov.uk.

Heritage Coasts boundaries. Heritage coasts are ‘defined’ rather than designated, so there isn’t a statutory designation process like that associated with national parks and areas of outstanding natural beauty (AONB). They were established to conserve the best stretches of undeveloped coast in England. A heritage coast is defined by agreement between the relevant maritime local authorities and Natural England. The national policy framework and objectives for heritage coasts were developed by the Countryside Commission, a predecessor of Natural England, and ratified by government.  For more information see the following links:Heritage Coasts - Definition, Purpose and Natural England's RoleNatural England's report - Review and evaluation of England's Heritage Coasts publications.naturalengland.org.uk/publication/4594438590431232?category=56001Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations.These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field.Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary.The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer.Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for.As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations.These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field.Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary.The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer.Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for.As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

OverviewNatural England and the Environment Agency have collaborated to produce a seagrass layer for English waters, which aims to provide a comprehensive geospatial dataset of surveys of both current and historical spatial seagrass. The layer identifies a current seagrass extent; using the best and most recent available evidence and agreed by both organisations. These datasets have been provided by NE and the EA, as well as a number of third parties. Details of these third parties can be found in the accompanying metadata file.CaveatsThere are two genera of seagrass present in English waters: Ruppia sp. and Zostera sp. Commonly the use of ‘seagrass’ only refers to Zostera sp. (also known as Eelgrass). However, this dataset includes both Ruppia sp. and Zostera sp. If using the layer file, Ruppia sp. are identified by differing symbology. In the raw attribute data, Ruppia sp. and Zostera sp. can be distinguished using the EUNIS codes in the HAB_TYPE field. Seagrass data is only available where and when surveys have been carried out. Therefore, absence of seagrass in a specific year does not necessarily indicate that seagrass was not present, it may simply mean that no survey was completed that year. Similarly, there may be locations where seagrass is present, but has not been surveyed, and therefore is not represented in this dataset, such as the Medway Estuary. The seagrass layer only includes polygon data. There may be additional seagrass habitats which only have point data available, these are not included in the seagrass layer. Identified polygon extents may be affected by survey method. For example, a walking survey may not collect data below a certain depth, and a DDV survey from a boat may not collect data above a certain depth. A survey method field is included in the data, to ensure this can be accounted for. As data is collected from/using a variety of sources and methods the accuracy of the data varies. A data confidence field is supplied to provide an indication of confidence in the data accuracy. Confidence categories are assigned based on expert judgement and local knowledge. Some historical data has a particularly low confidence and may be assigned with a category of ‘presence only’. Polygons with this confidence should only be used to identify previous seagrass presence, they should not be used to identify previous seagrass extent.MetadataThis dataset contains a collation of current and historic seagrass data by Natural England and the Environment Agency. This includes data collected or commissioned by Natural England, the Environment Agency, or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). The dataset identifies a current extent of seagrass which used the best available evidence and has been agreed by both Natural England and the Environment Agency. Before carrying out any analyses using this layer, the associated README file, which provides a list of dataset caveats, should be read. Seagrass beds are an important resource for both carbon storage and biodiversity. They are a designated feature in a number of Marine Protected Areas, used to inform ecological assessment as part of the Water Framework Directive, and are the focus of habitat restoration schemes such as the LIFE Recreation ReMEDIES project.This dataset contains records that qualify as open and therefore can be published under the Open Government Licence (OGL). These records are extracted and collated from the Environment Agency Seagrass Database and Natural England Marine Evidence Base (MEB), is a collated database of both NE and 3rd party surveys. All non-seagrass habitats are excluded from the Seagrass Layer, and datasets are clipped to English waters only. The Environment Agency WFD Areas dataset is used identify which area each seagrass bed lies within. Extraction of data from the NE Marine Evidence Base is based on the dataset identifier, access limitations and data owner as defined within the Marine Metadatabase to ensure that only open datasets are included in the open version. A full list of the survey datasets used in the production of this dataset can be found in the Survey Metadata sheet included with the download.Attribution Statement: © Natural England © Environment Agency. Contains Ordnance Survey data © Crown copyright and database right 2022 Contains data from © Joint Nature Conservation Committee © North Eastern Inshore Fisheries & Conservation Authority 2017 © Yorkshire Wildlife Trust © Cornwall County Council © Harwich Haven Authority.The MAGiC version also includes data not included in the download file from © Hampshire and Isle of Wight Wildlife. Full metadata can be viewed on data.gov.uk.

Littoral drift, or shore drift, is the process by which beach sediment is moved along the shoreline. Drift results primarily from the oblique approach of wind-generated waves and can therefore change in response to short-term (daily, weekly, or seasonally) shifts in wind direction. Over the long term, however, many shorelines exhibit a single direction of net shore drift. Net shore-drift is determined through geomorphologic analysis of beach sediment patterns and of coastal landforms. Many shorelines can be divided into discrete littoral, or drift, cells, which are independent of one another and for which distinct sediment sources and sinks can be identified. This coverage denotes the extent of individual littoral cells and the direction of net shore-drift within each.

Washington marine (saltwater) shorelines including Puget Sound, Hood Canal, the Strait of Juan de Fuca, and the Pacific coastline. Also includes those portions of Washington's marine shorelines that are designated "Shorelines of State-wide Significance" by the Shoreline Management Act, Chapter 90.58. Nisqually Delta area updated May 2016 to reflect post dike removal.

The Shoreline Public Access Project is a geographic information systems (GIS) project to identify the location, length, and degree of public access to Washington State's marine shoreline. Before the project, it was unknown how much of Washington's 3066 miles of shoreline was public. The information was scattered throughout various government agencies and the data quality was variable. Through the Shoreline Public Access Project, the best available information has been summarized into a single data set, used to answer questions about our shoreline's ownership and public accessibility.For more information, contact Christina Kellum, Washington State Department of Ecology GIS Manager, gis@ecy.wa.gov.

The digital maps presented here were originally published as hard copy maps in the Coastal Zone Atlas of Washington between 1978 and 1980. Although the Atlas has been out of print for many years, the maps contain information that remain the basis for local planning decisions. After receiving multiple requests for electronic versions of portions of the Atlas, an effort was made to scan, georeference and digitize aspects of the Atlas, beginning with the slope stability maps. These maps indicate the relative stability of coastal slopes as interpreted by geologists based on aerial photographs, geological mapping, topography, and field observations. Such methods are standard, but may occasionally result in some unstable areas being overlooked and in some stable areas being incorrectly identified as unstable. Further inaccuracies are introduced to the data through the process of converting the published maps into digital format. Important land use or building decisions should always be based on detailed geotechnical investigations. This mapping represents conditions observed in the early and mid-1970s. Shorelines and steep slopes are dynamic areas and many landslides have occurred since that time that are not reflected on these maps. Subsequent human activities may have increased or decreased the stability of some areas.

Vector point data representing Rhode Island storm surge heights resulting from Superstorm Sandy in October of 2012. This information provides insight into the extent of surge height during the storm, and may be useful in predicting how similar storms will affect the Rhode Island coastline during future storm events. These data may also be used as a comparison tool in conjunction with tidal data such as Mean High High Water (MHHW). Represent locations of the inland storm surge extents during the duration of Superstorm Sandy in Rhode Island over October 29th and 30th 2012.

The locations show the approximate location of shoreline oblique photo points along the inner and outer Washington Coast, the Columbia and Snake Rivers, and large freshwater lakes. The points represent the location of the airplane as recorded by an onboard GPS unit at the time the photographs were taken during the summer months of 2006.For more information, contact Christina Kellum, Washington State Department of Ecology GIS Manager, gis@ecy.wa.gov.