Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey, Maine Water Science Center, Augusta, Maine Publication_Date: 2012 Title: SIR2012_5290_ACAD_Potentialbarriers Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Augusta, Maine Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sir/2012/5290/ Description: Abstract: This layer shows landforms that are potential barriers to the horizontal migration of salt marshes in and around Acadia National Park (ANP), Maine. Landforms that are potential barriers to the migration of salt marshes include roads and railroad grades in this study area. Any artificial landform that intersected land that could be inundated with a sea level rise of 60 cm (+/- the 26 cm 95-percent confidence interval used in this study) was considered a potential barrier to marsh migration. The study did not attempt to distinguish between roads that had water passage (culverts) and those that did not, because the specific elevation and size of the culvert would ultimately determine how much of a barrier any given landform would present. Purpose: Landforms that are potential barriers to the horizontal migration of salt marshes in and around Acadia National Park are potentially important in the analysis of the future viability of saltmarshes. Roads and railroad grades both may act as potential barriers. The potential barriers to migration of salt marshes in and around ANP were developed using the inundation lines for salt marshes with 60 cm of sea level rise, and a shaded-relief image of the LiDAR data on which the inundation lines were based. Aerial photographs (Low Tide orthophotos 2008, and Bing maps) were also used to delineate and identify potential barriers. The polylines are simply a graphical representation of a barrier (a road or railroad grade) that could be in the path of the rising sea. The lengths are somewhat aribtrary, and are just meant to show in general where the landform could impede water movement. Supplemental_Information: Geodatabase product of a U.S. Geological Survey study funded by National Park Service Climate Change Response funding, NPS PMIS # 161531, "Inventory and Protection of Salt Marshes from Risks of Sea Level Rise at Acadia National Park, Maine", 2012. The database layers are collectively termed "appendix 1" of the USGS SIR report. Database layers included in appendix 1 include: Surveyed benchmarks used in surveying exercise (SIR2012_5290_ACAD_SurveyedBMs); Surveyed marsh points used for quality control for LiDAR data (SIR2012_5290_ACAD_Surveyedmarshpoints); Surveyed elevation reference marks for each surveyed marsh (SIR2012_5290_ACAD_SurveyedERMs); Salt marshes inventoried for this study (SIR2012_5290_ACAD_Saltmarshpolys); Inundation lines for each marsh under 60 cm of sea level rise (SIR2012_5290_ACAD_Inundationlines); Potential barriers to migration of salt marshes (SIR2012_5290_ACAD_Potentialbarriers). The inundation lines presented are in no way a prediction of whether marsh migration will actually occur, only indications of where land will be inundated and would therefore be available for migration under 60 cm. of sea level rise. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Currentness_Reference: Data were developed based on LiDAR topographic data collected in the fall of 2010. Changes to landforms since that time are not represented. Status: Progress: Complete Maintenance_and_Update_Frequency: No maintenance or update is planned. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -68.786498 East_Bounding_Coordinate: -68.002430 North_Bounding_Coordinate: 44.574048 South_Bounding_Coordinate: 44.147056 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: elevation Theme_Keyword: coasts Theme_Keyword: environment Theme_Keyword: transportation Place: Place_Keyword_Thesaurus: None Place_Keyword: Maine Place_Keyword: Mount Desert Island Place_Keyword: Acadia National Park Place_Keyword: Penobscot Bay Place_Keyword: Schoodic Peninsula Place_Keyword: Swans Island Place_Keyword: Hancock County Place_Keyword: Knox County Access_Constraints: None. Use_Constraints: No legal use constraints. Users must assume responsibility in determining the usability of these data for their purposes. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Martha G. Nielsen Contact_Organization: U.S. Geological Survey, Maine Water Science Office Contact_Address: Address_Type: mailing and physical Address: 196 Whitten Rd. City: Augusta State_or_Province: Maine Postal_Code: 04330 Contact_Voice_Telephone: 207-622-8201 x116 Contact_Facsimile_Telephone: 207-622-8204 Contact_Electronic_Mail_Address: mnielsen@usgs.gov Data_Set_Credit: Produced in cooperation with the National Park Service. Funding provided by the National Park Service. LiDAR data for the Northeast funded largely by USGS American Reinvestment and Recovery Act funds, and provided by the Maine Office of GIS. Acknowledgment of the U.S. Geological Survey and the National Park Service would be appreciated in products derived from these data. Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.4.4000 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The potential barriers were idenditified based only on remotely-sensed data and no attempt was made to ground-truth the data. Information on the type of barrier (road or railroad grade) was gathered from aerial photos, and was checked for each entity. Information on whether the potential barrier has any association with Acadia National Park, its properties, or properties of its conservation partners was gathered from a) GIS datasets of the park boundaries, and b) conversations with Park staff and staff of conservation partners working with the park (primarily Maine Coast Heritage Trust). No warranty is made concerning these attributions. Logical_Consistency_Report: Data are internally consistent. Completeness_Report: The data are complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The locations are based on very-high resolution aerial photographs and topographic data. Locations of roadways and railroad grades is accurate to within +/- 5 meters. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Elevations not determined. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 12/1/2011 Title: LiDAR Data for the Northeast Geospatial_Data_Presentation_Form: raster tiles, 2 meter cell size, each tile is 751x751 cells in size (1.5 km x 1.5 km). Other_Citation_Details: The LiDAR data have a grid cell size of 2 m. Individual data tiles are 751x751 grid cells (1.5 km x 1.5 km) in size. As of October 2012, the LiDAR data are still availably only from state GIS offices. Final publication for public download has not been announced. Source_Scale_Denominator: 2400 Type_of_Source_Media: External hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20111001 Ending_Date: 20111230 Source_Currentness_Reference: Data are current as of 2012. Source_Citation_Abbreviation: LiDAR data Source_Contribution: The LiDAR data were used to identify location/shape of potential barriers to migration of salt marshes. A shaded-relief image of tiles that were merged together (using the ArcGIS "mosaic" tool) was used in this process. Source_Information: Source_Citation: Citation_Information: Originator: Maine Office of GIS Publication_Date: 2009 Title: Low Tide orthophotos 2008. Online_Linkage: http://geolibportal.usm.maine.edu/geonetwork/srv/en/metadata.show?id=502 Source_Scale_Denominator: 2400 Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20080821 Source_Currentness_Reference: flight date Source_Citation_Abbreviation: LT 2008 Source_Contribution: Low-tide orthophotos from 2008 were used to help identify the potential barriers to migration. They were also used to identify the type of barrier (road or railroad grade). Process_Step: Process_Description: Creation of tile mosaics of the LiDAR data for use as background images and datasets. The LiDAR data exist in small (1.5 km x 1.5 km) tiles. They were combined using the ArcGIS Mosaic tool into larger pieces at the same resolution (2 m cell size). These mosaics were used to create shaded relief images of the topography. Process_Date: 2011 Process_Step: Process_Description: Creation of shaded relief images from the LiDAR data. Large mosaicked tiles were processed to create shaded relief images of the topography. The ArcGIS hillshade tool was used to create these images with the same grid size (2 m) as the original input data. Process_Date: 2011 Process_Step: Process_Description: Once the shaded relief image of the LiDAR data was created, the inundation lines layer (insert formal title here) was plotted over the shaded relief image for each salt marsh in the salt marshes inventory polygon layer (insert formal title here). If the inundation lines showed that, absent any physical barrier, water would move inland on the other side of any roadway or other manmade topographic feature, a line was digitized representing that manmade topographic feature. This process was repeated for each salt marsh in the salt marshes inventory set of polygons. Each potential barrier line was given a "type" label, which was determined based on the aerial photos (2008 low tide photos) and the shaded relief of the LIDAR data. Process_Date: 2012 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 41 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: NAD_1983_UTM_Zone_19N Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -69.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.0001 Ordinate_Resolution: 0.0001 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D North American 1983 Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North_American_Vertical_Datum_1988 Altitude_Resolution: 1.0 Altitude_Distance_Units: Meters Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: ploylines Entity_Type_Definition: Potential barriers to saltmarsh migration Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Shape_Length Attribute_Definition: Length of features in internal units Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated Attribute: Attribute_Label: ANP_Association Attribute_Definition: Indicates the ownership of the adjacent saltmarsh Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: private Enumerated_Domain_Value_Definition: Privately held Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ANP Enumerated_Domain_Value_Definition: Owned or otherwise protected by Acadia National Park (such as by a conservation easement). Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Partner Enumerated_Domain_Value_Definition: Protected by a conservation partner of Acadia National Park Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: State Enumerated_Domain_Value_Definition: Protected by the State of Maine (Holbrook Island Sanctuary). Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Shape Attribute_Definition: Feature Geometry Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining features Attribute: Attribute_Label: Type Attribute_Definition: Type of artificial landform mapped Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: road Enumerated_Domain_Value_Definition: Barrier landform is a road, driveway, lane, etc. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: railroad grade Enumerated_Domain_Value_Definition: barrier landform is a railroad grade Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: OBJECTID Attribute_Definition: Internal feature number Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated Overview_Description: Entity_and_Attribute_Overview: The Potential Barriers to Salt Marsh Migration layer contains lines representing the physical location of manmade topographic features that may present an obstacle to the migration of a salt marsh when sea level rises 60 cm. Whether or not the feature presents an actual obstacle depends on the location and function of water passage routes such as bridges and/or culverts. The Attribute Table for this layer contains the following items: OBJECTID -- Internal feature number Shape -- Feature Geometry Type -- Type of artificial landform mapped (road or railroad grade) Shape_Length -- Length of features in internal units (meters) ANP_Association -- Indicates the ownership of the adjacent saltmarsh: "Partner" = A conservation partner of Acadua National Park (ANP) owns the land "Yes" = ANP owns the land "no" = privately held, no association with ANP Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Ask USGS -- Water Webserver Team Contact_Address: Address_Type: mailing address Address: 445 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS) Contact_Electronic_Mail_Address: http://water.usgs.gov/user_feedback_form.html Resource_Description: Downloadable Data Distribution_Liability: Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI File Geodatabase datalayer Format_Information_Content: Compressed folder File_Decompression_Technique: Winzip Transfer_Size: 31000 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sir/2012/5290/SIR2012_5290_ACAD_SaltmarshSLRLayers.gdb.zip Access_Instructions: Compressed folder of geodatabase may be downloaded at http://pubs.usgs.gov/sir/2012/5290 by following the instructions. Metadata are available for download separately, but also are included in the geodatabase folder. The geodatabase includes all the datalayers together for this report; they are not available separately. Fees: None. This dataset is provided by USGS as a public service. Metadata_Reference_Information: Metadata_Date: 20121220 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, New England Water Science Center, Maine Office Contact_Person: Martha Nielsen / Robert Dudley Contact_Position: Hydrologist Contact_Address: Address_Type: mailing address Address: 196 Whitten Rd. City: Augusta State_or_Province: ME Postal_Code: 04330 Country: USA Contact_Voice_Telephone: 207-622-8201 Contact_Electronic_Mail_Address: mnielsen@usgs.gov Contact_Electronic_Mail_Address: rwdudley@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998