{"@type": "dcat:Dataset", "accessLevel": "public", "contactPoint": {"@type": "vcard:Contact", "fn": "SeattleData", "hasEmail": "mailto:mapgis.mapgis@seattle.gov"}, "description": "<p></p><p><span style='background-color:rgb(255, 255, 255);'><font color='#000020' size='2'><span style='font-family:Verdana, sans-serif;'>The shoreline essentially follows the 8 foot contour line, except where the\northo offered further clarification. That 8 foot contour line matches closest\nto what NAVD88 shows as &quot;mean high water&quot; (see official definition\nbelow) at 7.97 feet. MEAN HIGH WATER (MHW): &quot;A tidal datum. The average of\nall the high water heights observed over the National Tidal Datum Epoch. For\nstations with shorter series, simultaneous observational comparisons are made\nwith a control tide station in order to derive the equivalent datum of the\nNational Tidal Datum Epoch.&quot;\u00a0</span><a href='https://tidesandcurrents.noaa.gov/datum_options.html' target='_blank' rel='nofollow ugc noopener noreferrer'>Source</a><span style='font-family:Verdana, sans-serif;'>\u00a0\u00a0&quot;The MHW line along the tidal shoreline is represented by the contour line\nthat is 8.0' above the NAVD 88. The MHW elevation is not necessarily an\nequipotential (level) surface, but the variation from a level surface is not\nsignificant for this project. The determination of MHW is based on 18 yrs of\ntidal data and represents the latest official National Tidal Epoch of\n1960-1978. The Seattle Tide Station (Sta No 944-7130) is located at the\ndowntown ferry terminal.&quot; Source: From paper by Nick Bodnar 10/18/1993\nSome other definitions regarding these shorelines (from Nick Bodnar,\n10/18/1993): LAKES UNION AND WASHINGTON SHORELINE (18.6' above NAVD 88) The\napproximation of &quot;ordinary high water&quot;; the level of Lk Washington\nvaries from 17.0'-18.6' during the year; the max lake elevation is 18.8' as\ncontrolled by Corps of Engineers (COE) at Hiram Chittenden Locks. The NAVD 88\nlake elevations have been converted from the U.S. Engineers Datum. This zero of\nNAVD 88 is 3.25' above the Locks Datum at the common bench mark P-7. The\nshoreline contour of 18.8' above NAVD 88 should be used from the Locks,\nupstream through Lk Union and Lk Washington. The COE has performed various\nstudies that show the level of Lk Wash to approximate an equipotential surface\nthat can be represented by a single contour elevation for mapping purposes.\nOTHER LAKES The shoreline around Green Lake and all other lakes are delimited\nby the water/land interface as seen on the aerial photography.</span></font></span></p>\n\n<p><span style='font-family:Verdana, sans-serif; background-color:rgb(255, 255, 255);'><font color='#000020' size='2'>Displays data from CARTO.SHORE_LN</font></span></p><p><span style='background-color:rgb(255, 255, 255);'><font color='#000020' size='2'>Updated as needed.</font></span></p>", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/csv?layers=0", "mediaType": "text/csv", "title": "CSV"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/excel?layers=0", "mediaType": "application/vnd.ms-excel", "title": "Excel"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/featureCollection?layers=0", "mediaType": "text/plain", "title": "Feature Collection"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/filegdb?layers=0", "mediaType": "application/zip", "title": "File Geodatabase"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/geoPackage?layers=0", "mediaType": "application/geopackage+sqlite3", "title": "GeoPackage"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/geojson?layers=0", "mediaType": "application/vnd.geo+json", "title": "GeoJSON"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/kml?layers=0", "mediaType": "application/vnd.google-earth.kml+xml", "title": "KML"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/shapefile?layers=0", "mediaType": "application/zip", "title": "Shapefile"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/api/download/v1/items/68321b62ca244950a0a0c1dfbd132562/sqlite?layers=0", "mediaType": "application/geopackage+sqlite3", "title": "SQLite Geodatabase"}, {"@type": "dcat:Distribution", "downloadURL": "https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::seattle-shoreline", "mediaType": "text/html", "title": "ArcGIS Hub Dataset"}, {"@type": "dcat:Distribution", "downloadURL": "https://services.arcgis.com/ZOyb2t4B0UYuYNYH/arcgis/rest/services/Shoreline/FeatureServer/0", "mediaType": "application/json", "title": "ArcGIS GeoService"}], "identifier": "https://www.arcgis.com/home/item.html?id=68321b62ca244950a0a0c1dfbd132562&sublayer=0", "issued": "2022-09-01", "keyword": ["gis", "seattle gis open data", "shore", "shoreline", "terrain"], "landingPage": "https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::seattle-shoreline", "modified": "2023-02-17", "publisher": {"@type": "org:Organization", "name": "City of Seattle ArcGIS Online"}, "spatial": "-122.4321,47.4417,-122.2327,47.7810", "theme": ["geospatial"], "title": "Seattle Shoreline"}