City of Seattle Shoreline

A polygon feature class showing the City of Seattle, including Shoreline. It essentially follows the 8 foot contour line, except where the ortho offered further clarification. That 8 foot contour line matches closest to what NAVD88 shows as "mean high water" (see official definition below) at 7.97 feet. MEAN HIGH WATER (MHW): "A tidal datum. The average of all the high water heights observed over the National Tidal Datum Epoch. For stations with shorter series, simultaneous observational comparisons are made with a control tide station in order to derive the equivalent datum of the National Tidal Datum Epoch. "Source: http://co-ops.nos.noaa.gov/mapfinder/mhw.html”

Data e Risorse

Campo	Valore
accessLevel	public
catalog_@context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id	https://data.seattle.gov/data.json
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier	https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::city-of-seattle-shoreline
issued	2012-07-02
landingPage	https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::city-of-seattle-shoreline
metadata_type	geospatial
modified	2020-11-19
old-spatial	-122.4321,47.4417,-122.2327,47.781
publisher	City of Seattle GIS Program
resource-type	Dataset
source_datajson_identifier	true
source_hash	cd32c2088f77a96b36db170c5d60f93acf51cd0e
source_schema_version	1.1
spatial	{"type": "Polygon", "coordinates": [[[-122.4321, 47.4417], [-122.4321, 47.781], [-122.2327, 47.781], [-122.2327, 47.4417], [-122.4321, 47.4417]]]}
theme	{geospatial}
Gruppi	AmeriGEOSS National Provider North America
Tag	amerigeo amerigeoss boundaries city-limits ckan contours cosgis geo geoss landuse national north-america seattle seattle-public-utilities seattlecitygis tidal united-states wa wmcartoshore
isopen	False
license_id	notspecified
license_title	License not specified
maintainer	site.admin_SeattleCityGIS
maintainer_email	mapgis.mapgis@seattle.gov
metadata_created	2025-11-21T02:47:47.568047
metadata_modified	2025-11-21T02:47:47.568050
notes	<p><span style='line-height: 115%; font-family: '><font color='#000000'>A polygon feature class showing the City of Seattle, including Shoreline. It essentially follows the 8 foot contour line, except where the ortho offered further clarification. That 8 foot contour line matches closest to what NAVD88 shows as "mean high water" (see official definition below) at 7.97 feet. MEAN HIGH WATER (MHW): "A tidal datum. The average of all the high water heights observed over the National Tidal Datum Epoch. For stations with shorter series, simultaneous observational comparisons are made with a control tide station in order to derive the equivalent datum of the National Tidal Datum Epoch. </font></span></p><p><span style='line-height: 115%; font-family: '><font color='#000000'>"Source: </font><a href='http://co-ops.nos.noaa.gov/mapfinder/mhw.html'>http://co-ops.nos.noaa.gov/mapfinder/mhw.html</a><font color='#000000'>”</font></span></p>
num_resources	6
num_tags	19
title	City of Seattle Shoreline