i08 Delta InChannel Islands
Data contains historical polygons of in-channel islands within the Sacramento San Joaquin Delta. Data consists of merged datasets from 1929, 1940, 1949, 1952, 1995, 2002, and 2017. The 2017 polygons are digitized from the 2017 Delta LiDAR imagery by the Division of Engineering, Geomatics Branch, Geospatial Data Support Section. The older pre-2017 polygons were all digitized by staff in the Delta Levees Program. Data can be queried for a single year or date range using the 'Year' field. Historical data was compiled and merged from datasets provided by the Delta Levees program. Data coverage differs between years. Absences or gaps in historical data may occur. Older acquisitions generally have a smaller footprint than recent imagery acquisitions. The 2017 in-channel islands cover the Legal Delta, and also include Chipps Island.
Resources
6 resources available
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ArcGIS Hub Dataset
HTML -
CSV
CSV -
GeoJSON
GEOJSON -
KML
KML -
Shapefile
ZIP -
ArcGIS GeoService
ARCGIS GEOSERVICES REST API
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{ "fn": "DWR GIS", "@type": "vcard:Contact", "hasEmail": "mailto:gis@water.ca.gov" } |
| description | <span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Data contains historical polygons of in-channel islands within the Sacramento San Joaquin Delta. Data consists of merged datasets from 1929, 1940, 1949, 1952, 1995, 2002, and 2017. The 2017 polygons are digitized from the 2017 Delta LiDAR imagery by the Division of Engineering, Geomatics Branch, Geospatial Data Support Section. The older pre-2017 polygons were all digitized by staff in the Delta Levees Program. Data can be queried for a single year or date range using the 'Year' field. Historical data was compiled and merged from datasets provided by the Delta Levees program. Data coverage differs between years. Absences or gaps in historical data may occur. Older acquisitions generally have a smaller footprint than recent imagery acquisitions. The 2017 in-channel islands cover the Legal Delta, and also include Chipps Island.</span> |
| distribution |
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| identifier | 714045bb-979b-4dd2-bc4b-712368a02ec4 |
| issued | 2023-02-07T17:40:39.000Z |
| keyword |
[ "California", "Channel", "DWR", "DWR GIS Atlas", "Geoscientific information", "Sacramento", "california department of water resources", "delta", "environment", "in channel islands", "islands", "san Joaquin delta" ] |
| license | http://www.opendefinition.org/licenses/cc-by |
| modified | 2025-05-29T16:18:11.000Z |
| publisher |
{ "name": "California Department of Water Resources", "@type": "org:Organization" } |
| theme |
[ "Natural Resources", "Water" ] |
| title | i08 Delta InChannel Islands |
