Hydrography Lines

This layer contains hydrography such as streams, rivers, and other linear hydrography features. Hidden hydrography, inferred drainage connectors, or culverts connect visible hydrography to form a continuous network. These connectors or hidden features maintain a predictable direction connecting the 2 points that conceal or infer the feature. Streams: Captured as single line if less than two meters wide. Both water edges plotted if wider than two meters. Docks and Piers: Visible outline delineated. Jetty: Visible outline delineated. Seawall: Single line plotted at the face of the seawall. Hidden Hydrography: Hidden hydrography is not obvious, even to someone standing under a bridge for example; it cannot be seen photogrammetrically and can be captured only from other sources. Segments of rivers, streams, and canals that flow under features such as bridges and roads are captured as continuous portions of the river, stream, or canal.

Data e Risorse

Campo Valore
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
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://www.arcgis.com/home/item.html?id=a37de99f786e448682aafe05a0c98baa&sublayer=13
issued 2015-02-27T20:55:41.000Z
landingPage https://opendata.dc.gov/datasets/DCGIS::hydrography-lines
license https://creativecommons.org/licenses/by/4.0
metadata_type geospatial
modified 2024-09-26T16:27:06.000Z
old-spatial -77.1116,38.7920,-76.9134,38.9905
publisher Office of the Chief Technology Officer
resource-type Dataset
source_datajson_identifier true
source_hash ae766067b8f37a86f9d917cb47ad1f85bc4c7957660a274f544af643b1e5f4c2
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-77.1116, 38.7920], [-77.1116, 38.9905], [-76.9134, 38.9905], [-76.9134, 38.7920], [-77.1116, 38.7920]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • aqueduct
  • brook
  • canal
  • currentplanimetrics
  • dam
  • district-of-columbia
  • environmental
  • falls
  • hydrography
  • octo
  • planimetrics
  • river
  • shoreline
  • stream
  • washington-dc
  • water
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer DCGISopendata
maintainer_email gisgroup@dc.gov
metadata_created 2025-09-24T16:20:15.112670
metadata_modified 2025-09-24T16:20:15.112678
notes <div style='text-align:Left;'><div><div><p><span>This layer contains hydrography such as streams, rivers, and other linear hydrography features. Hidden hydrography, inferred drainage connectors, or culverts connect visible hydrography to form a continuous network. These connectors or hidden features maintain a predictable direction connecting the 2 points that conceal or infer the feature. Streams: Captured as single line if less than two meters wide. Both water edges plotted if wider than two meters. Docks and Piers: Visible outline delineated. Jetty: Visible outline delineated. Seawall: Single line plotted at the face of the seawall. Hidden Hydrography: Hidden hydrography is not obvious, even to someone standing under a bridge for example; it cannot be seen photogrammetrically and can be captured only from other sources. Segments of rivers, streams, and canals that flow under features such as bridges and roads are captured as continuous portions of the river, stream, or canal.</span></p></div></div></div>
num_resources 7
num_tags 24
title Hydrography Lines