Flow Direction
type: Dataset
description: The USGS National Hydrography Dataset (NHD) service from The National Map is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and transported material flow allows users to trace movement in upstream and downstream directions. In addition to this geographic information, the dataset contains metadata that supports the exchange of future updates and improvements to the data. The NHD is available nationwide in two seamless datasets, one based on 1:24,000 (or larger) scale and referred to as high resolution NHD, and the other based on 1:100,000 scale and referred to as medium resolution NHD. The NHD from The National Map supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. The NHD is commonly combined with other data themes, such as boundaries, elevation, structures, and transportation, to produce general reference base maps. The National Map download client allows free downloads of public domain NHD data in either Esri File Geodatabase or Shapefile formats. For additional information on the NHD, go to https://www.usgs.gov/national-hydrography/national-hydrography-dataset. See https://apps.nationalmap.gov/help/ for assistance with The National Map viewer, download client, services, or metadata.
issued: 2023-07-21T15:58:11+00:00
modified: 2023-07-21T16:02:08+00:00
publisher: GeoPlatform ArcGIS Online
keyword: FGDC
keyword: GDA
keyword: NGDA
landing page: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/datasets/geoplatform::flow-direction-1

ISO 19139 HTML Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification in XML format
format: XML
issued: 2025-09-29T13:48:49.037596
modified: 2025-09-29T13:48:49.030175
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

Metadata description in Inspire format
type: Distribution
description: Metadata description in INSPIRE Metadata Directive format
format: XML
issued: 2025-09-29T13:48:49.037592
modified: 2025-09-29T13:48:49.029861
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

CSDGM
type: Distribution
description: Metadata description in FGDC CSDGM format
format: XML
issued: 2025-09-29T13:48:49.037587
modified: 2025-09-29T13:48:49.029665
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

OGC API - Records API Definition Page
type: Distribution
description: This resource describes how to use the Search API to programmatically query, filter, search and retrieve resources.
format: JSON
issued: 2025-09-29T13:48:49.037605
modified: 2025-09-29T13:48:49.030776
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/search/definition

ISO 19139 Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification in XML format
format: XML
issued: 2025-09-29T13:48:49.037595
modified: 2025-09-29T13:48:49.030098
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

OGC API - Records Item
type: Distribution
description: Provides an OGC API - Records item compliant representation of this resource in JSON format.
issued: 2025-09-29T13:48:49.037606
modified: 2025-09-29T13:48:49.030849
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/search/v1/collections/dataset/items/a5596a356db141248e7d24ac2102efe0
media type: text/json

KML
type: Distribution
format: KML
issued: 2025-09-29T13:48:49.037615
modified: 2025-09-29T13:48:49.031440
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/a5596a356db141248e7d24ac2102efe0/kml

CSV
type: Distribution
format: CSV
issued: 2025-09-29T13:48:49.037612
modified: 2025-09-29T13:48:49.031219
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/a5596a356db141248e7d24ac2102efe0/csv

ISO 19139-3.2 Metadata Description
type: Distribution
description: Metadata description in ISO 19139 Metadata Implementation Specification GML3.2 in XML Format
format: XML
issued: 2025-09-29T13:48:49.037597
modified: 2025-09-29T13:48:49.030251
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

DCAT 2.0.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 2.0.1 Implementation format
issued: 2025-09-29T13:48:49.037601
modified: 2025-09-29T13:48:49.030475
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-ap/2.0.1
media type: text/json

Shapefile
type: Distribution
format: ZIP
issued: 2025-09-29T13:48:49.037613
modified: 2025-09-29T13:48:49.031292
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/a5596a356db141248e7d24ac2102efe0/shapefile

Metadata description in Dublin Core+ format
type: Distribution
description: Metadata description in Dublin Core+ format
format: XML
issued: 2025-09-29T13:48:49.037590
modified: 2025-09-29T13:48:49.029776
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

GeoJSON
type: Distribution
format: GeoJSON
issued: 2025-09-29T13:48:49.037614
modified: 2025-09-29T13:48:49.031366
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/api/download/v1/items/a5596a356db141248e7d24ac2102efe0/geojson

ESRI ArcGIS Metadata Description
type: Distribution
description: Metadata description in ESRI ArcGIS XML Implementation format
format: XML
issued: 2025-09-29T13:48:49.037599
modified: 2025-09-29T13:48:49.030324
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

North American Profile
type: Distribution
description: Metadata description in North American Profile of ISO 19115 2003 format
format: XML
issued: 2025-09-29T13:48:49.037593
modified: 2025-09-29T13:48:49.029941
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

ISO 19115
type: Distribution
description: Metadata description in ISO 19115 format
format: XML
issued: 2025-09-29T13:48:49.037594
modified: 2025-09-29T13:48:49.030020
access URL: https://www.arcgis.com/sharing/rest/content/items/a5596a356db141248e7d24ac2102efe0/info/metadata/metadata.xml

DCAT 1.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 1.1 Implementation format
issued: 2025-09-29T13:48:49.037600
modified: 2025-09-29T13:48:49.030400
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-us/1.1
media type: text/json

RSS Metadata Description
type: Distribution
description: Metadata description in RSS 2.0 Implementation format
format: RSS
issued: 2025-09-29T13:48:49.037604
modified: 2025-09-29T13:48:49.030700
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/rss/2.0

DCAT 2.1.1 Metadata Description
type: Distribution
description: Metadata description in DCAT 2.1.1 Implementation format
issued: 2025-09-29T13:48:49.037602
modified: 2025-09-29T13:48:49.030550
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-ap/2.1.1
media type: text/json

ArcGIS GeoService
type: Distribution
format: ArcGIS GeoServices REST API
issued: 2025-09-29T13:48:49.037609
modified: 2025-09-29T13:48:49.031071
access URL: https://hydro.nationalmap.gov/arcgis/rest/services/nhd/MapServer/3

DCAT 3.0.0 Metadata Description
type: Distribution
description: Metadata description in DCAT 3.0.0 Implementation format
issued: 2025-09-29T13:48:49.037603
modified: 2025-09-29T13:48:49.030625
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/feed/dcat-ap/3.0.0
media type: text/json

Feed API - Definitions Search Page
type: Distribution
description: Provides access to the API Definition page for this resource to programmatically filter DCAT US 1.1, DCAT AP 2.0.1, DCAT AP 2.1.1, DCAT 3.0.0, and RSS 2.0 compliant API's
format: JSON
issued: 2025-09-29T13:48:49.037607
modified: 2025-09-29T13:48:49.030922
access URL: https://ngda-transportation-geoplatform.hub.arcgis.com/api/search/v1/collections/dataset/items/a5596a356db141248e7d24ac2102efe0

OGC WMS
type: Distribution
format: OGC WMS
issued: 2025-09-29T13:48:49.037611
modified: 2025-09-29T13:48:49.031145
access URL: https://hydro.nationalmap.gov/arcgis/services/nhd/MapServer/WMSServer

ArcGIS Hub Dataset
type: Distribution
format: HTML
issued: 2025-09-29T13:48:49.037608
modified: 2025-09-29T13:48:49.030997
access URL: https://ngda-portfolio-community-geoplatform.hub.arcgis.com/datasets/geoplatform::flow-direction-1