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Layer: HU8 Watersheds (NHD) (ID: 11)

Name: HU8 Watersheds (NHD)

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This data set is a complete digital hydrologic unit boundary layer of the Subbasin (8-digit) 4th level for the entire United States. This data set consists of geo-referenced digital data and associated attributes created in accordance with the "Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3" (04/01/2009). http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/water/watersheds/?cid=nrcs143_021630 . Polygons are attributed with hydrologic unit codes, name, and size. The data is currently updated through the USGS National Hydrography Dataset (NHD) Program and replicated to NRCS twice per year. The U.S. Fish and Wildlife Service (USFWS)modified this version of the dataset by deleting some fields, reprojected the data to an Albers equal area projection and recalculated the 'AreaAcres' field. Those Subbasins that did not extend to NOAA's 3 Nautical Mile Line were extended by the USFWS to meet this boundary to provide consistency across Subbasins, and Subbasins were created for the Rota, Tinian, and the Palmyra Atoll.

Copyright Text: The United States Geological Survey (USGS) The National Hydrography Dataset (NHD) The Watershed Boundary Dataset (WBD) 1-888-275-8747 nhd@usgs.gov Funding and support for the Watershed Boundary Dataset (WBD) were provided by the Natural Resources Conservation Service, the Environmental Protection Agency, and the United States Geological Survey. Representatives from the U.S. Geological Survey and Environmental Protection Agency contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the Federal Standards for Delineation of Hydrologic Unit Boundaries.

Default Visibility: false

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
Supported Operations:   Query   Generate Renderer   Return Updates

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