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snippet: The hydrologic unit sub-region boundaries for Washington State.
summary: The hydrologic unit sub-region boundaries for Washington State.
extent: [[-125.071855122502,45.0577786993896],[-115.150060804684,50.6405474237149]]
accessInformation: US Geological Survey, US Natural Resource Conservation Service
thumbnail: thumbnail/thumbnail.png
maxScale: 1.7976931348623157E308
typeKeywords: ["Data","Service","Map Service","ArcGIS Server"]
description: The United States is divided and sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. The hydrologic units are arranged or nested within each other, from the largest geographic area (regions) to the smallest geographic area (cataloging units). Each hydrologic unit is identified by a unique hydrologic unit code (HUC) consisting of two to eight digits based on the four levels of classification in the hydrologic unit system. The second level of classification divides the 21 regions into 221 subregions. A subregion includes the area drained by a river system, a reach of a river and its tributaries in that reach, a closed basin(s), or a group of streams forming a coastal drainage area.
licenseInfo:
catalogPath:
title: NHD_WBD_HUC4
type: Map Service
url:
tags: ["Washington","Ecology","Hydrologic Unit","Sub-Region","watershed","cataloging unit","4 digit HUC","WBD","HUC","Watershed Boundary Dataset"]
culture: en-US
name: NHD_WBD_HUC4
guid: D75077CC-DCCA-472D-9793-2CD210337281
minScale: 0
spatialReference: NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602_Feet