Name: HUC08 Watersheds Maryland Area

Display Field: name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The intent of defining Hydrologic Units (HU) within the Watershed Boundary Dataset is to establish a base-line drainage boundary framework, accounting for all land and surface areas. Hydrologic units are intended to be used as a tool for water-resource management and planning activities particularly for site-specific and localized studies requiring a level of detail provided by large-scale map information. The WBD complements the National Hydrography Dataset (NHD) and supports numerous programmatic missions and activities including: watershed management, rehabilitation and enhancement, aquatic species conservation strategies, flood plain management and flood prevention, water-quality initiatives and programs, dam safety programs, fire assessment and management, resource inventory and assessment, water data analysis and water census. <div>This dataset was created by combining USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 02 and USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 05. Original data can be found at https://www.sciencebase.gov/catalog/item/5a1632b3e4b09fc93dd171de and https://www.sciencebase.gov/catalog/item/5a1632b4e4b09fc93dd171ea. </div>

Copyright Text: U.S. Geological Survey (USGS), 20250108, USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 02 (published 20250108) Shapefile: U.S. Geological Survey (USGS). ; U.S. Geological Survey (USGS), 20250108, USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 05 (published 20250108) Shapefile: U.S. Geological Survey (USGS).

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -8907221.1673
YMin: 4617174.1715
XMax: -8398563.5678
YMax: 4966967.1329
Spatial Reference: 102100 (3857)

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True

Global ID Field:

Type ID Field:

Fields:

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• tnmid (type: esriFieldTypeString, alias: tnmid, SQL Type: sqlTypeOther, length: 40, nullable: true, editable: true)
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• areasqkm (type: esriFieldTypeDouble, alias: areasqkm, SQL Type: sqlTypeOther, nullable: true, editable: true)
• states (type: esriFieldTypeString, alias: states, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• huc8 (type: esriFieldTypeString, alias: huc8, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
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Templates:

Name: Watersheds_HUC08
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 6/24/2025 12:25:00 PM

Schema Last Edit Date: 6/24/2025 12:25:00 PM

Data Last Edit Date: 6/20/2025 3:15:56 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat