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System Engineering Branch

Hydrologic Service Area Boundaries [hsddmmyy]

Image of HSA boundaries

Description Valid Date Available version(s) Size (bytes) #Records Documentation
HSA Boundaries 03 December 2014 Download Compressed Shapefile 17,483,957 123 123 Change History Metadata (HTML)
11 August 2016 Download Compressed Shapefile 17,483,957 123

File Specifications:

Naming Convention: hs ddmmyy .shp/.shx/.dbf - where .shp, .shx, .dbf are the extensions of the 3 component files of the shapefile and .prj is the projection file.
Shapefile Type: polygon
Source: NWS Office of Climate, Water and Weather Services (OCWWS)


field name type width,dec description
WFO character 3 WFO Identifier (name of CWA)
LON numeric 10,5 Longitude of centroid [decimal degrees]
LAT numeric 9,5 Latitude of centroid [decimal degrees]


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