Wyoming Watershed Boundaries at 1:24,000 Scale for Subwatershed Management

A complete digital hydrologic unit boundary layer to the 6th-level Subwatershed for the state of Wyoming. The data was developed by digitizing watershed boundary lines using 1:24,000 Enhanced Digital Raster Graphics and 1:100,000-scale draft lines, created by SCIOPS and last updated in March 2002. It is intended as a tool for water-resource management and planning, particularly for site-specific studies requiring large-scale map detail.

Use Cases

• Site-specific water-resource management planning based on detailed 6th-level sub-watershed boundaries.
• Localized hydrological studies based on large-scale (1:24,000) geospatial boundary data.
• Integrating state-level watershed data into a national seamless geospatial database based on the described Federal Standards.
• Analyzing watershed attributes like downstream flow, non-contributing areas, and flow modification based on polygon attributes.

Strengths

• Data is complete for the state of Wyoming at the 6th-level subwatershed detail.
• Developed using a standardized method (Federal Standards For Delineation of Hydrologic Unit Boundaries).
• Provides two distinct shapefiles (arcs and polygons) with specific attributes for different analytical purposes.

Limitations

• Last updated 2002-03-01 23:59:59.999000; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

SCIOPS, via nasa_earthdata platform.

Collection Method

Digitized from 1:24,000 Enhanced Digital Raster Graphics (DRG-E) and 1:100,000-scale draft boundaries derived from the National Elevation Dataset (NED).

Time Range

Snapshot as of March 2002.

Freshness

2002-03-01 23:59:59.999000

Geography

State of Wyoming, United States.