Humboldt River Main Stem Geometry from 1994 Orthophotos

River geometry data for the main stem of the Humboldt River in Nevada, as defined by U.S. Geological Survey personnel. The dataset was digitized on-screen using 1994 digital orthophoto quadrangles (DOQs) and underwent a rigorous multi-level quality-control process. It was created by the U.S. Geological Survey Nevada District in 2001 for GIS-based river mile calculations.

Use Cases

• Calculate river miles for water resource planning using the digitized river line geometry.
• Analyze historical river course and geometry from the 1994 source imagery for change detection studies.
• Use the USGS-defined main stem as a base layer for watershed modeling and hydrological analysis.

Strengths

• Data quality was ensured through a rigorous multi-level quality-control process and two formal reviews.
• Digitized from 1994 digital orthophoto quadrangles (DOQs), noted for exceeding the currentness and accuracy of other available data at the time.

Limitations

• Temporal coverage is limited to a snapshot from 1994 source imagery, which is now over 30 years old.
• Spatial coverage is restricted to the main stem of the Humboldt River as defined in 2001, excluding tributaries.

Provenance

Source

U.S. Geological Survey (USGS) Nevada District, Humboldt Project personnel.

Collection Method

Digitized on-screen from 1994 digital orthophoto quadrangles (DOQs).

Time Range

Source imagery from 1994; dataset created in 2001.

Freshness

1994-12-31

Geography

Main stem of the Humboldt River, Nevada, USA.