Colorado River Corridor Multispectral Mosaic at 20cm Resolution, 2013

Four-band multispectral imagery of the Colorado River in Grand Canyon, Arizona, acquired in May 2013. The Grand Canyon Monitoring and Research Center collected this data with a ground resolution of 20 centimeters and a reported positional accuracy of 0.64 meters at 95% confidence. These 16-bit geotiff files are projected in State Plane for Arizona and intended for mapping sandbars, riparian vegetation, and habitat change.

Use Cases

• High-resolution change detection of sandbars and riverbank erosion based on the 20cm multispectral imagery.
• Mapping riparian vegetation health and distribution based on the near-infrared band.
• Creating detailed base maps for field data collection and river navigation mentioned as a primary use.
• Analyzing backwater and near-shore aquatic habitats based on the high spatial resolution data.

Strengths

• High spatial resolution of 20 centimeters per pixel.
• Assessed positional accuracy of 0.64 meters based on 91 Ground Control Points.
• Contains four spectral bands (blue, green, red, near-infrared) for analysis.
• Data is publicly available as 16-bit geotiff files.

Limitations

• Dataset is from a single time point (May 2013), limiting temporal analysis.
• Row count and total file size are unknown, which may limit suitability assessment.
• Column-level documentation for the image files is absent; file semantics must be inferred.

Provenance

Source

Grand Canyon Monitoring and Research Center (GCMRC) of the U.S. Geological Survey Southwest Biological Science Center.

Collection Method

Airborne multispectral data acquisition.

Time Range

May 2013

Geography

Colorado River corridor in Grand Canyon, Arizona, USA.