Hyperspectral image data from the Snake River in Grand Teton National Park, WY, August 23, 2015

Hyperspectral image data from the Snake River in Grand Teton National Park, WY, were acquired on August 23, 2015 to support research on remote sensing of rivers, particularly retrieval of water depth, and to facilitate efforts to augment an image time series for characterizing channel change along the Snake River. These data were collected by the Compact Airborne Spectrographic Imager (CASI) 1500H manufactured by ITRES Research Limited.  ITRES also conducted the flight and performed the initial radiometric and geometric data processing. The data were acquired from fixed wing aircraft and have a spatial resolution (pixel sizes) of 0.5 m. The data set consists of 48 spectral bands spanning the visible and near infrared wavelength range from 0.368 - 1.039 micrometers.  Atmospheric correction and reflectance retrieval were performed by ITRES using the ATCOR4 software package. The image pixel values represent reflectance with a scale factor of 10,000 and are stored as 16-bit signed integers.  The image data file has a band sequential (BSQ) interleave and is in an ENVI-compatible *.dat file format with an associated header (*.hdr) text file. The image provided in this data release is a subset focused on the reach downstream of Jackson Lake referred to as Swallow Bend from which supporting field measurements were collected in coordination with the acquisition of the remotely sensed data.