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<br />001741 <br /> <br />18 <br /> <br />sensing technologies recommended to the Technical Work Group in the final report from the <br />remote sensing initiative. The remote sensing technology proposed for 2005 was multi-spectral <br />and panchromatic digital imagery (25 cm and 12.5 cm spatial resolutions) together with digital <br />elevation data (1 meter spatial resolution), whose analysis was automated in 2003 to produce <br />terrestrial vegetation and fine-grained sediment inventories. <br />Remote sensing accomplishments in FY2002-03 included acquisition of a canyon-wide <br />set of multi-spectral digital imagery and a I-meter digital elevation model (DEM), a successful <br />test of very high resolution LiDAR within Marble Canyon, and the publication of results from <br />the remote sensing initiative. Several automated products were developed from the multi- <br />spectral imagery. These include: a canyon-wide fine-grained sediment inventory, a camping <br />beach characteristic inventory, and the development of digital topographic cross-sections (based <br />on the May, 2002 I-meter digital elevation model) to support hydrographic modeling. FY2004 <br />accomplishments included: a detailed, canyon-wide vegetation map developed from the May, <br />2002 multi-spectral digital imagery; acquisition of canyon-wide multi-spectral and panchromatic <br />digital imagery (assuming available funds); and very high resolution LiDAR, hydrographic <br />LiDAR and selected multi-beam sonar to support a final assessment of these technologies as <br />primary monitoring technologies. These data will form the basis of detailed inventories, change <br />analyses and technology assessments that will be produced in FY2006 and beyond. <br />Terrestrial digital elevation base maps - Prior to 2001, GCMRC had sub-meter accuracy <br />terrestrial topographic maps of approximately 80 miles of the ecosystem in 17 areas of <br />concentrated scientific effort that have been referred to as GIS sites. GCMRC also has similar <br />topographic maps from GCD to Badger Rapid near river mile (RM) 8 derived from our LiDAR <br />evaluation in 1998. In FY2000, the GCMRC collected high-resolution orthophotography and <br />topography of the entire CRE. This dataset provides one-foot resolution geo-referenced and <br />rectified imagery and one meter interval contour maps as well as a four-meter digital elevation <br />model. This data set was delivered, inspected, and incorporated into the GCMRC FTP site <br />(accessible from the GCMRC web page or directly at ftp.gcmrc.gov) in the /data/orthophotos and <br />/data/lidar subdirectories. In addition to sub-meter terrestrial base maps described above, we <br />have high-resolution field surveys of 35 sand bar sites that have been repeated at varying <br />intervals since 1991. The GCMRC has numerous field surveys of vegetation, cultural, and <br /> <br />GCMRC FY2006 Annual Work Plan (Draft February 15,2005) <br />