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<br />The project includes the following interrelated components, which are listed in the order <br />they will be implemented, subject to available funding. At the current level of funding <br />proposed by the BAHG, only Items I and 2 will be fully funded in FY06. <br />I) The current program of repeat mapping of campable area at a judgmental <br />sample of sand bar camps will continue, while we transition to using more <br />remotely sensed data. In addition, we will evaluate campable area changes in <br />relation to overall changes in sand bar topography to assist in determining the <br />specific factors responsible for campable area decline. <br />2) We will compare campable area at currently used camp sites with campable <br />area polygons derived from GIS analysis of remotely sensed data (Breedlove, <br />2003). As part of this effort, we will also thoroughly evaluate the limitations <br />and benefits of using remotely sensed data to track changes in various camp <br />attributes at a variety of camp types through time. <br />3) To supplement the campsite area change detection data, we will continue to <br />support the Grand Canyon River Guides in gathering and archiving a long- <br />term visual record of campsite changes using volunteer labor provided <br />through the Grand Canyon River Guides' Adopt-A-Beach program. <br />4) If sufficient funding is available in FY06, aerial photo-based inventories by <br />Weeden et al. (1975), Brian and Thomas (1984), and Kearsley and Warren <br />(1993) will be compiled into a single GIS. The quality and collection methods <br />of this pre-existing aerial photo data will be evaluated, then transferred to one <br />set of orthorectified digital imagery in a spatially referenced GIS. <br />5) If sufficient funding is available in FY06, begin the process of <br />comprehensively inventorying all campsites currently used by river runners in <br />the river corridor. Supplement the existing camp site inventory data (now <br />somewhat out of date) with information derived from recent commercial <br />guidebooks (e.g. Martin and Whitis, 2004) and by interviewing commercial <br />guides and science outfitters to identifY all actively used locations. Combine <br />the geographic information with past and current NPS assessments of the <br />maximum group size considered appropriate for each identified campsite. <br /> <br />. <br /> <br />. <br /> <br />. <br />