TY - RPRT TI - Modeling Water-Surface Elevations and Virtual Shorelines for the Colorado River in Grand Canyon, Arizona AU - Christopher S. Magirl AU - Michael J. Breedlove AU - Robert H. Webb AU - Peter G. Griffiths PY - 2008 DO - 10.3133/sir20085075 UR - https://pubs.usgs.gov/publication/sir20085075 ID - sir20085075 ER -