TY - RPRT TI - Transient simulation of groundwater levels within a sandbar of the Colorado River, Marble Canyon, Arizona, 2004 AU - Thomas A. Sabol AU - Abraham E. Springer PY - 2013 DO - 10.3133/ofr20131277 UR - https://pubs.usgs.gov/publication/ofr20131277 ID - ofr20131277 ER -