Denver Federal Center / L. Niel Plummer Abstract Great Sand Dunes National Monument / Great Sand Dunes Headquarters / Great Sand Dunes National Monument / Introduction Great Sand Dunes National Monument / /
NaturalFeature
Between Unconfined aquifer / San Luis Valley / Sand creek / Confined Aquifer / Sand Dunes / Area Description Great Sand Dunes / Connection Between Unconfined aquifer / Sangre de Cristo Mountain / Sangre de Cristo Mountains / Connection Between aquifer / Unconfined aquifer / Big creek / Connection aquifer / Little Spring creek / San Juan Mountains / Medano creek / Great Sand Dunes / Between aquifer / Rio Grande / /
Organization
U.S. Department of the Interior U.S. Geological Survey Ground-Water Flow Direction / National Park Service / U.S. Government / Denver Federal Center Denver / U.S. Department of the Interior / /
Person
Michael G. Rupert / L. Niel Plummer Prepared / Charles G. Groat / / /
Position
Director U.S. Geological Survey / Major / Secretary U.S. Geological Survey / /
Prepared in cooperation with the National Park Service Ground-Water Flow Direction, Water Quality, Recharge Sources, and Age, Great Sand Dunes National Monument, South-Central Colorado, [removed]