TY - RPRT TI - Investigation of water quality in the Great Sand Dunes National Monument and Preserve, Saguache County, Colorado, February 1999 through September 2000: Qualifying for outstanding waters designation AU - Sheryl A. Ferguson PY - 2003 DO - 10.3133/wri024196 UR - https://pubs.usgs.gov/publication/wri024196 ID - wri024196 ER -