TY - RPRT TI - Water Resources Data, Colorado, Water Year 1991. Volume 1. Missouri River Basin; Arkansas River Basin; and Rio Grande Basin AU - R.C. Ugland AU - B.J. Cochran AU - M.M. Hiner AU - R.D. Steger PY - 1992 DO - 10.3133/wdrco911 UR - https://pubs.usgs.gov/publication/wdrCO911 ID - wdrCO911 ER -