TY - RPRT TI - Chemistry and age of groundwater in bedrock aquifers of the Piceance and Yellow Creek watersheds, Rio Blanco County, Colorado, 2010-12 AU - P.B. McMahon AU - J.C. Thomas AU - A.G. Hunt PY - 2013 DO - 10.3133/sir20135132 UR - https://pubs.usgs.gov/publication/sir20135132 ID - sir20135132 ER -