TY - RPRT TI - Probability of Unmixed Young Groundwater (defined using chlorofluorocarbon-11 concentrations and tritium activities) in the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007 AU - Michael G. Rupert AU - Niel Plummer PY - 2009 DO - 10.3133/ds460 UR - https://pubs.usgs.gov/publication/ds460 ID - ds460 ER -