This report presents a discussion of the Willow Creek floodplain and the results of the groundwater sampling conducted from 1999 to 2002. The installation of monitoring wells in the floodplain and near selected mine sites provided information on groundwater quality and associations with water quality in Willow Creek and the Rio Grande.

Report on Characterization of Groundwater in the Alluvial Deposits Beneath the Floodplain of Willow Creek Below Creede