Groundwater response in the Upper Wyodak coal zone, Powder River Basin, Wyoming

This study uses groundwater data collected by the Bureau of Land Management to examine how groundwater levels in the Upper Wyodak coal zone have responded to decreased coalbed methane production in the Powder River Basin, Wyoming. The type, magnitude and timing of water level responses are evaluated. Changes in groundwater levels are analyzed as they relate to monitoring well proximity to recharge areas and time elapsed since CBM production declined or ceased. The report contains monitoring well and water level statistics as well as time series graphs for all monitoring sites.