1. Department of Natural Resources and the Environment, Wildlife and Fisheries Conservation Center University of Connecticut 1376 Storrs Road Storrs Connecticut 06268 USA
2. Earth System Processes Division, Hydrogeophysics Branch U.S. Geological Survey 11 Sherman Place Storrs Connecticut 06268 USA
3. Department of Civil and Resource Engineering Dalhousie University 1360 Barrington Street Halifax Nova Scotia B3H 4R2 Canada