1. Department of Civil, Environmental and Architectural EngineeringUniversity of Colorado at BoulderBoulder Colorado USA
2. Bureau of Reclamation, Technical Service CenterDenver Colorado USA
3. Cooperative Institute for Research in Environmental Sciences, University of Colorado at BoulderBoulder Colorado USA
4. NOAA Earth System Research LaboratoryBoulder Colorado USA
5. Department of Applied MathematicsUniversity of Colorado at BoulderBoulder Colorado USA