1. Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, USA.
2. Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf 8600, Switzerland.
3. Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824, USA.
4. Department of Civil and Structural Engineering, University of Sheffield, Sheffield S10 2TN, UK.
5. School of Architecture, Cibil and Environmental Engineering (ENAC), Ecole Polytechique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
6. Department of Civil and Environmental Engineering, University of Iowa, Iowa City, IO 52242, USA.