1. Biosystems and Agricultural Engineering Department, University of Kentucky, 128 Barnhardt, Lexington, KY 40506, USA
2. United States Geological Survey, Water Resources Mission Area, 3215 Marine St., Boulder, CO 80303, USA
3. Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68508, USA
4. School of Natural Resources, East Campus, University of Nebraska-Lincoln, 101 Hardin Hall, Lincoln, NE 68583, USA
5. Water Sciences Laboratory, East Campus, University of Nebraska-Lincoln, 1840 N. 37th Street, Lincoln, NE 68583, USA