Dong-Hyun Kim¹, Amina Naliaka², Zhipeng Zhu³, Hilary K McMillan¹, Fred L. Ogden⁴ and CUAHSI-NWC SI 2019, Scaling Theme Team: TOPMODEL-NWM Coupling, (1)San Diego State University, Department of Geography, San Diego, CA, United States, (2)Southern Illinois University, Department of Environmental Resources and Policy, Carbondale, IL, United States, (3)University of Cincinnati Main Campus, Environmental Engineering and Science, Cincinnati, OH, United States, (4)NOAA/NWS Office of Water Prediction, National Water Center, Tuscaloosa, AL, United States