Hydrologic Modeling of Floods in Mountain Watersheds, New Zealand. University of Canterbury, National Institute of Water and Atmospheric Research, and Department of Conservation. Leading projects applying, testing, and refining deterministic/mechanistic (HEC-HMS and TopNet) and statistical hydrologic models in mountain watersheds in New Zealand for improved simulation of snowmelt runoff, floods, and floodplain impacts. Evaluating snow and climate monitoring networks and data for model input, effects of future land use and climate change on snowmelt and flood hydrology, and impacts on downstream floodplain hydraulics. Also includes comparing deterministic and statistical flood modeling results for evaluating downstream ecological flows and other impacts. Runoff estimates are being used as input to hydraulic and hydrodynamic floodplain models.
Hydraulic Modeling of Floods in Braided River Floodplains. University of Canterbury and Department of Conservation. Leading a project modeling and evaluating the hydraulics of braided river floods and impacts on floodplain geomorphology and riparian vegetation in the Ahururi River in the Upper Waitaki River Basin. Involves extensive floodplain geomorphic and vegetation data collection, use of aerial photos and Structure-from-Motion software to develop 3-D terrain models and analyze geomorphic and vegetation changes before and after floods, and application and testing of HEC-RAS and the Delft3D hydrodynamic model to simulate flood hydraulics and impacts on geomorphology and vegetation. Developing maps of modeled geomorphic and riparian vegetation impacts from flood events to help evaluate ecological flows and restoration efforts. Detailed error and uncertainty analysis is also being performed.