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TitleGRACE-based flood forecasting for the Red River basin
AuthorWang, S; Russell, H
SourceWater Resources Research .
Alt SeriesEarth Sciences Sector, Contribution Series 20150272
PublisherAmerican Geophysical Union
Documentserial
Lang.English
Mediapaper
ProgramAquifer Assessment & support to mapping, Groundwater Geoscience
AbstractFlood forecasting of the spring freshet for cold-region watersheds where the discharge is predominately governed by snowpack accumulation and melting remains a challenge. A cold-region flood forecasting model is developed using the data from Gravity Recovery and Climate Experiment (GRACE) satellite mission. The model forecasts flood by simulating peak surface runoff from snowmelt and the corresponding baseflow from groundwater discharge. Surface runoff is predicted from snowmelt using a temperature index model. Baseflow is predicted using a first order differential equation model. Streamflow measurement is used for model calibration. The model was applied to the Red River watershed, a USA-Canada transboundary basin located in central North America. The predicted flood compares well with the observed values at a downstream hydrometric station (r=0.95). The result also reveals a two-week hysteresis between the maximum snowmelt and the peak streamflow observed at the station. The model is relatively simple and only needs GRACE and temperature inputs for flood forecasting. It can be readily applied to other cold-region basins after simple calibration, and could be particularly useful in regions with minimal data.
Summary(Plain Language Summary, not published)
Flood forecasting of the spring freshet for cold-region watersheds remains a challenge. A cold-region flood forecasting model is developed based on the Gravity Recovery and Climate Experiment (GRACE) satellite mission. The model was applied to the Red River watershed, a USA-Canada transboundary basin located in central North America. The predicted flood compares very well with the observed values at a downstream hydrometric station (r=0.95). The result also reveals a two-week time for the snowmelt water to reach Winnipeg. The model can be readily applied to other cold-region basins after simple calibration, and could be particularly useful in regions with minimal data.
GEOSCAN ID297101