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https://hdl.handle.net/11681/9227| Title: | Projecting ice-affected streamflow by extended Kalman filtering |
| Authors: | California State University, Fullerton. Geological Survey (U.S.). Water Resources Division. Michigan District. Holtschlag, David J. Parker, Charles T. Grewal, Mohinder S. |
| Keywords: | Forecasting River ice Lake ice Ice jams Platte River, Nebraska Ice effects Kalman filter Kalman filtering Stream measurements St. John River, Maine |
| Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | CRREL report ; 97-8. |
| Description: | CRREL Report Abstract: An extended Kalman filter was developed to automate the real-time projection of ice-affected streamflow, based on routine measurements of stage and air temperature and the relation between stage and flow during open-water conditions. The form accommodates three dynamic modes of ice effects: sudden formation–ablation, stable ice conditions, and final elimination. The filter was applied to historical data from two long-term streamflow-gaging stations. They were stable and parameters converged for both stations, producing estimates that were highly correlated with and linearly related to published streamflow values in a log-transformed metric. At St. John River at Dickey, Maine, logarithms of projected streamflow values were within 8% of the logarithms of published values 87.2% of the time and within 15% of published values 96.6% of the time during periods of ice effects. At Platte River at North Bend, Nebraska, logarithms of projected streamflow values were within 8% of the logarithms of published daily values 90.7% of the time and within 15%, 97.7% of the time during ice-affected conditions. This extended Kalman filter allows estimation of ice-affected streamflow at other gaging stations by adjusting filter parameters to site-specific conditions. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/9227 |
| Appears in Collections: | CRREL Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CR-97-8.pdf | 1.23 MB | Adobe PDF |  View/Open |