Evaluation of Enhancements to the Snowmelt Runoff Model

TitleEvaluation of Enhancements to the Snowmelt Runoff Model
Publication TypeConference Proceedings
Year of Conference2005
AuthorsHarshburger, B. J., Blandford T. R., Humes K. S., Walden V. P., and Moore B. C.
Conference Name73rd Annual Western Snow Conference
Series TitleProceedings of the 73rd Annual Western Snow Conference
Date PublishedApril 2005
PublisherWestern Snow Conference
Conference LocationGreat Falls, MT
KeywordsSRM, Big Wood River, degree days, SNOTEL, rain-on-snow

As part of a larger effort to develop tools for improved short-term (1-2 week) streamflow forecasting in snowmelt-dominated basins, the Snowmelt Runoff Model (SRM) is used to simulate and forecast streamflow in the Big Wood River basin, Idaho. Several enhancements to SRM will be evaluated: a) a new method to estimate degree-days; b) new techniques used to assign and temporally update model parameters (degree-day factor and runoff coefficients) that make use of data from SNOTEL sites located within the basin and; c) the incorporation of relative humidity and wind speed data into a new (optional) model module designed to improve model performance during rain-on-snow events. Model results will be evaluated to determine the usefulness of these enhancements.