Parameter estimation for the precipitation runoff modeling system using snow course and snow telemetry system data

A distributed parameter, deterministic, physical process model known as the Precipitation Runoff Modeling System (PRMS), developed by George Leavesley of the US Geological Survey is used to determine the feasibility of using telemetered as well as manually measured snowpack and precipitation information to develop a forecasting tool for use in the East Fork of the Carson River, Nevada. Sources of error in streamflow simulations are a result of the incorrect indentification of the form of precipitation, and the simulation of the highly variable distribution of precipitatioN and air temperature on the watershed. Procedures that identify the form and improve the distribution of precipitaton on the watershed are developed and tested. A probability analysis technique developed for use with PRMS is reviewed and possibilities for its application and further development are discussed.