Use of the electronic computer for streamflow analysis

A description of the processes used on the electronic computer for deriving multiple regression formulas using the many independent variables required in snow water supply forecasting is presented. The advantage of obtaining statistical relations between as many as 33 variables and streamflow figures within 15 minutes is shown. The detail results and procedures for developing a multiple regression formula for the Madison River at West Yellowstone, Montana with explanation of results, are given. Reasons for the 4 different forecast periods, together with peak flow and number of days to exceed critical flows are described. Four tables are included to show the results of the statistical criteria and formulas used.