- Annual Meetings
- Snow Links
- Corporate Sponsors
- Contact Us
A modern forecast for Columbia River at Birchbank, B. C.
Submitted by Armida on Fri, 02/15/2013 - 16:34
|Title||A modern forecast for Columbia River at Birchbank, B. C.|
|Publication Type||Conference Proceedings|
|Year of Conference||1956|
|Authors||Nelson, M. W., and Simons W. D.|
|Conference Name||24th Annual Western Snow Conference|
|Series Title||Proceedings of the 24th Annual Western Snow Conference|
|Date Published||April 1956|
|Publisher||Western Snow Conference|
|Conference Location||Penticton, British Columbia|
A highly refined and straight forward procedure is described for developing seasonal (April-Sept.) water supply forecasting formulas for the Columbia River at Birchbank, B.C. The formulas are checked by 3 years of data NOT included in the data used to develop the equation.For the April first forecast a formula was developed using 7 snow survey courses and base flow of the river as of November 1. Current values for these variables are available to the forecaster on April first.For the May first forecast a third variable was added, the precipitation data of April, the average of 7 stations was computed. On June first a fourth variable was added, the May precipitation from the same 7 stations was averaged. For the three comparative years the average error for the April forecast was 5.5%; May forecast 3.9%; June 3.3%.Table shows the array of data used in the formula development and accuracy comparisons are shown.