The long-term trend of rainfall in the central Sierra region
Title | The long-term trend of rainfall in the central Sierra region |
Publication Type | Conference Proceedings |
Year of Conference | 1933 |
Authors | Sager, G. V. |
Conference Name | 1st Annual Western Interstate Snow Survey Conference |
Series Title | Proceedings of the 1st Annual Western Interstate Snow Survey Conference |
Date Published | February 1933 |
Publisher | University of Nevada, Agricultural Experiment Station Bulletin |
Conference Location | Reno, Nevada |
Keywords | Cycles, Precipitation analysis |
Abstract | Results of a study to ascertain if past rainfall records would indicate a probable trend or cyclic formation through a 60 year period (1897-1930) to indicate a probable termination of the long dry period, toward forecasting some relief even for a few years in advance. Data from precipitation stations at different altitudes extending from the Pacific Coast across the Sierra and Nevada to Salt Lake City were analyzed graphically by plotting departures from their normals against years. Graphs are shown. Lake levels at Tahoe, Pyramid and Winnemucca Lakes are also shown.Conclusions indicate there was little hope of finding a basis for seasonal or other long term forecasting from the data studied, including solar activity.In discussion Mr. F.B. Headley presented a separate graphical procedure for studying in connection with streamflow probabilities for irrigation districts in Nevada. Here the comparisons are reduced to zones rather than the individual stations. |