Variation in streamflow from different hydrologic zones

TitleVariation in streamflow from different hydrologic zones
Publication TypeConference Proceedings
Year of Conference1957
AuthorsWilson, M. T.
Conference Name25th Annual Western Snow Conference
Series TitleProceedings of the 25th Annual Western Snow Conference
Date PublishedApril 1957
PublisherWestern Snow Conference
Conference LocationSanta Barbara, California
KeywordsFlow analysis, Hydrologic zones

Streamflow of rivers or the flow of different reaches of the same stream are discussed. Streamflow is a residue, it is the remainder of the precipitation after natural losses and normal use of the original quantity have been subtracted. The principal factors affecting the residue (streamflow) are transpiration, evaporation, deep percolation, soil moisture, and interception. The 'same hydrologic zones' is used to express sameness in precipitation, altitude, geology, and vegetative cover and other major factors that control the runoff characteristics. The 'double mass diagram' is employed to show the variation of streamflow derived from various zones, influenced by a change in factors describing the zones. Results of this procedure are used to fill missing streamflow data for secondary gaging stations, from data measured at a primary station.Discussion by F. B. Blanchard.