The influence of aspect on water yield variability over a long period, 1936-1964, was studied at two small, mountainous watersheds within the Davis County Experimental Watershed near Farmington, Utah.
North-facing Miller Creek is densely vegetated by a conifer-aspen forest and mountain brush. Miller Creek's yield was more variable for daily, monthly, seasonal, and annual flows than yields from south-west facing Halfway Creek which is covered by mountain brush. Differences between watersheds in annual yield and snowmelt season runoff were nonsignificant.
The snowmelt runoff season extended for an average of 65 days on both watersheds, but it began 24 days earlier (March 29) on Halfway. Approximately 57 percent of the mean annual flow of 19.4 inches on Halfway, and 68 percent of Miller's mean annual yield of 17.9 inches occurred during the snowmelt runoff season.
One-third of Halfway's annual flow and one-half of Miller's occurred during the May 15 to September 15 growing season when only one-fifth of the annual precipitation of 42 inches usually fell. The difference between the growing season flows from the two watersheds was significant, with Miller's flow greater by 3.4 inches.
| Identifer | oai:union.ndltd.org:UTAHS/oai:digitalcommons.usu.edu:etd-3940 |
| Date | 01 May 1969 |
| Creators | Glasser, Stephen P. |
| Publisher | DigitalCommons@USU |
| Source Sets | Utah State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | All Graduate Theses and Dissertations |
| Rights | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact Andrew Wesolek (andrew.wesolek@usu.edu). |
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