Research Article
Sep 1976
Low Flow Modeling in Small Steep Watersheds
Publication: Journal of the Hydraulics Division
Volume 102, Issue 9
Abstract
On some small steep mountain watersheds the magnitude of low streamflow is almost uniform for prolonged periods. This phenomenon is exhibited by three small drainage areas within the Entiat Experimental Forest of central Washington State. On these watersheds about two-thirds of the annual precipitation is in the form of snow. Annual hydrographs for each area are characterized by an almost uniform flow with a complex snowmelt hydrograph superimposed between March and August. The only distinct recession curve occurs at the end of the snowmelt season and continues to decrease until a relatively uniform streamflow typified by the watershed is reached. In a computer simulation study of the three drainage areas, a linear ground-water reservoir submodel based on the recorded streamflow recession curves was found to be inadequate during low flow periods. Modifications to the subsurface part of the simulation model to improve the representation of the prolonged period of relatively uniform low flows are described in this paper.
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Published In
Journal of the Hydraulics Division
Volume 102 • Issue 9 • September 1976
Pages: 1225 - 1239
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Sep 1976
Published online: Feb 3, 2021
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Authors
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David S. Bowles, AM.ASCE
Grad. Research Asst., Utah Water Research Lab., Coll. of Engrg., Utah State Univ., Logan, Utah
J. Paul Riley, M.ASCE
Prof., Utah Water Research Lab., Coll. of Engrg., Utah State Univ., Logan, Utah
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.