Hydrologic response of streams restored with check dams in the Chiricahua Mountains, Arizona

River Research and Applications
By: , and 

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Abstract

In this study, hydrological processes are evaluated to determine impacts of stream restoration in the West Turkey Creek, Chiricahua Mountains, southeast Arizona, during a summer-monsoon season (June–October of 2013). A paired-watershed approach was used to analyze the effectiveness of check dams to mitigate high flows and impact long-term maintenance of hydrologic function. One watershed had been extensively altered by the installation of numerous small check dams over the past 30 years, and the other was untreated (control). We modified and installed a new stream-gauging mechanism developed for remote areas, to compare the water balance and calculate rainfall–runoff ratios. Results show that even 30 years after installation, most of the check dams were still functional. The watershed treated with check dams has a lower runoff response to precipitation compared with the untreated, most notably in measurements of peak flow. Concerns that downstream flows would be reduced in the treated watershed, due to storage of water behind upstream check dams, were not realized; instead, flow volumes were actually higher overall in the treated stream, even though peak flows were dampened. We surmise that check dams are a useful management tool for reducing flow velocities associated with erosion and degradation and posit they can increase baseflow in aridlands.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Hydrologic response of streams restored with check dams in the Chiricahua Mountains, Arizona
Series title River Research and Applications
DOI 10.1002/rra.2895
Volume 32
Issue 4
Year Published 2016
Language English
Publisher Wiley
Contributing office(s) Western Geographic Science Center
Description 9 p.
First page 519
Last page 527
Country United States
State Arizona
Other Geospatial Chiricahua Mountains
Online Only (Y/N) N
Additional Online Files (Y/N) N