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Comparison of Synthetic Design Storms with Observed Storms in Southern Arizona
Publisher: American Society of Civil Engineers
Abstract: Historical storms with a 24-h rainfall depth exceeding 50.8 mm (2 in.) recorded in southern Arizona were compared with design storms developed both locally and by the USDA Soil Conservation Service (SCS). This study aims ...
Curve Number Determination Methods and Uncertainty in Hydrologic Soil Groups from Semiarid Watershed Data
Publisher: American Society of Civil Engineers
Abstract: Four curve number (CN) determination methods are evaluated from 16 watersheds in the southwestern U.S. using 1,284 events that satisfy rainfall and runoff criteria. The use of ordered pairs versus natural pairs of rainfall ...
Estimating an Impedance-to-Flow Parameter for Flood Peak Prediction in Semiarid Watersheds
Publisher: American Society of Civil Engineers
Abstract: The time of concentration equation used in Pima County, Arizona, includes a hydrologic parameter representing the impedance to flow for peak discharge estimation on small [typically less than
Quantification of Curve Numbers for Arid Watersheds
Publisher: American Society of Civil Engineers
Abstract: Although the curve number (CN) method has been widely used in rainfall and runoff models, the physical interpretation of the CN method is still challenging, for instance how to estimate the potential maximum retention. ...