| Summary: | Delaying characteristics of recession flows were evaluated from Central Arizona watersheds representing mixed conifer, ponderosa pine, pinyon juniper, grassland, and chaparral vegetation cover types, with areas ranging from 15 to over 60 square miles. Basically, slopes of individual recession hydrographs were determined and used to discriminate the influence of vegetation cover types, seasons of year, soil moisture conditions and land use. Based on an analysis of 66 summer and 45 winter flow recession hydrographs it was suggested that summer flows from grassland watersheds were different in comparison with those from ponderosa pine, pinyon juniper, and mixed conifer watersheds. Specifically, slow flow recessions were less sustained for grassland watersheds as compared to mixed conifer and ponderosa pine. No differences in winter recessions were detected among the watersheds.
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