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<br />Amount of vegetation <br />(n4) <br /> <br />I--' <br />'" <br /> <br />Small <br /> <br />0.001-0.010 <br /> <br />Dense growth of flexible turf grass, such as Bermuda, <br />or weeds growing where the average depth of flow is <br />at least two times the height of the vegetation; or <br />supple tree seedlings such as willow, cottonwood, <br />arrowweed, or saltcedar growing where the average <br />depth of flow is at least three times the height of <br />the vegetation. . <br /> <br />Medium <br /> <br />0.011-0.025 <br /> <br />Turf grass growing where the average depth of flow is <br />from one to two times the height of the vegetation; <br />or moderately dense stemmy grass, weeds, or tree <br />seedlings growing where the average depth of flow <br />is from two to three times the height of the vege- <br />tation; brushy, moderately dense vegetation, <br />similar to 1- to 2-year-old willow trees in the <br />dormant season. <br /> <br />Large <br /> <br />Very large <br /> <br />0.025-0.050 <br /> <br />Turf grass growing where the average depth of flow is <br />about equal to the height of vegetation; or 8- to <br />10-year-old willow or cottonwood trees intergrown <br />with some weeds and brush (none of the vegetation <br />in foliage) where the hydraulic radius exceeds 2 ft; <br />or mature row crops such as small vegetables; or <br />mature field crops where depth of flow is at least <br />twice the height of the vegetation. <br /> <br />0.050-0.100 <br /> <br />Turf grass growing where the average depth of flow is <br />less than half the height of the vegetation; or <br />moderate to dense brush; or heavy stand of timber <br />with few down trees and little undergrowth with <br />depth of flow below branches; or mature field crops <br />where depth of flow is less than height of the <br />vegetation. <br /> <br />Extreme <br /> <br />0.100-0.200 <br /> <br />Dense bushy willow, mesquite, and saltcedar (all veg- <br />etation in full foliage); or heavy stand of timber, <br />few down trees, depth of flow reaching branches. <br /> <br />Degree of meander (m) <br /> <br />Not applicable. <br /> <br />l.O <br />