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Table 2. Vegetation data collected for sites in central Arizona [ft. foot; %, percent; --, dimensionless; <, less than; >, greater than] Ratio of hydraulic Average Cross.section area radius to Site vegetation of flow blocked by height of PosUlow- num. height vegetation 1 Vegetation vegetation vegetation ber Vegetation type (It) (%) distribution H conditions la Brush2............................ 3 <30 Parallel 1.5 Erect Ib Brush.... ....u..... .n... 3 <30 Parallel 3.2 Prone Ie SaUcedar ............... 13 30 10 70 Parallel 1.0 Prone 2a Brush.............................. 3 30 10 70 Random .6 Erect 2b Brush....................... 2 <30 Random 1.0 Prone Brush....................... 5 <30 Random .4 Erect 3 Brush ....... ........... ........ .... 3 <30 Random 1.8 Erect 4 Saltcedar ........................ 8 30 to 70 Random .6 Erect 5a Brush.........................,.... 7 30 to 70 Parallel .9 Prone Saltcedar ........................ 15 <30 Parallel .4 Erect 5b Saltcedar ... ................. 12 <30 Parallel .3 Erect Palo verde. ................... 10 <30 Random .4 Erect 6 Brush..................... 5 <30 Random 2.6 Prone Willow.................. 18 <30 Parallel .7 Erect 7 Brush...................... 3 >70 Random 1.2 Removed Palo verde ...................... 16 <30 Random .2 Erect 8 Brush............. 7 30 to 70 Random .9 Removed Willow.......... ................ 13 <30 Random .5 Prone 9a Brush ....... ............ ........... 5 30 to 70 Random 1.4 Removed Willow........................... 18 30 to 70 Random .4 Prone 9b Willow........................". 15 30 to 70 Random .4 Removed 9c Brush... ........ .......... ......... 6 <30 Random .6 Prone Willow........,.................. 15 <30 Random .3 Erect to Willow,.......,.................. 15 30 to 70 Parallel .6 Prone II Brush.............................. 8 <30 Parallel 1.4 Prone Mesquite ........................ 16 >70 Random .2 Erect 12 Willow............,......_....... 15 <30 Random .3 Prone 13 Brush.............................. 12 >70 Random .1 Erect 14 Brush... ...... ............ ......... 5 30 to 70 Random 3.2 Prone Willow.................."....... 15 <30 Parallel .7 Erect 15 Brush.............................. 4 <30 Random 1.1 Prone Willow........"................. 20 <30 Random .2 Erect 16 Brush.............................. 4 30 to 70 Random 1.4 Removed 17 Brush.............................. 2 <30 Random .4 Prone Palo verde ...................... 8 <30 Random .1 Erect 18 Brush........,......""........... 6 <30 Parallel 2.6 Prone 19a Willow........................... 10 <30 Parallel .5 Removed 19b Saltcedar ..........,.."......... 7 <30 Parallel .4 Removed I Estimated on the basis ofpreftow-vegetation conditions. 2Brush is used as the generic tenn for sage brush. arrowv..eed, creosote, or burro bush. Physical attributes for these types of brush are assumed 10 be similar and are classified as one type. 8 Method to Estimate Effects of Flow-Induced Vegetation Changes on Channel Conveyances of Streams in Central Arizona