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<br /> Table 8. Bed-malerial, shear-stress, and flow-duration componenls determined for sites in central Arizona
<br /> [lb/W. pound per foot squared: s, seconds; N/A, not available; ---, no data]
<br /> Median diameter Ratio of shear
<br /> (dso) stress to
<br /> Critical critical
<br /> Shear shear shear stress
<br />. Site stress stress to'tc Estimated Vege-
<br /> num- Vegetation MiIIi. '0 'c (dimen. flow duration tation
<br /> ber type meters Feet (lblft2) (lb/ft2) sionless) (5) removed
<br /> 1a Brush ..,............ 110 0.36 0.5\ 1.40 0,36 (') No
<br /> Ib Brush ,..,....,..,.., \10 .36 1.07 1.40 ,76 No
<br /> Ie SaUcedar ....."... \10 .36 1.54 \.40 1.10 \4,400 No
<br /> 2a Brush ..,......,..... 88 .29 ,53 1.12 .47 No
<br /> 2b Brush ............... 88 ,29 ,59 1.12 .53 No
<br /> Do, 88 .29 ,59 1.12 ,53 No
<br /> 3 Brush ............... 'N/A 'N/A .45 No
<br /> 4 Salteedar ........., 85 ,28 ,97 1.08 ,90 No
<br /> 5a Brush ............... 88 .29 1.27 1.12 1.13 3,600 No
<br /> Saltcedar ,........, 88 ,29 1.27 1.12 1.13 3,600 No
<br /> 5b Sa1tcedar .......... 88 ,29 ,83 1.12 ,74 No
<br /> Palo verde ........ 88 ,29 ,83 1.\2 ,74 No
<br /> 6 Brush ............... 94 .3\ 1.73 1.19 1.45 \4,400 No
<br /> Willow............. 94 .31 1.73 1.19 1.45 \4,400 No
<br /> 7 Brush ..............' 100 .33 2,02 1.27 1.59 3,600 Yes3
<br /> Palo verde ........ 100 .33 2.02 1.27 1.59 3,600 No
<br /> 8 Brush .......,....... \50 ,49 2.68 1.90 1.4\ 5,400 Yes3
<br /> Willow............. 150 ,49 2.68 1.90 1.4\ 5,400 No
<br /> 9. Brush ............... 1.0 ,003 1.62 ,03 54 3,600 Yes4
<br /> Willow............. 1.0 ,003 1.62 ,03 54 3,600 No
<br /> 9b Willow............. 1.0 ,003 1.19 ,03 40 3,600 Yes4
<br /> 9c Brush............... 1.0 ,003 .88 ,03 29 3,600 No
<br /> Willow............. 1.0 ,003 .88 ,03 29 3,600 No
<br /> 10 Willow............. 400 1.3 3.87 5,08 .76 No
<br /> 11 Brush ............... 2\ ,07 2.53 .27 9.4 7,200 No
<br /> Mesquite .......... 2\ ,07 .46 .27 1.7 7,200 No
<br /> 12 Willow............. 30 ,10 1.52 ,38 4,0 3,600 No
<br /> 13 Brush ............... 'N/A 'N/A 1.6\ No
<br /> \4 Brush ............... 120 ,39 3.25 1.52 2.14 7,200 No
<br /> Willow....,........ 120 ,39 1.74 1.52 .80 No
<br /> \5 Brush ............... 100 .33 1.90 1.27 1.50 \,800 No
<br /> Willow............. 100 .33 1.90 1.27 1.50 \,800 No
<br /> 16 Brush ..........,.... 150 .49 2,17 1.90 1.14 5,400 Yes3
<br /> 17 Brush ,.............. 49 .\6 1.52 .62 2.45 900 No
<br /> Palo verde........ 49 .16 1.52 ,62 2.45 900 No
<br /> \8 Brush ......,....,.., 130 .43 2,98 1.65 1.8\ 5,400 No
<br />, \9a Willow............. ,6 .002 1.09 ,02 54 3,600 Yes4
<br /> 19b Saltcedar .......... ,6 .002 ,62 .02 31 3,600 Yes4
<br /> ] Removal is not considered possible, and flow duration not estimated if ratio of shear stress to critical shear stress is less than I,
<br /> 2Channel boundaries are partially composed of soil cement or firm earth and are considered stahle.
<br /> 30bliterated.
<br /> 4Scoured.
<br /> Data Collection and Analysis 19
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