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I 58 I Table 12. Bankfull Hydraulic Geometry for the Grand Valley Reach I -------------------------------------------------------------------------------------------------------------------- River Mile A (m2) w (m) h (m) 't (1) 't* (2) --------------------------------------------------------------------------------------------------------------------- I 185 571 249 2.29 56.4 0.059 184 318 101 3.15 77.4 0.081 183 253 101 2.51 62.5 0.065 I 182 249 102 2.43 63.7 0.066 181 318 97 3.27 90.4 0.095 180 383 99 3.85 101.0 0.106 I 179 321 102 3.14 98.0 0.103 178 246 82 2.99 85.3 0.089 177 226 76 2.97 61.7 0.065 I 176 296 143 2.07 54.0 0.057 175 317 213 1.50 47.4 0.050 174 317 147 2.16 68.1 0.071 I 173 284 133 2.13 49.2 0.052 172 391 223 1.75 47.6 0.050 171 274 142 1.93 74.8 0.078 I 170 409 128 3.19 98.0 0.103 169 547 254 2.15 36.9 0.039 I 168 464 108 4.31 48.8 0.051 167 438 158 2.77 53.4 0.056 166 364 107 3.40 65.5 0.069 I 165 713 303 2.34 37.8 0.040 164 549 259 2.12 41.6 0.044 163 430 159 2.70 52.7 0.055 I 162 430 118 3.64 71.3 0.075 161 427 179 2.39 49.6 0.052 160 421 145 2.90 50.1 0.053 I 159 418 150 2.78 62.6 0.066 158 609 162 3.76 75.3 0.079 157 591 141 4.18 39.0 0.041 I 156 494 219 2.26 37.2 0.039 155 518 166 3.12 54.0 0.057 154 762 176 4.33 74.9 0.079 I 153 425 226 1.89 45.5 0.048 --------------------------------------------------------------------------------------------------------------------- I (1) 't computed using mean slope for one mile above and below site (2) 't* computed assuming Dso = 59 mm I I I