Phase A - Alternatives Analysis Report - Urban Drainage and Flood ...

Identification#ElementTypeLocationPHASE A – ALTERNATIVES ANALYSIS REPORTMajor Drainageway Planning Update for Hidden Lake-Bates LakeTable B-3Peak Flow SummaryTributary2-Year Flow 5-Year Flow 10-Year Flow 25-Year Flow 50-Year Flow 100-Year FlowDrainage Area(acres) (mi 2 ) (cfs) (cfs) (cfs) (cfs) (cfs) (cfs)H1 Sub-basin 111 0.174 58 126 151 238 286 340H2 Sub-basin 50 0.078 21 55 71 118 142 170H3 Sub-basin 157 0.246 97 195 232 354 419 505H4 Sub-basin 121 0.189 86 170 210 325 387 454H5 Sub-basin 111 0.174 69 140 171 268 320 376H6 Sub-basin 83 0.130 32 61 72 115 136 164H7 Sub-basin 96 0.149 38 91 111 179 215 261H8 Sub-basin 90 0.141 53 110 134 210 252 296H9 Sub-basin 118 0.185 118 203 244 357 419 484H10 Sub-basin 116 0.182 97 186 225 338 400 472H11 Sub-basin 156 0.244 445 692 826 1,146 1,318 1,492H12 Sub-basin 98 0.153 70 141 173 267 317 374H13 Sub-basin 58 0.091 33 67 80 123 146 176H14 Sub-basin 99 0.155 46 93 114 186 224 271H15 Sub-basin 147 0.229 133 218 255 365 426 494H16 Sub-basin 83 0.129 115 174 203 282 329 385B1 Sub-basin 82 0.128 29 55 66 104 124 149B2 Sub-basin 110 0.172 79 166 205 315 385 456B3 Sub-basin 121 0.189 160 257 302 424 492 567B4 Sub-basin 105 0.165 103 173 207 300 352 405B5 Sub-basin 49 0.077 34 53 60 87 101 119B6 Sub-basin 97 0.151 76 139 163 243 288 338B7 Sub-basin 165 0.258 117 214 255 384 454 540B8 Sub-basin 29 0.046 32 47 54 76 88 103B9 Sub-basin 132 0.207 141 210 244 351 413 492C1 Sub-basin 62 0.097 21 32 41 73 90 111C2 Sub-basin 162 0.253 93 162 193 302 359 430C3 Sub-basin 93 0.145 57 97 117 182 217 257C4 Sub-basin 111 0.173 206 293 332 432 495 566C5 Sub-basin 119 0.187 88 151 188 306 373 453101 Design Pt 68th Ave & Wadsworth Blvd 161 0.252 79 180 220 355 429 507102 Design Pt 69th Ave & Pierce St. 319 0.498 173 326 405 655 827 826103 Design Pt 69th Ave & Ingalls St. 440 0.687 239 424 525 742 783 924104 Design Pt 69th Ave & Sheridan Blvd. 938 1.465 481 837 991 1,371 1,491 1,589105 Design Pt 72nd Ave & Sheridan Blvd. 186 0.290 86 169 210 344 420 511110 Design Pt Hidden Lake 1,210 1.891 665 1,049 1,256 1,878 1,951 2,323111 Design Pt Hidden Lake Outlet 1,210 1.891 43 97 130 197 239 296112 Design Pt 64th Ave & Lowell 1,366 2.135 102 204 251 388 463 545113 Design PtLowell Blvd/North of LakeSangraco 1,465 2.289 146 298 358 562 668 807114 Design Pt Jim Baker Reservoir* 83 0.129 323 641 781 1,283 1,549 1,841115 Design Pt Jim Baker Reservoir Outlet* 83 0.129 4 7 8 12 14 17116 Design Pt Lake Sangraco 1,612 2.519 281 517 616 931 1,100 1,306117 Design Pt Lake Sangraco Outlet 1,612 2.519 97 179 217 363 442 553