Drainage Overview - Maricopa County Department of Transportation

Table D.6: Summary of Peak Discharges
100-yr 24-hr Storm 100-yr 6-hr Storm
Model ID Drainage Area Exst. Cond. Fut. Cond. Drainage Area Exst. Cond. Fut. Cond.
Appendix D.6 Page 10 of 13
Controlling Storm
Exst. Cond. Fut Cond.
[mi 2 ] Q [cfs] Q [cfs] [mi 2 ] Q [cfs] Q [cfs] Storm Q [cfs] Storm Q [cfs]
SV220 0.60 797 792 0.60 1,114 1,101 6-hour 1,114 6-hour 1,101
SV230 0.85 1,276 1,261 0.85 1,582 1,580 6-hour 1,582 6-hour 1,580
SV232 3.06 2,919 3,041 3.06 2,720 2,915 24-hour 2,919 24-hour 3,041
SV236 0.59 521 527 0.59 763 760 6-hour 763 6-hour 760
SV240 3.67 2,841 3,045 3.67 2,706 3,008 24-hour 2,841 24-hour 3,045
SV242 0.09 63 63 0.09 93 94 6-hour 93 6-hour 94
SV244 0.95 435 470 0.95 576 640 6-hour 576 6-hour 640
SV246 0.16 200 197 0.16 287 285 6-hour 287 6-hour 285
SV248 1.27 771 845 1.27 944 1,058 6-hour 944 6-hour 1,058
SV250 0.12 107 104 0.12 156 157 6-hour 156 6-hour 157
SV251 0.27 204 204 0.27 313 308 6-hour 313 6-hour 308
SV252 0.15 104 108 0.15 158 162 6-hour 158 6-hour 162
SV254 0.10 99 113 0.10 150 171 6-hour 150 6-hour 171
SV256 0.06 68 79 0.06 104 121 6-hour 104 6-hour 121
SV258 0.74 669 753 0.74 888 1,018 6-hour 888 6-hour 1,018
SV260 1.26 1,154 1,091 1.26 1,404 1,354 6-hour 1,404 6-hour 1,354
SV264 1.92 1,336 1,279 1.92 1,603 1,603 6-hour 1,603 6-hour 1,603
SV264A 2.90 1,695 1,691 2.90 2,000 2,107 6-hour 2,000 6-hour 2,107
SV268 1.38 1,349 1,292 1.38 1,628 1,618 6-hour 1,628 6-hour 1,618
SV272 1.20 976 932 1.20 1,212 1,193 6-hour 1,212 6-hour 1,193
SV276 0.92 678 643 0.92 905 874 6-hour 905 6-hour 874
SV280 1.06 707 664 1.06 925 890 6-hour 925 6-hour 890
SV284 0.28 337 341 0.28 491 495 6-hour 491 6-hour 495
SV286 1.54 1,175 1,181 1.54 1,427 1,504 6-hour 1,427 6-hour 1,504
SV290 0.81 653 664 0.81 881 914 6-hour 881 6-hour 914
SV294 2.65 1,805 1,761 2.65 2,100 2,178 6-hour 2,100 6-hour 2,178
SV298 1.08 506 493 1.08 672 667 6-hour 672 6-hour 667
TW400 4.27 2,211 2,765 4.27 2,394 3,162 6-hour 2,394 6-hour 3,162
TW402 4.91 3,179 3,492 4.91 3,158 3,774 24-hour 3,179 6-hour 3,774
TW404 2.09 2,515 2,509 2.09 2,442 2,543 24-hour 2,515 6-hour 2,543
TW406 0.16 375 378 0.16 521 525 6-hour 521 6-hour 525
TW408 0.91 413 437 0.91 565 604 6-hour 565 6-hour 604
TW410 0.31 178 204 0.31 254 290 6-hour 254 6-hour 290
TW412 2.06 1,239 1,403 2.06 1,453 1,762 6-hour 1,453 6-hour 1,762
TW414 1.17 2,018 2,027 1.17 2,191 2,227 6-hour 2,191 6-hour 2,227
TW416 0.59 420 456 0.59 627 677 6-hour 627 6-hour 677
TW418 1.37 1,476 1,473 1.37 1,784 1,835 6-hour 1,784 6-hour 1,835
* Drainage areas may differ between the 24-hour and 6-hour storms: the HEC-1 hard coding was performed separately for the 24-hour and 6-hour storms.