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 5 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]
CTW404 25.72 5,271 5,951 25.72 4,612 5,469 24-hour 5,271 24-hour 5,951
CTW410 1.48 852 931 1.48 1,107 1,235 6-hour 1,107 6-hour 1,235
CTW412 2.87 1,295 1,711 2.87 1,661 2,214 6-hour 1,661 6-hour 2,214
CTW418 21.49 2,766 2,817 21.55 2,684 2,831 24-hour 2,766 6-hour 2,831
CTW422 23.69 2,842 3,320 23.75 2,609 2,958 24-hour 2,842 24-hour 3,320
CTW430 20.12 3,900 3,863 20.18 3,980 4,049 6-hour 3,980 6-hour 4,049
CTW431 2.78 1,160 1,180 2.75 1,408 1,443 6-hour 1,408 6-hour 1,443
CTW432 1.90 770 769 1.87 976 996 6-hour 976 6-hour 996
CTW434 15.61 3,912 3,821 15.61 4,103 4,176 6-hour 4,103 6-hour 4,176
CTW440 7.60 2,556 2,586 7.40 2,872 3,006 6-hour 2,872 6-hour 3,006
CTW442 4.67 1,417 1,330 4.90 1,793 1,738 6-hour 1,793 6-hour 1,738
CTW444 7.49 2,616 2,641 7.29 2,931 3,064 6-hour 2,931 6-hour 3,064
CTW446 1.04 475 488 1.01 634 664 6-hour 634 6-hour 664
CTW450 7.59 2,832 2,877 7.62 3,229 3,391 6-hour 3,229 6-hour 3,391
CTW452 4.29 1,465 1,389 4.52 1,841 1,787 6-hour 1,841 6-hour 1,787
CTW454 3.52 1,564 1,504 3.52 1,811 1,758 6-hour 1,811 6-hour 1,758
CTW456 3.16 1,517 1,464 3.16 1,736 1,698 6-hour 1,736 6-hour 1,698
CTW458 2.99 1,479 1,435 2.99 1,686 1,658 6-hour 1,686 6-hour 1,658
CTW462 4.02 2,130 2,355 4.05 3,039 3,373 6-hour 3,039 6-hour 3,373
CTW478 0.79 351 357 0.85 422 429 6-hour 422 6-hour 429
CTW480 10.62 2,780 2,882 11.78 3,071 3,279 6-hour 3,071 6-hour 3,279
CTW482 3.88 1,050 1,032 5.04 1,655 1,553 6-hour 1,655 6-hour 1,553
CTW484 5.99 2,046 1,902 5.99 2,286 2,213 6-hour 2,286 6-hour 2,213
CTW485 5.64 1,937 1,727 5.64 2,200 2,060 6-hour 2,200 6-hour 2,060
CWI500 222.69 23,146 3,318 224.56 13,179 17,232 24-hour 23,146 6-hour 17,232
CWI502 201.44 21,379 26,281 202.35 12,654 16,474 24-hour 21,379 24-hour 26,281
CWI504 164.40 17,199 21,107 164.43 11,356 14,452 24-hour 17,199 24-hour 21,107
CWI506 12.35 2,340 1,702 13.10 2,075 2,759 24-hour 2,340 6-hour 2,759
CWI508 41.34 7,402 7,988 42.42 6,228 6,914 24-hour 7,402 24-hour 7,988
CWI510 35.84 6,176 6,728 36.72 5,284 5,913 24-hour 6,176 24-hour 6,728
CWI512 35.64 7,194 7,664 36.18 6,187 6,857 24-hour 7,194 24-hour 7,664
CWI514 30.62 7,064 7,416 30.56 6,311 6,941 24-hour 7,064 24-hour 7,416
CWI516 34.29 7,374 7,745 34.83 6,473 7,122 24-hour 7,374 24-hour 7,745
CWI518 5.00 1,014 1,316 5.54 1,019 1,402 6-hour 1,019 6-hour 1,402
CWI524 1.51 712 734 1.60 940 978 6-hour 940 6-hour 978
CWI525 8.92 1,614 1,802 10.23 1,695 1,778 6-hour 1,695 24-hour 1,802
CWI526 3.49 418 435 4.10 436 506 6-hour 436 6-hour 506
* 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.