Final Baseline Hydrology Report - October 2012 - Urban Drainage ...

Sanderson Gulch Major Drainageway Plan
Baseline Hydrology Report
October 2012
Table B-3 Design Storm Distribution Comparison
1972 MDP NS‐5 100‐year rainfall distribution 2012 MDP UDFCD 100‐year rainfall distribution
Point Rainfall Time Depth Curve Value Point Rainfall Time Depth Curve Value
(in/hr) (Min) (in) (in/hr) (Min) (in)
2.1 0 0 0.00 2.57 5 0.0257 0.01
10 0.13 0.06 10 0.0771 0.03
20 0.17 0.08 15 0.11822 0.046
30 0.35 0.17 20 0.2056 0.08
40 1.03 0.49 25 0.3598 0.14
50 0.27 0.13 30 0.6425 0.25
60 0.15 0.07 35 0.3598 0.14
70 0.09 0.04 40 0.2056 0.08
80 0.07 0.03 45 0.15934 0.062
90 0.07 0.03 50 0.1285 0.05
100 0.06 0.03 55 0.1028 0.04
110 0.06 0.03 60 0.1028 0.04
120 0.05 0.02 65 0.1028 0.04
70 0.0514 0.02
Total 2.50 1.19 75 0.0514 0.02
80 0.03084 0.012
85 0.03084 0.012
90 0.03084 0.012
95 0.03084 0.012
100 0.03084 0.012
105 0.03084 0.012
110 0.03084 0.012
115 0.03084 0.012
120 0.03084 0.012
Total 2.971 1.156
Appendix B ‐ Hydrologic Analysis