Erosion and Sediment Pollution Control Program Manual.pdf

TABLE 5.9
5-Minute through 24-Hour Rainfall Depths for Region 5
Rainfall Depth (in)
Time of
100 500
Concentration 1 year 2 year 5 year 10 year 25 year 50 year year year
5 min 0.37 0.45 0.52 0.58 0.68 0.75 0.83 -
10 min 0.58 0.69 0.81 0.90 1.04 1.15 1.26 -
15 min 0.71 0.85 1.00 1.11 1.29 1.42 1.56 -
30 min 0.94 1.14 1.37 1.56 1.82 2.04 2.27 -
60 min 1.17 1.42 1.76 2.03 2.39 2.69 3.04 -
2 hr 1.39 1.69 2.12 2.46 2.93 3.34 3.90 -
3 hr 1.53 1.86 2.33 2.71 3.25 3.75 4.34 -
6 hr 1.91 2.31 2.91 3.40 4.12 4.70 5.34 -
12 hr 2.37 2.86 3.56 4.20 5.15 5.96 6.86 -
24 hr 2.83 3.40 4.22 4.95 6.10 7.16 8.43 12.40
Adapted from Appendix A of PennDOT Publication 584 (2008 Edition)
Figure 5.12
Rainfall Intensity for 1-year through 100-year Storms for Region 5
Adapted from Appendix A of PennDOT Publication 584 (2008 Edition)
363-2134-008 / March 31, 2012 / Page 122