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NEW JERSEY 24 HOUR RAINFALL FREQUENCY DATA
Chapter 2 Estimating Runoff and Peak Discharges Part 650
Engineering Field Handbook
NJ Supplement
October 2008
| County |
1 year |
2 year |
5 year |
10 year |
25 year |
50 year |
100 year |
| Atlantic |
2.72 |
3.31 |
4.30 |
5.16 |
6.46 |
7.61 |
8.90 |
| Bergen |
2.75 |
3.33 |
4.26 |
5.06 |
6.25 |
7.29 |
8.43 |
| Burlington |
2.77 |
3.36 |
4.34 |
5.18 |
6.45 |
7.56 |
8.81 |
| Camden |
2.73 |
3.31 |
4.25 |
5.06 |
6.28 |
7.33 |
8.51 |
| Cape May |
2.68 |
3.27 |
4.24 |
5.08 |
6.37 |
7.50 |
8.77 |
| Cumberland |
2.69 |
3.27 |
4.25 |
5.09 |
6.37 |
7.50 |
8.77 |
| Essex |
2.84 |
3.44 |
4.40 |
5.22 |
6.44 |
7.50 |
8.67 |
| Gloucester |
2.71 |
3.29 |
4.23 |
5.04 |
6.27 |
7.34 |
8.52 |
| Hudson |
2.74 |
3.31 |
4.24 |
5.02 |
6.18 |
7.19 |
8.30 |
| Hunterdon |
2.80 |
3.38 |
4.26 |
5.00 |
6.09 |
7.02 |
8.03 |
| Mercer |
2.74 |
3.31 |
4.23 |
5.02 |
6.20 |
7.21 |
8.35 |
| Middlesex |
2.76 |
3.35 |
4.30 |
5.12 |
6.36 |
7.43 |
8.63 |
| Monmouth |
2.79 |
3.38 |
4.37 |
5.23 |
6.52 |
7.66 |
8.93 |
| Morris |
2.94
|
3.54 |
4.46 |
5.23 |
6.36 |
7.31 |
8.35 |
| Ocean |
2.81 |
3.42 |
4.45 |
5.33 |
6.68 |
7.87 |
9.20 |
| Passaic |
2.87 |
3.47 |
4.42 |
5.24 |
6.45 |
7.49 |
8.64 |
| Salem |
2.69 |
3.26 |
4.20 |
5.01 |
6.23 |
7.29 |
8.47 |
| Somerset |
2.77 |
3.34 |
4.25 |
5.02 |
6.17 |
7.16 |
8.24 |
| Sussex |
2.68 |
3.22 |
4.02 |
4.70 |
5.72 |
6.60 |
7.58 |
| Union |
2.79 |
3.38 |
4.34 |
5.17 |
6.41 |
7.48 |
8.68 |
| Warren |
2.78 |
3.34 |
4.18 |
4.89 |
5.93 |
6.83 |
7.82 |
- Notes: The average point rainfall amounts listed above were developed from
data contained in NOAA Atlas 14 Volume 2.
Point rainfall estimates for specific locations may be obtained from the
Precipitation Frequency Data Server located at
http://hdsc.nws.noaa.gov.
For most hydrologic design procedures, the rainfall amounts listed above may
be rounded to the nearest tenth of an inch.
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Last Modified:
July 14, 2011
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