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New Hampshire County Rainfall Frequency Data
County or Area Rainfall Amounts in Inches by Frequency
| County or Area |
1 Year Inches |
2 Years Inches |
5 Years Inches |
10 Years Inches |
25 Years Inches |
50 Years Inches |
100 Years Inches |
| Belknap |
2.4 |
2.8 |
3.7 |
4.1 |
5.0 |
5.5 |
6.1 |
| Carroll - South |
2.5 |
2.9 |
3.8 |
4.3 |
5.2 |
5.5 |
6.2 |
| Carroll - North |
3.0 |
3.3 |
4.3 |
5.0 |
5.7 |
6.2 |
6.6 |
| Cheshire |
2.4 |
2.8 |
3.7 |
4.2 |
5.0 |
5.6 |
6.3 |
| Coos - South |
3.0 |
3.5 |
4.1 |
4.8 |
5.6 |
6.2 |
6.8 |
| Coos - North |
2.4 |
3.0 |
3.5 |
4.2 |
4.9 |
5.3 |
6.1 |
| Grafton |
2.4 |
2.7 |
3.6 |
4.2 |
4.9 |
5.2 |
5.9 |
| Hillsborough |
2.5 |
2.9 |
3.8 |
4.3 |
5.1 |
5.7 |
6.3 |
| Merrimack |
2.4 |
2.8 |
3.7 |
4.2 |
5.0 |
5.6 |
6.2 |
| Rockingham |
2.5 |
3.0 |
3.8 |
4.3 |
5.2 |
5.7 |
6.4 |
| Strafford |
2.5 |
3.0 |
3.8 |
4.3 |
5.1 |
5.6 |
6.3 |
| Sullivan |
2.3 |
2.7 |
3.6 |
4.1 |
4.8 |
5.3 |
6.0 |
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