|
| U.S. Geological Survey New Hampshire - Vermont Water Science Center | ||||||||||||
| Peak River Stages, Discharges, and Approximate Recurrence Intervals | ||||||||||||
| Provisional Data (subject to revision) for Floods of May 14-17, 2006 | ||||||||||||
| Flood Peak | Previous Maximum in Record | |||||||||||
| Station Number |
Station Name | Drainage Area |
Stage | Discharge | Date | Recurrence Interval |
Stage | Discharge | Year | Record | ||
| sq.mi. | Feet | CFS | CFSM | years | Feet | CFS | Start Year | |||||
| Piscataqua River Basin | ||||||||||||
| 1072100 | Salmon Falls R at Milton, NH | 108 |
7.27 1 |
5,260 |
48.7 |
14-May |
>50-YR |
6.70 |
4,000 |
1984 |
1969 |
|
| 1072800 | Cocheco River near Rochester, NH | 86 |
18.86 |
5,930 |
69.2 |
14-May |
25-YR |
15.51 |
3,700 |
1998 |
1995 |
|
| 1072870 | Isinglass River near Dover, NH | 74 |
19.42 |
4,150 |
56.4 |
14-May |
POR |
14.09 |
1,780 |
2005 |
2002 |
|
| 1073000 | Oyster River near Durham, NH | 12 |
8.48 |
821 |
67.9 |
14-May |
25-YR |
8.45 |
1,160 |
1996 |
1935 |
|
| 01073500 | Lamprey River near Newmarket, NH | 183 |
18.2 |
9,100 |
49.7 |
16-May |
>100-YR |
15.14 |
7,570 |
1987 |
1934 |
|
| 01073587 | Exeter River near Brentwood, NH | 64 |
12.00 |
3,320 |
52.3 |
15-May |
>100-YR* |
11.44 |
3,060 |
1996 |
1996 |
|
| Merrimack River Basin | ||||||||||||
| 01076500 | Pemigewasset River at Plymouth, NH | 622 |
14.44 |
21,300 |
34.2 |
14-May |
2-YR |
29.00 |
65,400 |
1936 |
1904 |
|
| 01078000 | Smith River near Bristol, NH | 86 |
11.41 |
4,590 |
53.5 |
14-May |
50-YR |
16.09 |
8,100 |
1936 |
1918 |
|
| 01081000 | Winnipesaukee River at Tilton, NH | 471 |
6.90 |
2,930 |
6.2 |
14-May |
5-YR* |
8.68 |
4,580 |
1984 |
1937 |
|
| 01085000 | Contoocook River at Henniker, NH | 368 |
13.45 |
10,400 |
28.3 |
15-May |
15-YR* |
21.30 |
22,200 |
1938 |
1940 |
|
| 01086000 | Warner River at Davisville, NH | 146 |
12.34 |
9,300 |
63.7 |
15-May |
>100-YR |
9.88 |
4,510 |
1953 |
1939 |
|
| 01089100 | Soucook River near Concord, NH | 82 |
14.92 |
5,660 |
69.1 |
14-May |
>100-YR |
11.59 |
2,320 |
1996 |
1988 |
|
| 01091500 | Piscataquog river near Goffstown, NH | 202 |
12.55 |
10,100 |
50.0 |
14-May |
>100-YR |
11.28 |
7,600 |
1987 |
1939 |
|
| 01092000 | Merrimack River below Manchester, NH | 3,092 |
19.87 |
74,800 |
24.2 |
15-May |
>100-YR |
35.19 |
150,000 |
1936 |
1937 |
|
| 01094000 | Souhegan River at Merrimack, NH | 171 |
9.87 |
6,140 |
35.9 |
15-May |
5-YR* |
16.20 |
16,900 |
1936 |
1909 |
|
| 010965852 | Beaver Brook at N. Pelham, NH | 48 |
14.93 |
2,750 |
57.5 |
15-May |
25-YR |
12.94 |
1,850 |
1987 |
1987 |
|
| 01100505 | Spicket River at N Salem, NH | 17 |
7.00 |
800 |
48.5 |
15-May |
POR |
5.46 |
235 |
2000 |
2000 |
|
| 01100561 | Spicket River near Methuen, MA | 62 |
12.13 |
2,080 |
33.5 |
16-May |
>100-YR* |
9.07 |
1,140 |
2001 |
2000 |
|
| Connecticut River Basin | ||||||||||||
| 01150500 | Mascoma River at Mascoma, NH | 153 |
9.64 1 |
3,980 |
26.0 |
15-May |
10-YR |
9.08 |
5,840 |
1936 |
1923 |
|
| 01152500 | Sugar River at W Claremont, NH | 269 |
7.30 |
6,580 |
24.5 |
15-May |
5-YR |
11.80 |
14,000 |
1936 |
1928 |
|
| Stations with new record stage and discharge | ||||||||||||
| 1Peak data from New Hampshire Department of Environmental Services, Dam Bureau | ||||||||||||
| *Recurrence interval estimates obtained from FEMA Flood Insurance Study reports | ||||||||||||
CFS |
Cubic feet per second | |||||||||||
CFSM |
Cubic feet per second per square mile of drainage area | |||||||||||
FEMA |
Federal Emergency Management Agency | |||||||||||
POR |
Period of record is less than 10 years, recurrence interval not determined | |||||||||||
| Recurrence Interval = average time interval between occurrences of a hydrological event in years | ||||||||||||
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