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New England District Corps of Engineers Projects September 13, 2026 04:30 PM |
| Legend: | Pool >50% Full | Spillway Discharge (pool stage > spillway) |
| Storage | Flow | Rainfall | Pool | |||||||||||
| Project | Drain. Area ( mi2 ) |
Date/Time | Pool (ft) |
6 Hr Change (ft) |
24 Hr Pred. Stage (ft) |
% | Cap. Avail. per Drain. Area (in) |
Outflow (cfs) |
Inflow (cfs) |
24hr (in) |
48hr (in) |
7-Day (in) |
Normal | Spillway |
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MERRIMACK RIVER BASIN Basin Regulator: Margaret DiGiorno |
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| Franklin Falls Dam | 1000 | 13 SEP 03:30 pm | 306.95 | -.03 | n/a | 0 | 2.82 | 643 | n/a | .40 | .40 | .88 | 307 | 389 |
| Blackwater Dam | 128 | 13 SEP 03:30 pm | 515.76 | .28 | 516.2 | 0 | 6.74 | 36 | 38 | 1.49 | 1.49 | 2.00 | 516 | 566 |
| Edward Macdowell Dam | 44 | 13 SEP 04:15 pm | 911.26 | .02 | 911.4 | 1 | 5.37 | 46 | 56 | .50 | .50 | .77 | 911.5 | 946 |
| Hopkinton Dam | 426 | 13 SEP 04:15 pm | 380.36 | .04 | n/a | 0 | 6.50 | n/a | n/a | 1.29 | 1.29 | 1.58 | 380 | 416 |
| Everett Dam | 64 | 13 SEP 04:15 pm | 339.18 | .03 | 339.3 | 0 | 6.80 | 5 | 9 | .85 | .85 | .97 | 340.5 | 418 |
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New England District Corps of Engineers River Gages September 13, 2026 04:29 PM |
| Legend: | Warning Stage | Flood Stage |
| Gage | Drainage Area ( mi2 ) |
Date/Time | Stage (ft) |
Q (cfs) |
6 Hour Change Stage (ft) |
6 Hour Change Flow (cfs) |
CSM Q/DA |
Warning Flow |
Warning Stage |
Flood Flow |
Flood Stage |
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MERRIMACK RIVER BASIN Basin Regulator: Margaret DiGiorno |
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| E.B. Pemigewasset River @ Lincoln, Nh | 115 | 13 SEP 04:15 pm | 3.75 | 86 | .10 | 17 | .7 | 2285 | n/a | 2925 | 10 | |||
| Pemigewasset River @ Woodstock, Nh | 193 | 13 SEP 03:30 pm | 2.39 | 123 | .10 | 24 | .6 | 4830 | 7 | 9750 | 9 | |||
| Pemigewasset River @ Plymouth, Nh | 622 | 13 SEP 03:30 pm | .70 | 234 | .07 | 31 | .4 | 9510 | 8 | 19500 | 13 | |||
| Baker River @ Rumney, Nh | 143 | 13 SEP 03:30 pm | .43 | 40 | .11 | 11 | .3 | 2850 | 5.3 | 7080 | 9.8 | |||
| Smith River @ Bristol, Nh | 86 | 13 SEP 03:45 pm | 1.99 | 35 | .12 | 6 | .4 | 1540 | 6.5 | 2380 | 8 | |||
| Winnipesaukee River @ Tilton, Nh | 471 | 13 SEP 03:30 pm | 2.79 | 378 | .05 | 18 | .8 | 3020 | 7 | 3460 | 7.5 | |||
| Merrimack River @ Franklin Jct, Nh | 1507 | 13 SEP 03:30 pm | 4.42 | 1,021 | .35 | 256 | .7 | 15900 | 13 | 18100 | 14 | |||
| Merrimack River @ Concord, Nh | 2385 | 13 SEP 03:30 pm | 3.30 | 2,412 | .10 | 154 | 1.0 | n/a | 10 | n/a | 13.7 | |||
| Merrimack River @ Goffs Falls, Nh | 3092 | 13 SEP 03:30 pm | 3.28 | 1,421 | .16 | 199 | .5 | 36400 | 12 | 46200 | 14 | |||
| Merrimack River @ Nashua, Nh | 3982 | 13 SEP 04:15 pm | 4.80 | n/a | .02 | n/a | n/a | n/a | 16 | n/a | 18 | |||
| Merrimack River @ Lowell, Ma | 4635 | 13 SEP 03:30 pm | 42.31 | 2,598 | .75 | 1,391 | .6 | 28500 | 49 | 45100 | 52 | |||
| Contoocook River @ Peterborough, Nh | 68 | 13 SEP 03:30 pm | 1.36 | 30 | .13 | 10 | .4 | 660 | 3.5 | 2680 | 6 | |||
| Contoocook River @ Henniker, Nh | 368 | 13 SEP 03:30 pm | 4.89 | 80 | .08 | 9 | .2 | 2050 | 9 | 5750 | 11.5 | |||
| Contoocook River @ Riverhill, Nh | 760 | 13 SEP 03:30 pm | 10.61 | 290 | .05 | 18 | .4 | n/a | 14.7 | n/a | 18 | |||
| Warner River @ Davisville, Nh | 146 | 13 SEP 03:30 pm | 3.23 | 22 | .14 | 8 | .2 | 1120 | 6.5 | 2310 | 8 | |||
| Piscataquog River @ Goffstown, Nh | 202 | 13 SEP 03:30 pm | 3.11 | 20 | .00 | 0 | .1 | 1180 | 6 | 3660 | 8.5 | |||
| Souhegan River @ Souhegan, Nh | 171 | 13 SEP 03:30 pm | 2.45 | 56 | .08 | 11 | .3 | 2260 | 6.5 | 5000 | 9 | |||
| Nashua River @ East Pepperell, Ma | 316 | 13 SEP 03:45 pm | 1.15 | 146 | .23 | 50 | .5 | 2990 | 6.5 | 4080 | 8 | |||
| Concord River @ Lowell, Ma | 400 | 13 SEP 03:30 pm | 4.11 | 117 | .37 | 70 | .3 | 2580 | 7.5 | 3190 | 8 | |||
| Shawsheen River @ Wilmington, Ma | 37 | 13 SEP 03:30 pm | 1.99 | 8 | .13 | 3 | .2 | 270 | 5 | 620 | 7 | |||
| Spicket River @ Methuen, Ma | 62 | 13 SEP 03:30 pm | 3.70 | 32 | .25 | 23 | .5 | n/a | 6.5 | n/a | 8 | |||