| Hopkinton Dam, Contoocook River | |||||||||
| Drainage Area: | 426 sq. miles | ||||||||
| Channel Capacity: | 7,000 cfs | ||||||||
| Storage at Spillway Crest: | 6.5 in / 70,100 ac-ft | ||||||||
| Normal Pool: | 380 Feet NGVD(Summer), 382 Feet NGVD(Winter) | ||||||||
| Gate Settings for March 11, 2026 08:30 am | Gate 1 | Gate 2 | Gate 3 | Gate 4 | Gate 5 | Gate 6 | Gate 7 | Gate 8 | |
| 1.2 | 1.2 | 1.2 | 1.2 | 8.0 | 8.0 | ||||
| Date Time (Eastern) |
Pool (ft) |
Storage (%) |
Storage (ac-ft) |
Tailwater (ft) |
Flow (cfs) |
Inflow (cfs) |
Precip (in) |
Air Temp (F) |
| Mar-11 06:45 pm | 384.29 | 2.4 | 1,680 | 15.23 | ||||
| Mar-11 05:45 pm | 384.23 | 2.4 | 1,648 | 4.42 | 1,913 | 1,975 | 15.23 | 54.0 |
| Mar-11 04:45 pm | 384.17 | 2.3 | 1,616 | 4.39 | 1,891 | 1,877 | 15.23 | 57.6 |
| Mar-11 03:45 pm | 384.12 | 2.3 | 1,589 | 4.39 | 1,891 | 1,754 | 15.23 | 58.5 |
| Mar-11 02:45 pm | 384.09 | 2.3 | 1,573 | 4.38 | 1,883 | 1,598 | 15.23 | 55.8 |
| Mar-11 01:45 pm | 384.09 | 2.3 | 1,573 | 4.37 | 1,876 | 1,597 | 15.23 | 54.5 |
| Mar-11 12:45 pm | 384.11 | 2.3 | 1,584 | 4.34 | 1,853 | 1,632 | 15.23 | 54.5 |
| Mar-11 11:45 am | 384.14 | 2.3 | 1,600 | 4.24 | 1,779 | 1,692 | 15.23 | 54.0 |
| Mar-11 10:45 am | 384.15 | 2.3 | 1,605 | 4.20 | 1,749 | 1,737 | 15.23 | 50.9 |
| Mar-11 09:45 am | 384.19 | 2.3 | 1,627 | 4.18 | 1,734 | 1,800 | 15.23 | 46.8 |
| Mar-11 08:45 am | 384.28 | 2.4 | 1,675 | 4.07 | 1,653 | 1,933 | 15.23 | 42.8 |
| Mar-11 07:45 am | 384.23 | 2.4 | 1,648 | 3.88 | 1,514 | 1,931 | 15.23 | 39.6 |
| Mar-11 06:45 am | 384.16 | 2.3 | 1,611 | 3.84 | 1,485 | 1,929 | 15.23 | 40.1 |
| Mar-11 05:45 am | 384.08 | 2.3 | 1,568 | 3.81 | 1,463 | 1,926 | 15.23 | 40.1 |
| Mar-11 04:45 am | 384.00 | 2.2 | 1,525 | 3.78 | 1,441 | 1,912 | 15.23 | 39.6 |
| Mar-11 03:45 am | 383.92 | 2.2 | 1,490 | 3.75 | 1,420 | 1,907 | 15.23 | 39.6 |
| Mar-11 02:45 am | 383.82 | 2.1 | 1,447 | 3.72 | 1,398 | 1,877 | 15.23 | 39.6 |
| Mar-11 01:45 am | 383.73 | 2.0 | 1,408 | 3.69 | 1,376 | 1,840 | 15.23 | 41.0 |
| Mar-11 12:45 am | 383.62 | 2.0 | 1,360 | 3.66 | 1,355 | 1,787 | 15.23 | 42.8 |
| Mar-10 11:45 pm | 383.50 | 1.9 | 1,308 | 3.61 | 1,319 | 1,712 | 15.23 | 44.6 |
| Mar-10 10:45 pm | 383.39 | 1.8 | 1,260 | 3.59 | 1,305 | 1,630 | 15.23 | 47.3 |
| Mar-10 09:45 pm | 383.29 | 1.8 | 1,216 | 3.57 | 1,290 | 1,535 | 15.23 | 50.4 |
| Mar-10 08:45 pm | 383.20 | 1.7 | 1,177 | 3.55 | 1,276 | 1,425 | 15.23 | 54.9 |
| Mar-10 07:45 pm | 383.13 | 1.7 | 1,147 | 3.53 | 1,262 | 1,309 | 15.23 | 61.7 |
| Mar-10 06:45 pm | 383.06 | 1.6 | 1,116 | 3.53 | 1,262 | 1,171 | 15.23 | 70.2 |
| Maximum 24 Hour Drawdown Rate (10 feet/day): 847 cfs + Inflow (1,975 cfs) = 2,822 cfs | ||||||||
| Report Generated March 11, 2026 06:53 pm | ||||||||