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Hopkinton Dam, Contoocook River
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 21, 2025 09:00 am Gate 1 Gate 2 Gate 3 Gate 4 Gate 5 Gate 6 Gate 7 Gate 8
  3.0 3.0 3.0 3.0 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-23 01:30 am 383.69 2.0 1,390       18.10  
Mar-23 12:30 am 383.75 2.1 1,416 5.60 2,800 2,544 18.10 41.9
Mar-22 11:30 pm 383.81 2.1 1,442 5.60 2,800 2,544 18.10 43.7
Mar-22 10:30 pm       5.62 2,815   18.10 47.3
Mar-22 09:30 pm 383.91 2.1 1,486 5.64 2,831 2,567 18.10 49.5
Mar-22 08:30 pm 383.96 2.2 1,508 5.65 2,839 2,567 18.07 53.6
Mar-22 07:30 pm 384.00 2.2 1,525 5.66 2,847 2,560 18.03 59.0
Mar-22 06:30 pm 384.06 2.2 1,557 5.68 2,863 2,581 18.03 62.1
Mar-22 05:30 pm 384.12 2.3 1,589 5.70 2,879 2,640 18.03 63.0
Mar-22 04:30 pm 384.16 2.3 1,611 5.71 2,887 2,653 18.03 65.7
Mar-22 03:30 pm 384.20 2.3 1,632 5.72 2,895 2,672 18.03 65.7
Mar-22 02:30 pm 384.25 2.4 1,659 5.74 2,911 2,712 18.03 63.9
Mar-22 01:30 pm 384.30 2.4 1,686 5.74 2,911 2,722 18.03 63.0
Mar-22 12:30 pm 384.35 2.4 1,712 5.79 2,951 2,742 18.03 61.7
Mar-22 11:30 am 384.36 2.5 1,718 5.60 2,800 2,739 18.03 59.0
Mar-22 10:30 am 384.39 2.5 1,734 5.77 2,935 2,763 18.03 54.0
Mar-22 09:30 am 384.42 2.5 1,750 5.78 2,943 2,781 18.03 45.9
Mar-22 08:30 am 384.44 2.5 1,760 5.75 2,919 2,788 18.03 36.9
Mar-22 07:30 am 384.48 2.5 1,782 5.72 2,895 2,824 18.03 32.4
Mar-22 06:30 am 384.51 2.6 1,798 5.76 2,927 2,859 18.03 32.9
Mar-22 05:30 am 384.53 2.6 1,809 5.81 2,967 2,876 18.03 33.8
Mar-22 04:30 am 384.55 2.6 1,819 5.83 2,983 2,812 18.03 35.1
Mar-22 03:30 am 384.57 2.6 1,830 5.83 2,983 2,680 18.03 37.4
Mar-22 02:30 am 384.59 2.6 1,841 5.83 2,983 2,565 18.03 39.2
Mar-22 01:30 am 384.61 2.6 1,851 5.84 2,991 2,486 18.03 39.6
Maximum 24 Hour Drawdown Rate (10 feet/day): 701 cfs + Inflow (2,544 cfs) = 3,245 cfs
Report Generated March 23, 2025 05:44 am