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 April 23, 2024 07:00 am Gate 1 Gate 2 Gate 3 Gate 4 Gate 5 Gate 6 Gate 7 Gate 8
  1.0 1.0 1.0 1.0 8.0 8.0    
Date Time
(Eastern)
Pool
(ft)
Storage
(%)
Storage
(ac-ft)
Tailwater
(ft)
Flow
(cfs)
Inflow
(cfs)
Precip
(in)
Air Temp
(F)
Apr-23 01:15 pm 382.87 1.5 1,034       33.96  
Apr-23 12:15 pm       3.17 1,044     70.7
Apr-23 11:15 am 382.91 1.5 1,051 3.18 1,051 961 33.96 67.5
Apr-23 10:15 am 382.93 1.6 1,060 3.18 1,051 954 33.96 62.1
Apr-23 09:15 am 382.94 1.6 1,064 3.18 1,051 949 33.96 51.8
Apr-23 08:15 am 382.96 1.6 1,073 3.19 1,058 944 33.96 39.2
Apr-23 07:15 am 382.98 1.6 1,081 3.19 1,058 939 33.96 32.4
Apr-23 06:15 am 383.00 1.6 1,090 3.19 1,058 943 33.96 32.0
Apr-23 05:15 am 383.02 1.6 1,099 3.20 1,065 939 33.96 32.4
Apr-23 04:15 am 383.05 1.6 1,112 3.21 1,071 953 33.96 33.3
Apr-23 03:15 am 383.07 1.6 1,120 3.21 1,071 949 33.96 34.7
Apr-23 02:15 am 383.10 1.7 1,134 3.22 1,078 962 33.96 36.0
Apr-23 01:15 am 383.13 1.7 1,147 3.23 1,085 967 33.96 37.8
Apr-23 12:15 am 383.15 1.7 1,155 3.24 1,091 954 33.96 40.1
Apr-22 11:15 pm 383.18 1.7 1,168 3.24 1,091 968 33.96 42.8
Apr-22 10:15 pm 383.20 1.7 1,177 3.25 1,098 965 33.96 46.4
Apr-22 09:15 pm 383.23 1.7 1,190 3.25 1,098 971 33.96 50.9
Apr-22 08:15 pm 383.25 1.8 1,199 3.27 1,111 968 33.96 56.7
Apr-22 07:15 pm 383.28 1.8 1,212 3.27 1,111 974 33.96 62.6
Apr-22 06:15 pm 383.32 1.8 1,229 3.28 1,118 980 33.96 65.7
Apr-22 05:15 pm 383.34 1.8 1,238 3.30 1,131 969 33.96 69.3
Apr-22 04:15 pm 383.37 1.8 1,251 3.31 1,138 966 33.96 67.1
Apr-22 03:15 pm 383.40 1.8 1,264 3.31 1,138 971 33.96 63.5
Apr-22 02:15 pm 383.43 1.9 1,277 3.32 1,145 977 33.96 60.3
Apr-22 01:15 pm 383.46 1.9 1,290 3.33 1,152 966 33.96 58.1
Maximum 24 Hour Drawdown Rate (10 feet/day): 521 cfs + Inflow (961 cfs) = 1,482 cfs
Report Generated April 23, 2024 02:16 pm