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 23, 2023 01:30 pm Gate 1 Gate 2 Gate 3 Gate 4 Gate 5 Gate 6 Gate 7 Gate 8
  1.4 1.4 1.4 1.4 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 05:15 pm 383.27 1.0 1,207       28.02  
Mar-23 04:15 pm 383.33 1.0 1,234 3.85 1,515 1,267 28.02 48.2
Mar-23 03:15 pm 383.39 1.0 1,260 3.85 1,515 1,322 28.01 48.6
Mar-23 02:15 pm 383.50 1.0 1,308 3.83 1,502 1,411 28.00 48.6
Mar-23 01:15 pm 383.61 1.0 1,355 3.58 1,325 1,516 28.00 47.3
Mar-23 12:15 pm 383.57 1.0 1,338 3.57 1,317 1,505 28.00 45.0
Mar-23 11:15 am 383.52 1.0 1,316 3.56 1,310 1,484 28.00 43.7
Mar-23 10:15 am 383.48 1.0 1,299 3.57 1,317 1,472 28.00 42.8
Mar-23 09:15 am 383.44 1.0 1,281 3.56 1,310 1,459 28.00 41.4
Mar-23 08:15 am 383.41 1.0 1,268 3.56 1,310 1,445 28.00 41.0
Mar-23 07:15 am 383.38 1.0 1,255 3.56 1,310 1,432 28.00 41.0
Mar-23 06:15 am 383.35 1.0 1,242 3.54 1,296 1,416 28.00 41.4
Mar-23 05:15 am 383.32 1.0 1,229 3.54 1,296 1,402 28.00 41.4
Mar-23 04:15 am 383.29 1.0 1,216 3.52 1,282 1,380 28.00 41.9
Mar-23 03:15 am 383.26 1.0 1,203 3.52 1,282 1,350 28.00 42.3
Mar-23 02:15 am 383.24 1.0 1,194 3.52 1,282 1,330 28.00 42.8
Mar-23 01:15 am 383.22 1.0 1,186 3.51 1,275 1,302 28.00 43.2
Mar-23 12:15 am 383.20 1.0 1,177 3.50 1,268 1,259 28.00 44.1
Mar-22 11:15 pm 383.18 1.0 1,168 3.50 1,268 1,199 28.00 45.0
Mar-22 10:15 pm 383.17 1.0 1,164 3.50 1,268 1,124 28.00 45.9
Mar-22 09:15 pm 383.17 1.0 1,164 3.49 1,262 1,032 28.00 47.7
Mar-22 08:15 pm 383.17 1.0 1,164 3.50 1,268 930 28.00 50.4
Mar-22 07:15 pm 383.18 1.0 1,168 3.50 1,268 940 28.00 55.4
Mar-22 06:15 pm 383.21 1.0 1,181 3.51 1,275 969 28.00 61.7
Mar-22 05:15 pm 383.26 1.0 1,203 3.53 1,289 1,035 28.00 65.7
Maximum 24 Hour Drawdown Rate (10 feet/day): 609 cfs + Inflow (1,267 cfs) = 1,876 cfs
Report Generated March 23, 2023 05:25 pm