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Black Rock Dam, Branch Brook
Black Rock Dam, Branch Brook
 Drainage Area: 20 sq. miles 
 Channel Capacity: 800 cfs 
 Storage at Spillway Crest: 7.8 in / 8,450 ac-ft  
 Normal Pool: 27 Feet 
 Gate Settings for December 11, 2025 07:00 am Gate 1 Gate 2 Gate 3 Gate 4 Gate 5 Gate 6 Gate 7 Gate 8
  3.0 0.0            
Date Time
(Eastern)		 Pool
(ft)		 Storage
(%)		 Storage
(ac-ft)		 Tailwater
(ft)		 Flow
(cfs)		 Inflow
(cfs)		 Precip
(in)		 Air Temp
(F)
Dec-12 01:30 pm 27.06 0.0 1       7.70 40.2
Dec-12 12:30 pm 27.06 0.0 1       7.70 37.5
Dec-12 11:30 am 27.06 0.0 1       7.70 31.3
Dec-12 10:30 am 27.06 0.0 1       7.70 27.5
Dec-12 09:30 am 27.06 0.0 1       7.70 25.0
Dec-12 08:30 am 27.06 0.0 1       7.70 22.5
Dec-12 07:30 am 27.06 0.0 1 1.25 2 2 7.70 19.9
Dec-12 06:30 am 27.06 0.0 1 1.25 2 2 7.70 20.9
Dec-12 05:30 am 27.06 0.0 1 1.26 2 2 7.70 21.5
Dec-12 04:30 am 27.06 0.0 1 1.26 2 2 7.70 21.9
Dec-12 03:30 am 27.07 0.0 2 1.26 2 2 7.70 22.5
Dec-12 02:30 am 27.07 0.0 2 1.26 2 2 7.70 23.4
Dec-12 01:30 am 27.07 0.0 2 1.26 2 2 7.70 31.6
Dec-12 12:30 am 27.07 0.0 2 1.26 2 2 7.70 31.7
Dec-11 11:30 pm 27.07 0.0 2 1.26 2 2 7.70 32.1
Dec-11 10:30 pm 27.07 0.0 2 1.26 2 2 7.70 32.6
Dec-11 09:30 pm 27.08 0.0 2 1.27 3 3 7.70 33.9
Dec-11 08:30 pm 27.08 0.0 2 1.27 3 3 7.70 34.4
Dec-11 07:30 pm 27.08 0.0 2 1.27 3 3 7.70 34.9
Dec-11 06:30 pm 27.08 0.0 2 1.27 3 3 7.70 35.3
Dec-11 05:30 pm 27.08 0.0 2 1.27 3 3 7.70 36.1
Dec-11 04:30 pm 27.08 0.0 2 1.27 3 2 7.70 37.4
Dec-11 03:30 pm 27.08 0.0 2 1.27 3 2 7.70  
Dec-11 02:30 pm 27.08 0.0 2 1.28 3 2 7.70 40.2
Dec-11 01:30 pm 27.08 0.0 2 1.28 3 2 7.70 39.0
Maximum 24 Hour Drawdown Rate (10 feet/day): 1 cfs + Inflow (2 cfs) = 2 cfs
Report Generated December 12, 2025 06:45 pm