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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 August 09, 2026 07:20 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)
Aug-09 08:30 am 27.22 0.1 5 1.43 9 9 38.30 71.2
Aug-09 07:30 am 27.22 0.1 5 1.43 9 9 38.30 65.3
Aug-09 06:30 am 27.22 0.1 5 1.43 9 9 38.30 63.6
Aug-09 05:30 am 27.22 0.1 5 1.43 9 10 38.30 63.7
Aug-09 04:30 am 27.22 0.1 5 1.44 10 10 38.30 64.0
Aug-09 03:30 am 27.22 0.1 5 1.44 10 9 38.30 64.5
Aug-09 02:30 am 27.22 0.1 5 1.44 10 9 38.30 65.0
Aug-09 01:30 am 27.22 0.1 5 1.44 10 9 38.30 65.7
Aug-09 12:30 am 27.22 0.1 5 1.44 10 9 38.30 66.0
Aug-08 11:30 pm 27.22 0.1 5 1.45 10 10 38.30 66.5
Aug-08 10:30 pm 27.22 0.1 5 1.45 10 10 38.30 67.3
Aug-08 09:30 pm 27.24 0.1 6 1.46 11 11 38.30 67.7
Aug-08 08:30 pm 27.24 0.1 6 1.46 11 11 38.30 69.2
Aug-08 07:30 pm 27.24 0.1 6 1.46 11 11 38.30 72.9
Aug-08 06:30 pm 27.25 0.1 6 1.48 12 12 38.30 76.7
Aug-08 05:30 pm 27.25 0.1 6 1.48 12 12 38.30 77.1
Aug-08 04:30 pm 27.26 0.1 6 1.49 13 13 38.30 74.6
Aug-08 03:30 pm 27.26 0.1 6 1.49 13 13 38.30 77.8
Aug-08 02:30 pm 27.26 0.1 6 1.49 13 13 38.30 78.4
Aug-08 01:30 pm 27.28 0.1 7 1.50 14 14 38.30 76.8
Aug-08 12:30 pm 27.28 0.1 7 1.50 14 15 38.30 75.1
Aug-08 11:30 am 27.28 0.1 7 1.50 14 15 38.30 73.8
Aug-08 10:30 am 27.28 0.1 7 1.51 15 16 38.30 72.2
Aug-08 09:30 am 27.29 0.1 7 1.52 16 17 38.30 70.9
Aug-08 08:30 am 27.29 0.1 7 1.53 17 17 38.30 69.3
Maximum 24 Hour Drawdown Rate (10 feet/day): 3 cfs + Inflow (9 cfs) = 12 cfs
Report Generated August 09, 2026 01:22 pm