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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 May 12, 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)
May-13 05:30 am 27.53 0.2 13 1.82 54 56 25.09 51.2
May-13 04:30 am 27.54 0.2 13 1.83 56 57 25.09 51.1
May-13 03:30 am 27.54 0.2 13 1.84 57 58 25.09 52.1
May-13 02:30 am 27.54 0.2 13 1.84 57 59 25.09 52.5
May-13 01:30 am 27.56 0.2 13 1.85 59 60 25.09 53.7
May-13 12:30 am 27.56 0.2 13 1.85 59 61 25.09 53.8
May-12 11:30 pm 27.56 0.2 13 1.86 60 62 25.09 56.4
May-12 10:30 pm 27.58 0.2 14 1.87 62 63 25.09 58.7
May-12 09:30 pm 27.58 0.2 14 1.87 62 64 25.09 62.3
May-12 08:30 pm 27.58 0.2 14 1.88 63 65 25.09 63.2
May-12 07:30 pm 27.59 0.2 14 1.89 65 65 25.09 69.4
May-12 06:30 pm 27.59 0.2 14 1.89 65 65 25.09 72.2
May-12 05:30 pm 27.59 0.2 14 1.90 66 66 25.09 74.8
May-12 04:30 pm 27.60 0.2 14 1.90 66 67 25.09 74.8
May-12 03:30 pm 27.60 0.2 14 1.90 66 68 25.09 73.0
May-12 02:30 pm 27.60 0.2 14 1.91 68 68 25.09 71.7
May-12 01:30 pm 27.62 0.2 15 1.92 69 70 25.09 69.9
May-12 12:30 pm 27.63 0.2 15 1.93 70 72 25.09 67.1
May-12 11:30 am 27.63 0.2 15 1.94 72 73 25.09 65.7
May-12 10:30 am 27.65 0.2 16 1.95 73 75 25.09 62.6
May-12 09:30 am 27.65 0.2 16 1.96 75 76 25.09 59.5
May-12 08:30 am 27.67 0.2 16 1.97 76 78 25.09 54.2
May-12 07:30 am 27.68 0.2 16 1.98 78 80 25.09 47.4
May-12 06:30 am 27.68 0.2 16 1.99 79 82 25.09 40.5
May-12 05:30 am 27.70 0.2 17 2.00 81 84 25.09 38.7
Maximum 24 Hour Drawdown Rate (10 feet/day): 6 cfs + Inflow (56 cfs) = 63 cfs
Report Generated May 13, 2025 05:52 am