New England District Corps of Engineers
Projects
May 13, 2025 06:22 AM
Legend: Pool >50% Full Spillway Discharge (pool stage > spillway)
  Storage Flow Rainfall Pool
Project Drain.
Area
( mi2 )
Date/Time Pool
(ft)
6 Hr Change
(ft)
24 Hr Pred.
Stage
(ft)
% Cap. Avail.
per Drain. Area
(in)
Outflow
(cfs)
Inflow
(cfs)
24hr
(in)
48hr
(in)
7-Day
(in)
Normal Spillway
NAUGATUCK RIVER BASIN
Basin Regulator: Laura Fraser
Thomaston Dam 97 13 MAY 05:30 am 9.00 -2.38 9.5 0 8.09 428 431 .00 .00 1.82 0 114
Black Rock Dam 20 13 MAY 05:30 am 27.53 -.03 27.7 0 7.79 54 56 .00 .00 1.70 27 110
Hop Brook Dam 16 13 MAY 06:15 am 19.72 -.03 n/a 1 7.75 n/a n/a .00 .00 1.69 18.5 72
Northfield Brook Dam 6 13 MAY 05:30 am 22.90 -.02 22.9 0 7.67 18 18 --- --- --- 22.5 95.5
Hancock Brook Dam 12 13 MAY 05:30 am 7.89 -.02 7.9 3 5.95 136 135 --- --- --- 7 30
East Branch Dam 9 13 MAY 05:30 am 1.32 -.05 1.9 0 8.80 20 20 --- --- --- 0 67
Hall Meadow Dam 17 13 MAY 05:30 am 9.98 -.02 9.9 4 9.05 20 18 --- --- --- 9 48


New England District Corps of Engineers
River Gages
May 13, 2025 06:20 AM
Legend: Warning Stage Flood Stage
Gage Drainage
Area
( mi2 )
Date/Time Stage
(ft)
Q
(cfs)
6 Hour
Change
Stage (ft)
6 Hour
Change
Flow (cfs)
CSM
Q/DA
Warning
Flow
Warning
Stage
Flood
Flow
Flood
Stage
NAUGATUCK RIVER BASIN
Basin Regulator: Laura Fraser
Naugatuck River @ Waterbury, Ct 174 13 MAY 05:30 am 8.16 730 -.17 -128 4.2 2190 10 5250 12.8
Naugatuck River @ Beacon Falls, Ct 259 13 MAY 05:30 am 3.77 1,224 -.19 -136 4.7 3990 7 9950 10.7
Housatonic River @ Stevenson, Ct 1545 13 MAY 05:30 am 8.97 8,104 .51 579 5.2 13700 11 27200 15