New England District Corps of Engineers
Projects
December 08, 2025 11:47 PM
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 08 DEC 11:30 pm 5.31 -.50 7.2 0 8.10 54 59 .00 .00 .94 0 114
Black Rock Dam 20 08 DEC 11:30 pm 27.06 .00 27.1 0 7.80 2 2 .00 .00 .78 27 110
Hop Brook Dam 16 08 DEC 11:30 pm 19.20 -.01 19.2 0 7.76 11 11 .00 .00 .90 18.5 72
Northfield Brook Dam 6 08 DEC 11:30 pm 16.48 -.58 22.5 0 7.70 1 1 --- --- --- 22.5 95.5
Hancock Brook Dam 12 08 DEC 11:30 pm 7.27 -.01 7.2 2 6.01 55 54 --- --- --- 7 30
East Branch Dam 9 08 DEC 11:30 pm .51 -.07 1.9 0 8.80 8 9 --- --- --- 0 67
Hall Meadow Dam 17 08 DEC 05:30 pm 3.81 -.02 n/a 1 9.33 n/a n/a --- --- --- 9 48


New England District Corps of Engineers
River Gages
December 08, 2025 11:47 PM
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 08 DEC 11:30 pm 7.13 158 .12 37 .9 2190 10 5250 12.8
Naugatuck River @ Beacon Falls, Ct 259 08 DEC 10:30 pm 1.57 191 .02 4 .7 3990 7 9950 10.7
Housatonic River @ Stevenson, Ct 1545 08 DEC 11:30 pm 2.96 651 .51 200 .4 13700 11 27200 15