HALL MEADOW BROOK DAM

HALL MEADOW BROOK - Naugatuck River Watershed - Torrington, CT

Owned and Maintained by the State of Connecticut, Dept. of Environmental Protection, Water and Related Resources Unit - (860) 566-7244

DRAINAGE AREA: 17.2 sq.mi.

PERMANENT POOL: 9 Feet above Gate Invert

DAM
Type: Rolled earth fill
Length: 1,200 Feet
Top Elev = 917.0 Ft NGVD (67 Ft)

FLOOD CONTROL STORAGE
Capacity: 8,620 Acre Feet
9.4 Inches of Runoff
Area at Crest: 372 Acres

CONTROL WORKS
Type: Circular Concrete Conduit
Size: 4' diameter
Length: 315 Feet
Drop-Gate Invert Elev = 842.0 Ft NGVD
Reservoir Invert = 850.0 Ft-NGVD
Capacity (Full Pool): 455 cfs
Gate (Type): Ungated
Channel Capacity = 500 cfs
Stilling Basin: Bedrock channel

SPILLWAY
Type: Chute Spillway/Ogee Weir
Length: 100 Feet
Elev = 898.0 Ft NGVD (48 Ft)

SPILLWAY DESIGN FLOOD

Original Design Criteria:
- Rainfall Excess = 22.8 inches
- Initial Pool Level = Full
- Flood Control Outlet Gates = Negligible
- Peak Inflow = 26,600 cfs
- Peak Outflow = 19,200 cfs
- Max. Pool = 912.1 ft-NGVD
- Freeboard = 4.9 ft

RECREATIONAL FACILITIES: None

TOTAL COST: $3,150,000

PLACED IN OPERATION: June 1962