TOWNSHEND DAM

WEST RIVER - Connecticut River Basin - Townshend, VT

DRAINAGE AREA: 278 sq.mi. (Gross)
106 sq.mi.(Net)

PERMANENT POOL: 95 Acre Recreation Pool
Stage: 21 ft

DAM
Type: Rolled earth, rock fill
Length: 1,700 Feet
Top Elev: 583.0 ft NGVD(126 ft)

FLOOD CONTROL STORAGE
Capacity: 32,900 Acre Feet
5.8 Inches of Runoff(net)
Area at Crest: 735 Acres

CONTROL WORKS
Type: Horseshoe Conduit
Size: 20.5' diameter
Length: 360 Feet
Invert Elev: 457.0 ft NGVD
Weir Elevation (top of logs): 477.0 ft NGVD (20 ft)
Capacity (Full Pool): 22,100 cfs
Gates (Type): Vertical Lift
Number: 3
Size: 7'-6"W x 17'H
Channel Capacity : 9000 cfs

SPILLWAY
Type: L-shaped Side Channel/Ogee Weir
Length: 439 Feet
Elev: 553.0 ft NGVD (96 ft)

SPILLWAY DESIGN FLOOD

Original Design Criteria:
- Rainfall Excess: 17.2 inches
- Initial Pool Level: Full
- Flood Control Outlet Gates: Operable
- Peak Inflow: 228,000 cfs
- Peak Outflow: 224,000 cfs
- Max. Pool: 578.0 ft NGVD
- Freeboard: 5.0 ft
Current HMR 51 & 52 Criteria:
- Rainfall Excess: 19.7 inches
- Initial Pool Level: Full
- Flood Control Outlet Gates: Operable
- Peak Inflow: 248,000 cfs
- Peak Outflow: 241,000 cfs
- Max. Pool: 579.5 ft NGVD
- Freeboard: 3.5 ft

RECREATIONAL FACILITIES: 120 Picnic tables with grills, drinking water, parking areas, beach with change house, bathrooms, boat ramp, and three group picnic shelters.

TOTAL COST: $7,392,400

PLACED IN OPERATION: June 1961