BARRE FALLS DAM

BARRE FALLS DAM

WARE RIVER - Connecticut River Basin - Barre, MA

DRAINAGE AREA: 55 sq.mi.

PERMANENT POOL
Summer: None
Winter: 776.0 ft NGVD

DAM
Type: Rolled earth fill
Length: 885 Feet
Top Elev: 830.0 ft NGVD (69 ft)

FLOOD CONTROL STORAGE
Capacity: 24,000 Acre-Feet
8.0 Inches of Runoff
Area at Crest: 1,400 Acres

CONTROL WORKS
Type: Horseshoe Conduit
Size: 9'8" diameter
Tunnel Length: 250 Feet
Gate Invert Elev: 761.0 ft-NGVD
Intake Channel Bottom Elev: 771.0 ft-NGVD
Discharge Capacity at Full Pool: 3,000 cfs
Gates (Type): Sluice
Number: 2
Size: 4'-5" x 9'
Channel Capacity: 1,000 cfs

SPILLWAY
Type: Concrete Gravity Ogee Weir
Length: 60 Feet
Elev: 807.0 ft-NGVD (46 ft)

SPILLWAY DESIGN FLOOD

• Original Design Criteria:
  • Rainfall Excess: 21.3 inches
  • Initial Pool Level: Full
  • Flood Control Outlet Gates: Inoperable
  • Peak Inflow: 68,300 cfs
  • Peak Outflow: 16,300 cfs (spillway only)
  • Max. Pool: 825.0 ft-NGVD
  • Freeboard: 5.0 ft
  
  
• Current HMR 51 & 52 Criteria:
  • Rainfall Excess: 28.0 inches
  • Initial Pool Level: Full
  • Flood Control Outlet Gates: Operable
  • Peak Inflow: 82,770 cfs
  • Peak Outflow: 22,320 cfs
  • Max. Pool: 826.5 ft-NGVD
  • Freeboard: 3.5 ft