EDWARD MACDOWELL LAKE

NUBANUSIT BROOK - Merrimack River Basin - Peterborough, NH

DRAINAGE AREA: 44 sq.mi.

PERMANENT POOL: 102 Acre Recreation Pool
Elev: 912.0 ft NGVD

DAM
Type: Rolled Earth
Length: 1,100 Feet
Top Elev: 967.0 ft NGVD

FLOOD CONTROL STORAGE
Capacity: 12,650 Acre Feet
5.4 Inches of Runoff
Area at Crest: 840 Acres

CONTROL WORKS
Type: Conduit
Size: 7' x 7'
Length: 275 Feet
Invert Elev: 904.0 ft NGVD
Weir Elevation (top of logs, built Oct. 1985): 911.8 ft NGVD
Capacity (Full Pool): 1,600 cfs
Gates (Type): Power-driven Slide
Number: 3
Size: 3' x 7'
Channel Capacity: 650 cfs

SPILLWAY
Type: Chute Spillway/Ogee Weir
Length: 100 Feet
Elev: 946.0 ft NGVD

SPILLWAY DESIGN FLOOD RECREATIONAL FACILITIES: 15 Picnic tables with grills, bathroom, water, parking, boat ramp, and group picnic shelter.

TOTAL COST: $2,034,300

PLACED IN OPERATION: April 1950