Statistics
General
- Region ............
Pacific Northwest
- State
......................... Washington
- County ......................... Grant,
Okanogan
- Project
............................ Columbia Basin
- Dam type
...................... Concrete gravity
- Location .. 85 Miles West of Spokane, WA
- Watercourse ................... Columbia
River
- Reservoir .... Franklin D. Roosevelt Lake
- Original construction ..............
1933-1942
- National ID Number ................
WA00262
- Modified ................ 1967-1974, 1982-1988
Hydraulics
- Total storage to El. 1290 ... 9,562,000 acre-ft
- Service
spillway
Capacity at El. 1290 .......... 1,000,000 cfs
- Outlet
works Capacity at El. 1291.5 > 265,000 cfs
- Power outlet capacity
........... 207,000 cfs
Dimensions
- Crest Elevation
............................ 1311.08 ft
- Top of Parapet Elevation
............... 1314.58 ft
- Structural Height
................................ 550 ft
- Hydraulic Height
................................ 380 ft
- Crest
Length .................................. 5,223 ft
- Crest Width
........................................ 30 ft
- Base Width
...................................... 500 ft
- Volume of
Concrete ........ 11,975,520 cu yd
Hydrology
- Drainage area .......................... 74,100 sq mi
- Hydrometeorological
Report ....... HMR 18
- PMF (estimated)
... Snowmelt flood for an optimum snowpack and a small rainstorm
over the basin
- Volume >125,000,000
acre-ft over several months
- Peak inflow
............................. 1,230,000 cfs
- Maximum water
surface ................ 1321.8 ft
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Statistics
General
- Region ...............
Lower Colorado
- State
.................................. Nevada
- County .......... Clark (NV), Mohave (AZ)
- Project
........................... Boulder Canyon
- Dam type
................. Concrete thick arch
- Location .... 35 Miles SE of Las Vegas,
NV
- Watercourse ................... Colorado
River
- Reservoir
................................ Lake Mead
- Original construction ..............
1931-1936
- National ID Number .................
NV10122
Hydraulics
- Total storage to El. 1221.4 ..537,000 acre-ft
- Service spillway
Capacity limited to ............... 260,000 cfs
Dimensions
- Crest Elevation
.......................... 1232.0 ft
- Top of Parapet Elevation .............
1236.0 ft
-
Structural Height
......................... 726.4 ft
- Hydraulic
Height
............................ 576 ft
- Crest Length
.............................. 1,244 ft
- Crest
Width
.................................... 45 ft
- Base
Width .....
............................. 660 ft
- Volume of Concrete ..........
4,400,000 cu yd
Hydrology
- Drainage area ................... 167,800 sq mi
- Hydrometeorological Report
............... NA
- PMF
.......... 1989 PMF August general
storm with 100-year snowmelt
- Volume .. 9,349,000 acre-feet over 60
days
- Peak inflow ........................
1,130,000 cfs
- Maximum water surface
............. 1234.2 ft
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