W. F. GEORGE DAM
CHATTAHOOCHEE RIVER, GEORGIA
PERTINENT DATA
 
STREAM FLOW

Drainage area at dam site - square miles                          7,460
Drainage area (dam to West Point Dam) - square miles              4,020
Minimum mean daily discharge, 19 October 1954, (affected by
 upstream regulation at existing power dams) - cfs                  980
Minimum mean monthly flow (Oct. 1931) - cfs                       1,758
Average annual flow (Aug. 1928 - Dec. 1961) - cfs                 9,992
Average annual flow since dam completed (1963 - 1981) - cfs      10,525
Discharge at bankfull stage - cfs                                65,000
Maximum mean monthly flow (March 1929) - cfs                     92,600
Maximum known discharge (17 March 1929) - cfs                   203,000

SPILLWAY DESIGN FLOOD

Total rainfall, Buford Dam to Walter F. George Dam - inches       18.11
Initial loss - inches                                              0.00
Average infiltration rate - inches per hour                        0.05
Total storm runoff - inches                                       15.22
Total volume of storm runoff - acre feet                      5,244,190
Peak rates of flow
  Natural flow at dam site - cfs                                542,000
  Inflow to full reservoir - cfs                                767,800
  Reservoir outflow - cfs                                       653,000
Base flow - cfs                                                  13,000
Duration of flood - days                                              7

STANDARD PROJECT FLOOD

Total rainfall, Buford Dam to Walter F. George Dam - inches        8.37
Initial loss - inches                                              0.00
Average infiltration rate - inches per hour                        0.05
Total storm runoff - inches                                        6.69
Total volume of storm runoff - acre feet                      2,305,000
Peak rates of flow
  Natural flow at dam site - cfs                                261,000
  Inflow to full reservoir - cfs                                380,300
  Reservoir outflow - cfs                                       269,000
Base flow - cfs                                                  13,000
Duration of flood - days                                              6

RESERVOIR

Pool elevations - feet msl

Maximum pool, spillway design flood                               206.6
 (initial pool, elevation 190).

Maximum pool, standard project flood                              200.1
 (initial pool elevation 190).
Full pool elevation                                               190.0
Minimum conservation pool                                         184.0
Storage volumes - acre feet
  Total volume to elevation 190                                 934,400
  Volume between elevations 184 and 190                         244,400
  Total volume below elevation 184                              690,000
Reservoir areas - acres
  Full summer level, elevation 190                               45,180
  Minimum power pool, elevation 184                              36,375
Area within taking line - acres
  Purchased in fee simple                                        51,540
  Right to inundate acquired by easement                         27,809
  Within Fort Benning military reservation                        9,350
  Riverbed                                                        2,900 
  Total                                                          91,599 
Maximum elevation of clearing - feet msl                          192.0
Minimum elevation of clearing - feet msl                          175.0
Area cleared acres                                               14,630
Length of shoreline at elevation 190 - miles                        640
Length of reservoir at elevation 190 - miles                         85

 

TAILWATER ELEVATIONS

Normal, no flow                                                   102.0
Normal, one turbine operating                                     103.2
Normal, full powerhouse flow                                      112.0
Bankfull (65,000 cfs)                                             130.0
Highest known flood                                               158.0
 

DAM/EARTH DIKES

Total length - feet                                              12,128
Length on right bank - feet                                       6,124
Length on left bank - feet                                        6,004
Top elevation - feet msl                                          215.0
Maximum height - feet                                              68.0
Top width - feet                                                   30.0

SPILLWAY SECTION

Total length including end piers - feet                             708
Net length - feet                                                   588
Number of piers, including end piers                                 15
Width of piers - feet                                                 8
Elevation of crest - feet msl                                     163.0
Elevation of service bridge - feet msl                           208.08
Type of gates                                                   Tainter
Size of gates - feet                                            42 X 29
Elevation top of gates - feet msl                                 192.0
Number of gates                                                      14
Elevation of high level apron - feet msl                           99.0
Number of bays, high level apron                                      8
Elevation of low level apron - feet msl                            94.0
Number of bays, low level apron                                       6
Length of high level apron - feet                                  89.5
Length of low level apron - feet                                   86.0
Maximum allowable head differential - feet                         88.0
 

LOCK

Maximum lift - feet                                                88.0
Chamber width - feet                                               82.0
Nominal chamber length - feet                                       450
Distance center to center of pintles - feet                         505
Freeboard at lower guide and guard walls when lock
 becomes inoperative - feet                                           1
Percent of time lock will be inoperative                            0.2
Type of gates                                                     Miter
Height of upper gate - feet                                        36.0
Height of lower gate - feet                                       108.0
Type of culvert valves Reverse                                  Tainter
Dimensions of culverts - feet                                   12 X 12
Elevations - feet msl
 Top of upper guide and guard walls                               197.0
 Top of walls at upper gate blocks                                208.0
 Top of chamber walls                                             197.0
 Top of lower guide and guard walls                               147.0
 Top of upper miter sill                                          172.0
 Top of lower miter sill                                           89.0
 Chamber floor                                                     88.0
 Elevation top of stoplogs, downstream                             89.0
 Elevation top of stoplogs, upstream                              172.0
Total time required to fill lock chamber, starting with
   valves closed - minutes                                         13.0
Total time required to empty lock chamber, starting with
  valves closed - minutes                                          12.5
 

POWER PLANT

Length of foundation - feet                                         335
Width of foundation of powerhouse and intake - feet                 168
Number of units                                                       4
Spacing of units - feet                                              67
Type of turbines                       Adjustable blade, propeller/type
Type of scroll case                                            Concrete
Elevation of distributor - feet msl                               103.0
Elevation of bottom of draft tube - feet msl                       57.5
Length of draft tube - feet                                        66.5
Type of draft tube gate                                         Sliding
Number of draft-tube gates per unit                                   2
Size of draft-tube gates - feet                                 24 X 22
Type of operation for draft-tube gates                     Gantry Crane
Generator rating, each unit - kW                                 32,500
Generator rating, each unit - kVA                                36,111
Generator speed - rpm                                             112.5
Generator electrical characteristics                  3 phase, 60 cycle
                                                           13,000 volts
Location of switchyard                           Right bank, downstream
Elevation of switchyard - feet msl                                160.5
Transmission voltage - kV                                           115

 

POWER DATA

Rated net head - feet                                              88.0
Rated net head - test                                              70.0
Minimum net head - feet                                            37.0
Plant output at rated net head
  Installed capacity at rated power factor - kW                 130,000
  Installed capacity at unity power factor - kW                 145,000
  Overload capacity at unity power factor - kW                  160,000
  Average annual energy - kWh                               477,000,000
Tailwater elevations - feet NGVD
  All turbines 150 MW (26,000 cfs)                                112.0
  Three turbines 112 MW (19,500 cfs)                              109.0
  Two turbines 75 MW (12,000 cfs)                                 106.0
  One turbine 38 MW (5,500 cfs)                                   103.0
  No Flow                                                         102.0