Damsite, miles above mouth of Chattahoochee River
46.5
Drainage area above damsite - square miles
8,210
Drainage area between damsite and Walter F. George
Dam -
square miles
753
Length - river miles
28.6
Normal full pool elevation, feet, msl
102
Peak flood for standard project flood, feet, msl
130.2
Peak pool for spillway design flood, feet, msl
135.5
Area at static full pool (elev. 102) - acres
1,540
Total volume at static full pool - acre-feet
18,180
Shore line length at static full pool - miles
65
Average annual flow, Jan 1929 - Dec 1971 - cfs
10,890
Minimum mean daily, 26 Oct 1930 - cfs
1,190
Maximum known, 18 Mar 1929 - cfs
203,000
Bankfull (approx.) for downstream reach - cfs
40,000
Minimum mean monthly flow, Oct 1954 - cfs
1,370
Maximum mean monthly flow, Mar 1929 - cfs
99,600
Standard project flood peak inflow - cfs
293,100
Spillway design flood peak inflow - cfs
630,000
Highest known flood (18 Mar 1929, peak discharge -
203,000 cfs)
125.8
Selected spillway discharges:
Capacity at headwater elevation 102 (43,600
cfs)
100.7
Bankfull capacity for downstream reach (40,000
cfs, approx.) 99.7
Capacity at headwater elevation 96 (30,800 cfs)
94.5
Full Walter F. George power operation, best gate,
no
reregulation (25,000 cfs, approx.)
92.5
Peaking operation Walter F. George power plant:
Reregulated peak discharge, 20,000 cfs
89.2
Reregulated peak discharge, 15,000 cfs
85.5
Reregulated peak discharge, 10,000 cfs
81.8
Minimum tailwater (zero discharge)
77.0
Total length - feet
620
Fixed-crest length - feet
340
Fixed-crest elevation - feet, msl
102
Gated length - feet
280
Gated crest elevation - feet, msl
82
Gated net length - feet
240
Number of piers
5
Width of piers - feet
8
Service bridge elevation - feet, msl
142
Type of gates
Tainter
Size of gates - feet
60 x 21
Top of gate elevation (closed) - feet, msl
103
Number of gates
4
Capacity of gated spillway at pool elevation 102-cfs
43,600
Capacity of gates spillway at pool elevation 96-cfs
30,800
Apron elevation
Varies
Apron length below gated section - feet
34
Static full upper pool elevation - feet msl
102
Normal lower pool elevation - feet, msl
77
Maximum lift feet
25
Chamber width feet
82
Nominal chamber length - feet
450
Distance between pintles - feet
505
Elevation of top of lock walls - feet, msl
115
Elevation top of upper sill - feet, msl
83
Elevation of top of lower sill - feet, msl
64
Elevation of floor - feet, msl
60
Type of gates
Miter
Height of lower gate - feet
51
Height of upper gate - feet
32
Type of valves
Tainter
Culvert size - feet
10 x 10
Freeboard when lock becomes inoperative - feet
1
Percent of time inoperative
0.4