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Operating Levels at Dam:
|
|
|
Maximum surcharge pool
|
area: 27,450 acres El.450
|
|
Normal Operation:
|
|
|
Full pool
|
area: 22,500 acres El.445
|
| Minimum pool |
area: 19,550 acres El.442 |
| Length (backwater to Cordell Hull L & D) |
97.3 miles |
| Shoreline, length at El. 445 |
440 miles |
| Storage (flat pool assumption), acre-feet: |
|
|
Surcharge flood storage (El. 450-445)
|
125,000 |
| Pondage allowance for power (El. 445-442) |
63,000 |
| Permanent pool (below El. 442) |
357,000 |
| Total volume at El. 450 |
545,000 |
|
|
|
| LOCK |
|
| Clear chamber dimensions, feet |
84 by 400 |
|
Water depth over sills at normal pool levels, feet
|
17.0 upper; 13.0 lower |
| Lift at normal pool levels, feet |
60 |
| Minimum lock filling time at normal head, minutes |
12.6 |
| |
|
| DAM |
|
| Type |
Concrete-gravity and earth fill |
| Maximum height, feet |
98 |
| Length, feet: |
|
| Powerhouse section |
380 |
| Spillway section |
355 |
| Navigation lock (top width) |
145 |
| Earth embankment |
2,870 |
| Total, structures |
3,750 |
| Spillway: |
|
| Net width opening, feet |
270 |
| Discharge capacity, cubic feet per second |
236,000 |
| Crest gates: |
|
| Number and type |
6,tainter |
| Size, width and height, feet |
45 by 41 |
| Volume content, cubic yards (approx.) : |
|
| Concrete structures |
351,000 |
| Embankment section |
440,000 |