| Total Water Storage at Elevation | 646,200 ac-ft at 450 |
| Maximum Water Surface Elevation | 450.0 ft |
| Spillway Type | Overflow section at center of dam |
| Spillway Capacity at Elevation | 400,000 cfs at 455 |
| Outlet Works Capacity at Elevation | 22,300 cfs at 450 ft |
| Drainage Area | 178,392 sq mi |
| Probable Maximum Flood (PMF) Report | 1989 PMF - October - general storm PMP on Hoover-Parker Dam basin with 100-year Hoover release |
