| Type of Headwater
Storage Dam |
Number of Dams | Average Storage*
at Earth Spillway Crest (dam3) |
Average Cost* per
Dam Structure |
Average Cost
per dam3 |
| Dry / Flood Control
Dam |
5 | 26.8 | $15,556 | $580 |
| Backflood Dam | 6 | 60.7 | $6,594 | $109 |
| Multipurpose Dam | 15 | 13.1 | $9,119 | $697 |
| Totals | 26 | 26.7 | $9,774 | $366 |