| Fiscal | Qty | Method | Area | |
| Year | Removed | Dredged | Dredged | |
| 1928 | 1,100 | ? | Inner channel,upstream (IC) | |
| 1929 | 201,378 | hydraulic | Outer channel, (OC ATF) | |
| 123,976 | " | IC | ||
| 1931 | 37,309 | " | IC | |
| 1933 | 246,193 | " | IC | |
| 1935 | 108,045 | " | IC | |
| 1938 | 510,414 | " | IC | |
| 1942 | 101,003 | " | OC ATF | |
| 1947 | 141,018 | " | OC ATF | |
| 1947 | 42,500 | " | IC | |
| 1951 | 127,108 | " | OC ATF | |
| 1954 | 189,100 | " | OC ATF | |
| 1954 | 76,800 | " | IC | |
| 1962 | 244,449 | " | IC | |
| 1969 | 242,886 | " | IC | |
| 1978 | 152,945 | " | OC ATF | |
| 1980 | 51,599 | " | IC | |
| 1986 | 197,750 | clamshell | OC ATF | |
| 1987 | 54,275 | hydraulic | IC | |
| 1991 | 49,660 | clamshell | IC | |
| Total | ||||
| I & O | 2,899,508 | |||
| Per yr aver I & O | 46,024 | |||
| Aver 5th yr I & O | 241,626 | |||
| Inner channel total | 1,789,206 | |||
| Inner channel per yr. aver | 28,400 | |||
| Aver 5th yr | 149,101 | |||
| Outer channelt, ATF total | 1,110,302 | |||
| Outer channelt, ATFper yr aver | 17,624 | |||
| Aver 5th yr | 92,525 | |||