| Class A: No dredging permitted at any time. |
| Class B: Open to dredging from July 1 through August 31. |
| Class C: Open to dredging from June 1 through September 30. |
| Class D: Open to dredging from July 1 through January 31. |
| Class E: Open to dredging from September 1 through January 31. |
| Class F: Open to dredging from July 1 through September 30. |
| Class G: Open to dredging from September 1 through September 30. |
| Class H: Open to dredging throughout the year. |