| 12.1996 | 1st illustration meeting of the planning of Taimali River |
| 3.1997 | 2nd illustration meeting of the planning of Taimali River |
| 9.1998 | The commence of the review of planning of Taimali River |
| 10.1998 | 1st illustration meeting of the review of planning of Taimali River after typhoon Morakot |
| 10.1998 | 2nd illustration meeting of the review of planning of Taimali River after typhoon Morakot |
| 12.1998 | Approval of the review of planning of Taimali River in 28th reviewing meeting |
| 12.1998 | 3rd illustration meeting of the review of planning of Taimali River after typhoon Morakot |
| 5.1999 | The completion of illustration meeting directed by Taitung County Government. |
| 12.1999 | Preliminary dredging project(approximate amount of dredging, 640 thousand cubic meter) |
| 7.2011 | Flood control project of 11 kilometers |
| 2011~2013 | Completion of total dredging project (approximate amount of dredging, 2.9 million cubic meter) |