But there are simply no good ways of dealing with the problem. Standard dredging methods can't be used because there is no practical way to dispose of the dredged silt. And downstream residents would strongly object to releasing the silt in their direction.
此外受限於山區腹地不足、交通不便，傳統清淤方式似不可行；然若透過水庫往下游導引排砂，又會造成下游居民反彈，可以說是進退兩難。