集集共同引水計畫於民國82年5月奉行政院核定實施，依據環境影響評估法屬重大開發計畫，除於施工期間必須進行環境監測工作之外，營運期間對環境之管理亦必須妥擬執行計畫。自民國91年起集集共同引水計畫正式邁入營運管理階段，為延續施工期間環境監測工作，探討營運期間對週遭環境之影響，並謀對策以減輕不利影響至最低程度，民國92~102年已完成集集攔河堰環境監測，爰持續進行民國103年度水域生態及水質監測，以落實環境保護政策。
The Chi-chi collaborative water diversion plan has been approved and implemented since May 1993. Base on the evaluation through the environmental influence principle, the aforementioned plan has been considered as one of the major development project that required not only environmental monitoring during constructional stage, but also a properly formulated environment management plan throughout the operating stage. In 2002, the Chi-chi collaborative diversion plan had officially moved into its operational management stage. To continue with the environmental monitoring tasks and to research into the possible influences of this project to the surrounding areas, while come up with a counterplot to ease the negative influences, the Chi-chi weir has accomplished its environmental monitoring tasks between year 2003 and 2013. A follow up watershed dispersion and water quality control project continues in year 2014 in order to carry out the environmental protection policies.
The Chi-chi collaborative water diversion plan has been approved and implemented since May 1993. Base on the evaluation through the environmental influence principle, the aforementioned plan has been considered as one of the major development project that required not only environmental monitoring during constructional stage, but also a properly formulated environment management plan throughout the operating stage. In 2002, the Chi-chi collaborative diversion plan had officially moved into its operational management stage. To continue with the environmental monitoring tasks and to research into the possible influences of this project to the surrounding areas, while come up with a counterplot to ease the negative influences, the Chi-chi weir has accomplished its environmental monitoring tasks between year 2003 and 2013. A follow up watershed dispersion and water quality control project continues in year 2014 in order to carry out the environmental protection policies.