By official document No. 3129/BTNMT-TNN issued on 10th June 2021, the Ministry of Natural Resources and Environment (MONRE) required provinces to categorize lakes, ponds, and lagoons that are not allowed to be leveled. This activity aims to reduce environmental pollution and risk of flooding and subsequently protect water resources and secure water supply. The requirements within document No. 3129/BTNMT-TNN are to follow point 7, article 60 in Law on Water Resources 2012.