3. Do thời gian khai thác đã lâu, công trình đã xuống cấp nghiêm trọng. Các vấn đề về sạt lở, rò rỉ nước được ghi nhận tại hệ thống công trình hồ chứa nước Ngòi Là 2 gồm:
3. By the time the exploit was long, the work was serious degradation. The problem of the avalanche, water leakage is noted in the system the water reservoir of the Stinger Is 2 include:
3. Due to time have long exploited, work has seriously degraded. The problem of erosion, water leakage was recorded in the system of water reservoirs Ngoi A 2 include: