Service Package Number 15: Regular Management And Maintenance Of Local Inland Waterways In Thanh Hoa Province Including: Lach Hoi - Dao Ne Route, Can River, Yen River, Hoang River, Ma River, Chu River, Buoi River, Chuoi River, Nhoi River, Cau Quan River, Luc Giang River, Cau Chay River, Muc River Lake - Ben En National Park, Cua Dat Lake, Trung Son Hydropower Reservoir (Years 2026 - 2028)