Many reservoirs in Nghe An have low flood safety levels.

(Baonghean.vn) - According to Nghe An province's report on the current status of natural disaster prevention works this year, many of Nghe An's reservoirs have low flood safety levels.

The province currently has 625 reservoirs of all types, of which 13 have a capacity of over 5-75 million m3, 612 have a capacity of under 5 million m3, and 112 have dam heights of over 10 m. Currently, 75 reservoirs are managed by state-owned enterprises, the rest are managed and exploited by localities.

Checking the newly upgraded Dong Dang dam in Nghia Hanh commune (Tan Ky). Photo courtesy

Large reservoirs invested in and built by the state have been surveyed, designed, and calculated for safety according to prescribed standards and constructed in accordance with the correct procedures. 85 reservoirs have been upgraded to ensure flood safety, while many remaining dams are waiting to be upgraded. Many dams were built in the 70s and 80s of the last century, so the level of flood safety is low, and there is a risk of dam failure when floods exceed the design frequency.

The report of the Provincial People's Committee also emphasized: Weather developments are increasingly complex and unpredictable, so they cannot be ignored, especially reservoirs with many small reservoirs in the basin. When small reservoirs break, the water level will suddenly increase, threatening the safety of the dams behind.

Some reservoirs built by the state and the people, with a capacity of 0.5 - 1 million m3, are mainly managed by localities. The quality of documents is often inaccurate, construction monitoring, operation organization and management are not good, so when there is a big flood similar to the 1978 level, there is still a risk of dam failure such as Khe Go reservoir, Khe Lang reservoir, Khe Thi (Nghi Loc), Don Hung (Yen Thanh), Nghia Hoan dam, Khe Than dam (Tan Ky)... Therefore, flood prevention plans for reservoirs and dams must not be neglected.

Pearl