04. CALCULATED SCENARIOS FOR UPGRADING THE NGU HUYEN KHE IRRITATION SYSTEM IN THE CONDITION OF 1% RAINFALL INUNDATION

Tóm tắt

Ngu Huyen Khe Irrigation System (NIS) is the main irrigation route for 5 districts Me Linh, Dong Anh, Gia Lam, Yen Phong and Tien Son. It plays an important role in draining and irrigating water for 18,404 Ha of rice fields. In 1% rainfall in 2008, NIS revealed its weak points, causing the inundation of thousands of hectares of rice fields and two hundred billions of VND loss. The main are reasons related to dike safety and lack of drainage pumping capacity. Therefore, this paper proposes and calculates some NIS scenarios to upgrade NIS to be able to drain 1% rainfall inundation. The scenarios are not only conducive to irrigation and drainage, but also to water storage, ecological and environmental rehabilitation.