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1 Luu, T. N. M.; Orange, Didier; Dang T. H.; Le Lan Anh; Garnier, J. 2007. Impact des activites anthropiques sur les flux de matieres en suspension et sur la qualite des eaux du fleuve Rouge a l’entree du delta. In French. [Impact of human activities on material flows suspended and the water quality of the Red River at the entrance of the delta]. In Do, S. Q. Integrated management of water and soil: resources, facilities and risk in rural and urban - proceedings of the 1st Scientific Meeting of the Inter-Network AUF, Hanoi, Vietnam, 6-9 November 2007 - Theme 2: Towards a sustainable management of rural and urban water systems. Montreal, Canada: Agence Universitaire de la Francophonie (AUF); Marseille, France: Institut de Recherche pour le Developpement (IRD); Hanoi, Vietnam: National University of Hanoi (UNH); Hanoi, Vietnam: Academy of Agricultural Sciences of Vietnam (SSAC); Hanoi, Vietnam: National Institute for Soils and Fertilizers (NISF). 6p.

Rivers ; Water quality ; Wastewater ; Pollution control / Vietnam / Red River / Hanoi / Day River / Nhue River

(Location: IWMI HQ Call no: 333.9162 G784 LUU Record No: H040809)

http://www.infotheque.info/fichiers/JSIR-AUF-Hanoi07/articles/AJSIR_2-p9_Luu.pdf
https://vlibrary.iwmi.org/pdf/H040809.pdf

(173KB)

The water quality of the Red River is studied near Hanoi in comparison with the water quality of two small rivers, Day and Nhue, going to the Sea of China. The suspended load in the Red River is strongly linked to the rainy season, even near Hanoi in spite of the large demography: the suspended load is weak during the dry season, high during the rainy season (rising from 19 to 115 mg/l in 2005/2006). However our measurements prove that the suspended load increases within the Red River inside the Delta: we assume that it is due to the erosion of the river bank. In comparison with the Red River, the waters of the small streams are less loaded in suspended matter, due to the use of dams. At the opposite, the conductivity of the small streams are equal or highest than the Red River water. The measurements (concentrations in ammonium and phosphate) prove that the Red river could be used to clean the waste waters to drain the surface waters of the Delta to the Chinese sea.