Report
Overseas Field Training：Developing a monitoring station for runoff in northern catchment of Vietnam
 |
 |
|||
Weather station |
Gauging station |
Developing a monitoring station for runoff in northern catchment of Vietnam
Bui Xuan Dung
Destination and period: Vietnam Forestry University, Sept. 5 – Sept. 10, 2011
To understand the hydrological processes at the catchment scale in northern Vietnam,we installed a monitoring station to measure runoff and precipitation in a 1.6 ha mountainous
forested catchment at Luot mountain owned by Vietnam Forestry University, Hanoi.
Monitoring was conducted from September 8 to October 9, 2011. Based on hydrographical
analysis and separation, we found a mean storm runoff coefficient (storm runoff divided by
storm precipitation) of 58.5%. Of this, base flow contributed 56.3% and overland flow 43.7%.
Peak flow responses to precipitation depended on 2-day antecedent precipitation index (API2)
(e.g., previous dry period) and storm size. The monitoring station will continue to be used for
research and training by Vietnam Forestry University. The data we obtained will contribute
significantly towards decisions on water resource management. The monitoring station, with
instrumentation from Japan, is the first to be installed successfully in Vietnam.
As a result of this success, monitoring stations for measuring runoff can be developed in catchments
throughout Vietnam to obtain data as a basis for improving sustainable environmental management
in Vietnam. This will also make a significant contribution to training engineers in environmental and
natural resource management, and will make the University a leader in this field in Vietnam and
throughout Asia.
Key words: monitoring station, runoff, northern catchment of Vietnam