Figure 2. Proposed alarm level compared to annual flood peak at Dong Hoi
station
The number of Dak Mot station in central Highland (Figure 3) are five
years (28%), twelve years (67%) and 16 years (89%) over alarm level
III, II and I, respectively. In this station, water levels can reach to
584-585m and 585-587m for moderate and high floods. At Can Tho station
in tidal area of the South (Figure 4), the maximum water level normally
is higher than 2.0. The proposed flood alarm levels result 35% of 28
years water level over than alarm level III, 75% of collected years
over alarm level II and 90% over alarm level I.