Abstract
Determining alarm levels of river floods is considered as an effective
non-structural measure to prevent and mitigate the damages of flood and
inundation. Studying scientific and practical base for identifying and
adjusting flood alarm level is the process of understanding flood
characteristics and assessing impacts of floods on social and economic
activities. In this paper, proposed criteria to delineate water levels
corresponding to flood alarm levels include: (1) flood magnitude; (2)
flood derivation and flood duration; (3) flood risks and damage; (4)
correlation with neighboring stations; (5) flood characteristics and
local characteristics and (6) other criteria (rounded, traditional). The
result of water level corresponding to flood warning for each
hydrological station is helpful for warning and prevention of natural
disasters and floods.