Flood protection of Fuhe river basin has been payed high attention after Changkai-levee crevasse in 2010. This
paper constructions a model of flood disaster lose calculation considering flood disaster and social economic
developing based on GIS. Firstly social economic indexes have been selected according to characteristics of the
urban and the rural. Secondly a mathematical model of flood routing using Finite Volume Method has been made
in spacial information grids, the data of inundated depth and flood duration can be extracted from the grids. In the
end ,wo calculate the loss by flood disaster losses calculation process model. This paper solves the stacking
problem of flood characteristic and administrative boundaries effectively, which makes a development on accuracy
of flood disaster assessment.
Liaohe river basin mountain torrent disaster serious, this paper tells a system of flood loss assessment which would be
helpful for the decrease of the geologic disastrous loss. Firstly, it mainly analyzes four uncertainties aspects of flood loss:
precision of prediction and simulation, accounting standard of asset, asset vulnerability and flood prevention ability.
Secondly, EasyDHM has been selected for forecast flood, the simulation forecast time is 6h before real flood peak coming;
flood inundation model is selected for flood submerged level information extracted and flood submerged map. In the end,
the model of flood Lose calculation is used to calculation the loss by the extracted information from stacking social
economic data and water data. The feasibility of flood loss assessment system has been proved by flood simulation in 1998,
2003 and 2005. The unified assessment criteria make the assessment result difference, but this system of flood loss
assessment has some value in system integration.