Information collection. The flood data of 20 12 was searched online. Check the weather, rainstorm, flood, natural environment and living environment from this book.

A roughly defined theme. Prevention strategy of XXX flood disaster. Based on the information collected, you can make adjustments.

Some documents are roughly certain. 1, overview. The natural geographical environment, economic and cultural conditions of XXX in Beijing. 2 The formation of flood. Say several types. According to this book, what kind of Beijing is?

3 flood factors. This is the mapping table of disaster situation, expansion coefficient and XXX area in Beijing.

4 preventive strategies. Climate, website construction, prediction, engineering, river dredging, diversion, congestion, development, mechanism and plan.

Conclusion.