Since 1990s

the Huangda Lake often suffers from flood water. Compared with the floods in 1950s

its precipitation in 1990s is larger

and the disaster area has broaden

which owns to low ability of storing and regulating floodwater in Huangda Lake. The remote sensing imagery and some related data can give analysis about the geological history

climate

hydrology and the topographical features of Huangda Lake

as well as the variations of the waters and some main problems. They can also make out that the silt and reclaiming land from the lake are the major reasons of the reducing of the water area. The paper proposes some measures to reduce the damage degree caused by flood

that is to strengthen the study of lake

improve the water conservancy facilities and to bring its advantage of linking Longgan Lake and Po Lake into play. The author suggests setting up an automatic system to forecast the water. Based on sustainable development

the paper puts forward some measures of developing fishery and tourist trade.