Dezhou in northwest Shandong at the lower reaches of the Yellow River close to the Bohai Bay in the east is at the transition from the east coast to the inland area and thus has a warm-temperate semi-humid monsoon climate of adequate sunshine, precipitation and temperature. Dezhou is profoundly affected by the monsoon in that it has four distinct seasons, clear division between the cold and warm as well as the dry and rainy seasons and marked characteristics of the continental climate. Temperature picks up quickly in the dry and windy spring; summer is hot and rainy; autumn is mostly sunny and cool; winter is cold and dry, with little snow. Its meteorological disasters has the following features: there are more droughts than floods; one drought followed by a flood that precedes another drought; widespread drought coupled with local floods and widespread flood coupled with local droughts; year-long droughts, no year-long floods; the general law of spring droughts followed by summer floods that precede late autumn droughts. It may be well concluded that for nine of ten years there are disasters and whenever there are no droughts there are floods.