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徐州地区位于江苏省的最北部,在淮、沂、沭、泗河流的中下游。全区总面积1.4万余平方公里,耕地近1200万亩,其中85%为平原坡地,余为丘陵山区。全区属暖温带半湿润气候,降水年际变化大,时空分布不匀。年平均降雨量为850毫米,最大年均降雨量为1264毫米,最小为604毫米,相差1.1倍。同时降雨年内变幅也大,70%降雨集中在七、八、九三个月,暴雨集中,利用困难,大部废泄。特别是上游有山东省的临沂、济宁、荷泽三个地区和枣庄市五万余平方公里洪水流经我区,尤以沂、沭、洪水势猛流急,危害极大。解放前,经常淹没
Xuzhou region is located in the northernmost part of Jiangsu Province, in the middle and lower reaches of Huai, Yi, Shu, Si River. The total area of 1.4 million square kilometers, nearly 12 million mu of cultivated land, of which 85% of the plain slope, more than hills and mountains. The region is a warm temperate semi-humid climate, precipitation, interannual variation, uneven temporal and spatial distribution. The average annual rainfall of 850 mm, the maximum annual rainfall of 1264 mm, a minimum of 604 mm, a difference of 1.1 times. In the meantime, rainfall also fluctuated greatly during the year, with 70% of rainfall concentrated in seven, eight and nine months. The heavy rain concentrated and difficulties were encountered and most of the waste was drained away. Especially in the upper reaches of Shandong Province, Linyi, Jining, Heze three regions and Zaozhuang City, 50,000 square kilometers of floods flow through our district, especially in Yi, Shu, floods impulsive and imminent, great harm. Before liberation, often submerged