１防洪蓄水实现水资源的时空分布均衡我省多年平均降雨量５３６mm，时空分布极不均匀，有７０％～８０％的降雨集中在汛期，其中，又有一半的雨量集中在一两次降雨上。降雨集中往往产生洪涝灾害，而一年中的其他时间又严重干旱缺水。在新世纪里，我省必须把暴雨洪水看成是可利 1 flood control water storage to achieve a balanced spatial and temporal distribution of water The average annual rainfall of 536mm in our province, very uneven distribution of time and space, 70% to 80% of the rainfall concentrated in the flood season, of which half of the rainfall concentrated in one or two rains on. Concentration of rainfall is often accompanied by floods, but severe drought and water shortages occur at other times of the year. In the new century, our province must regard the storm flood as a reward