莒南县现有小型水库182座,其中小(1)型水库32座,小(2)型水库150座,控制流域面积291km2,总库容1.2亿m3,兴利库容0.7亿m3,这些水库在防洪减灾、发展农村经济、改善农村生产生活条件、调整农业结构等方面发挥了重要作用,社会、经济效益显著。但这些水库大多建于20世纪60～70年代,? There are 182 small reservoirs in Junan County, including 32 small (1) type reservoirs and 150 small (2) type reservoirs, with a control basin area of ​​291km2, a total storage capacity of 120 million m3 and a capacity of 70 million m3 Flood control and disaster reduction, the development of rural economy, improving rural production and living conditions, adjusting the agricultural structure and other aspects, has significant social and economic benefits. However, most of these reservoirs were built in the 1960s and 1970s.