概況
發源於莒南縣竹蘆鄉三皇山東坡，東南流，下游為贛榆與日照的界河，在日照安東衛鎮荻水南入南黃海，河長45公里，流域面積396平方公里，河道平均比降5.6/1000，河網密度0.39公里/平方公里。
參考文獻
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