洞(dong)庭(ting)湖(hu)(hu),古(gu)(gu)稱(cheng)云夢、九江和重(zhong)湖(hu)(hu),處于長(chang)江中(zhong)游荊江南岸。洞(dong)庭(ting)湖(hu)(hu)北納長(chang)江的松滋(zi)、太平、藕池、調(diao)弦四口來水,南和西接湘、資、沅(yuan)、澧四水及汨羅江等小支(zhi)流,由(you)岳陽市城陵(ling)磯注入長(chang)江。洞(dong)庭(ting)湖(hu)(hu)古(gu)(gu)代曾號稱(cheng)“八百(bai)里洞(dong)庭(ting)”。