洞(dong)(dong)庭(ting)湖(hu)(hu),古(gu)稱(cheng)云夢、九江(jiang)(jiang)和重湖(hu)(hu),處于長江(jiang)(jiang)中游(you)荊江(jiang)(jiang)南(nan)岸(an)。洞(dong)(dong)庭(ting)湖(hu)(hu)北納長江(jiang)(jiang)的松滋(zi)、太(tai)平、藕池、調弦四(si)口來水,南(nan)和西(xi)接湘、資(zi)、沅、澧四(si)水及汨羅江(jiang)(jiang)等小(xiao)支流(liu),由(you)岳陽市(shi)城陵磯注入長江(jiang)(jiang)。洞(dong)(dong)庭(ting)湖(hu)(hu)古(gu)代曾號稱(cheng)“八百里(li)洞(dong)(dong)庭(ting)”。