RIONI, daryoest dar Respublikai Sovetii Sotsialistii Gurjiston. Tulash 327 kilometr, masohati havzaash 13400 kilometr2. Az nishebihoi janubii qatorkuhi Asosi yo Bakhshgohi Kavkazi Kalon ibtido meyobad. To shashri Kutaisi az bayni kuhho, bad az pastii Kolkhida jori shuda, dar nazdikii shahri Poti ba bahri Siyoh merezad.
Salkashi az shahri Oni sar meshavad. Obi daryoro baroi obyorii zaminho istifoda mebarand. Dar Rioni Gidro Elektro Stansiyahoi Rioni va Gumat sokhta shudaand. Az vodii boloobi Rioni Rohi Harbii Osetiya meguzarad.