▁the ▁U . S . ▁Census ▁Bureau , ▁the ▁county ▁has ▁a ▁total ▁area ▁of ▁, ▁of ▁which ▁ ▁is ▁land ▁and ▁ ▁( 1 . 6 %) ▁is ▁water . ▁The ▁Sav ann ah ▁River ▁borders ▁the ▁eastern ▁side ▁of ▁the ▁county , ▁and ▁the ▁O ge e che e ▁River ▁borders ▁the ▁south west ▁portion . ▁E lev ation ▁var ies ▁to ▁around ▁ 4 0 ▁feet ▁on ▁the ▁Sav ann ah ▁river ▁to ▁ 3 2 0 ▁feet ▁at ▁the ▁Bay ▁Branch ▁community , ▁located ▁a ▁few ▁miles ▁west ▁of ▁S ylvan ia . ▁P ine , ▁o ak , ▁dog wood , ▁and ▁other ▁trees ▁pre val ent ▁to ▁the ▁South ▁can ▁be ▁found ▁in ▁S cre ven ▁County . ▁ ▁The ▁very ▁northern ▁portion ▁of ▁S cre ven ▁County , ▁defined ▁by ▁a ▁line ▁running ▁from ▁Gir ard ▁sout heast ▁and ▁parallel ▁to ▁State ▁Route ▁ 2 4 ▁to ▁the ▁South ▁Carolina ▁border , ▁is ▁located ▁in ▁the ▁Middle ▁Sav ann ah ▁River ▁sub - bas in ▁of ▁the ▁Sav ann ah ▁River ▁bas in . ▁A ▁north - central ▁section ▁of ▁the ▁county , ▁from ▁S ylvan ia ▁north ▁and ▁centered ▁on ▁Hil ton ia , ▁is ▁located ▁in ▁the ▁B rier ▁Creek ▁sub - bas in ▁of ▁the ▁same ▁Sav ann ah ▁River ▁bas in . ▁ ▁The ▁southern ▁portion ▁of ▁S cre ven ▁County , ▁from ▁New ington ▁running ▁north west ▁through ▁S ylvan ia , ▁is ▁located ▁in ▁the ▁Upper ▁O ge e che