▁Ash ▁out flow ▁from ▁the ▁River ▁Col ne ▁was ▁moved ▁south ▁and , ▁east ward ; ▁ 1 0 0 ▁metres ▁of ▁its ▁length ▁was ▁di vert ed ▁to ▁make ▁way ▁for ▁the ▁St aines ▁B yp ass ▁( the ▁A 3 0 ) ▁where ▁it ▁flows ▁under ground ▁for ▁ 2 7 0 ▁metres ▁beneath ▁the ▁Cro oked ▁B illet ▁round about . ▁▁ 1 9 4 7 ▁Flo od ▁The ▁most ▁recent ▁serious ▁flo od ▁on ▁the ▁River ▁Ash ▁was ▁in ▁ 2 0 1 4 , ▁with ▁the ▁previous ▁being ▁in ▁ 1 9 4 7 ▁when ▁homes ▁and ▁roads ▁were ▁sever ely ▁affected ▁by ▁significant ▁in land ▁flo oding ▁in ▁this ▁part ▁of ▁England . ▁This ▁was ▁not ▁due ▁to ▁the ▁flo od ▁prevent ion ▁methods ▁on ▁the ▁River ▁Ash ▁but ▁to ▁those ▁on ▁the ▁River ▁Col ne , ▁as ▁well ▁as ▁high ▁water ▁levels ▁on ▁the ▁River ▁Th ames . ▁ ▁The ▁ 2 0 1 4 ▁flo od ▁was ▁also ▁due ▁to ▁high ▁waters ▁in ▁the ▁Th ames ▁and ▁Col n . ▁After ▁two ▁years ▁of ▁a ▁promised ▁investigation ▁the ▁local ▁council ▁stopped ▁before ▁actually ▁starting , ▁ ▁due ▁to ▁limited ▁powers ▁to ▁investigate ▁private ▁companies ▁and ▁out ▁of ▁date ▁records ▁ ▁Flo od ▁risk ▁alle viation ▁More ▁work ▁has ▁been ▁carried ▁out ▁under ▁the ▁River ▁Ash ▁Flo od ▁Alle viation ▁Sch eme . ▁ ▁An ▁upgrade ▁of ▁the ▁fresh ▁water ▁treatment ▁works ▁at ▁Ash ford ▁Common ▁( 1 9 9 4 — 1 9 9 5