Kammala wannan jumla: A daren da ya biyo baya, guguwa mafi girma da ta taɓa addabar Netherlands, wato
Ambaliyar tekun Arewa ta 1 ga Fabrairu, 1953. Bayan bala'in an kafa Hukumar Jiha (18 ga Fabrairu 1953), kuma an nada Johan van Veen Sakataren Hukumar Jiha. A watan Mayu 1953 hukumar ta ba da rahotonta na farko na wucin gadi, yana ba da shawarar rufe Hollandse IJssel nan da nan tare da shingen guguwar guguwa da shingen ambaliyar ruwa, da kuma aiwatar da shirin Van Veen na rufe mashigar ruwa (Ayyukan Delta). A ƙarshe an aiwatar da wannan aikin; an buga rahoton ƙarshe na hukumar a cikin 1960, shekara guda bayan mutuwar Johan van Veen. A cikin Netherlands Johan van Veen an tuna shi a matsayin "mahaifin Delta Plan" kuma a Ingila a matsayin "Maigidan Ruwan Tsufana".