Kammala wannan jumla: Kula da Yankewa ya wuce zuwa Hukumar Kula da Sufuri ta Burtaniya tare da mallakar jiragen kasa. Yankewa ya lalace ta hanyar
ambaliyar ruwa na 1953, wanda ya shafi yawancin Gabashin Gabas, kuma Hukumar Kula da Sufuri ta yi ƙoƙarin rufe shi a 1954. 'Yan adawa na gida sun kasance masu ƙarfi, musamman daga al'ummar yachting, kuma an ba da iko ga East Suffolk da Norfolk River Board a 1957. Daga baya, Hukumar Kula da Ruwa ta Anglian, kuma a 1995 Hukumar Kula da Muhalli, ta ɗauki wannan rawar.