Kammala wannan jumla: Mafi yawan adadin da aka rubuta don dam din ya faru a
Janairu 2011. A ranar 11 ga watan Janairun 2011, Wivenhoe Dam ya kai matakin da ya fi girma, 191% na ƙarfin ajiyar ruwa na yau da kullum, yayin da yake riƙe da ambaliyar ruwa. Saboda shi ne dam dam, ba a tsara shi ba don zubar da dutsen ko sama da shi kuma akwai hadarin cewa idan ruwa ya zubar da dutsen, wannan zai iya lalata bangon dam kuma zai iya haifar da dam. A wannan yanayin yanayin ruwan zai buƙaci tashi zuwa 225% na iya aiki. Don hana wannan, an tsara da gina dam din don haɗawa da ramin gaggawa na biyu. A lokacin da ambaliyar ruwa ta faru, matakin ruwa na dam ya kai kasa da tsayin mai amfani.