æt nˈaɪn mˈiːɾɚz əbˌʌv ˈɔːɹdnəns dˈeɪɾəm sˈiː lˈɛvəl wˈɛɹæz ɹˌɛzᵻdˈɛnʃəl ɹˈoʊdz ɪn sˈʌnbɛɹi ɑːɹ æt pɹɪdˈɑːmɪnəntli mˈoːɹ ðɐn tˈɛn mˈiːɾɚz, ðɪ ˈaɪlənd flˈʌdz ˈɔfən wɛn ðɛɹ ɪz ˈʌðɚ nˈɑːntˈaɪdəl tˈɛmz flˈʌdɪŋ.
At 9 metres above Ordnance Datum sea level whereas residential roads in Sunbury are at predominantly more than 10 metres, the island floods often when there is other non-tidal Thames flooding.