NT Government The Territory Labor Government has today notified more than 103 property owners in the Rapid Creek catchment area of their reduced impacts to flooding, following the release of updated flood mapping. Due to work being undertaken and completed in 2019 at the Rapid Creek Catchment and stormwater detention basin there is now a reduced impact of flood for many Territory families. Combined with other flood mitigation measures, the new detention basin will significantly reduce the impact of flooding on downstream properties, including: 45 properties that are no longer on the Rapid Creek flood map; and 58 properties that are no longer on the Darwin Storm Surge primary flood extent map.