During the 2016/17 Darwin aerial salt marsh mosquito control season, high numbers of Aedes vigilax occurred in October and November despite successful mosquito control in the Shoal Bay Swamp located west of the Shoal Bay Receiving Station. Preliminary investigations have indicated that the high numbers were due to extensive breeding in the uncontrolled swamps associated with Kings Creek to the east of the Receiving Station, with mosquito dispersal occurring from these areas into the northern Darwin suburbs, Palmerston and other areas. To reduce the impact of Ae. vigilax and potential disease risks on residents, a comprehensive investigation of Ae. vigilax breeding in the Kings Creek swamps would be required with the aim to establish a comprehensive aerial mosquito control program.