Devastating flooding in January 2011 was not limited to water rising from the primary creek systems within Toowoomba. Major overland flow paths were known to be active during this event seeing hazardous flows occurring kilometres from the named creek systems. Following completion of a detailed creek flooding study, questions still remained as to the extent and hazard of overland flow paths. This project sought to map the route that water travels in order to arrive in the named creek systems – East Creek, West Creek, Black Gully Creek and Gowrie Creek.
Toowoomba Regional Council (TRC) has undertaken the Toowoomba Overland Flowpath Mapping Study (TOFPS). The primary objective of the TOFPS was to develop hydraulic models that utilised the direct rainfall approach in order to provide overland flowpath mapping for the Gowrie Creek catchment in Toowoomba.