View Abstract


Coastal zones are increasingly impacted by terrestrial sediments inputs. This is particularly prevalent along the Australian east coast where catchment modification coupled with regional weather patterns result in large scale sediment loading during high flow events. South East Queensland’s Moreton Bay is a large, shallow embayment directly fed by Brisbane River system which has a highly degraded stream network. There has a 50% increase in the mud surface area within Moreton Bay over the last 45 years suggesting the system is under increasing pressure from terrestrial sediment loading. Gully erosion is the primary driver of sediment loading within these networks and flood events result in extremely high (>10 g/L) suspended sediment concentrations. The current event monitoring system utilises expensive equipment which requires regular maintenance and results in a limited number of systems being deployed. An event monitoring system is required to better understand the catchment sediment loading particularly to greatly increase the spatial resolution of the monitoring network. This needs to be low cost and require little maintenance but produce useful event monitoring data. Volunteer undergraduate civil engineering students developed and deployed the use of mass manufactured sensors for system in conjunction with a simple electronic prototyping platform to create a turbidity probe for under AUD $300. Students tested, calibrated and implemented the system within the local river networks and compared performance to the existing network.


Deering, N. J., The University of Queensland, Australia,

Dunbabin, M., Queensland University of Technology, Australia,

Fisher, P., Australia

Grinham, A., The University of Queensland, Australia,


Oral presentation

Session #:026
Date: 03/02/2017
Time: 17:15
Location: 306 A

Presentation is given by student: Yes