Groundwater Monitoring Optimisation
Whilst land use and the usage of groundwater reserves by farmers and industry has changed dramatically over time, the process for monitoring the resource has remained virtually unchanged over the last 100 years.
To maintain the network of groundwater monitoring stations is a massive and costly process for government to manage, given the level of usage and understanding in any given groundwater system can change over time. Where a large network of monitoring stations may have been required in the past, they may not be needed today or into the future as requirements change.
The current network of wells monitored by government has been built up over the last century. Generally a monitor was installed wherever water was extracted. Nowadays users of groundwater range from viticulture to dairy, orchards, and mining. Most monitors don’t have telemetry so to take a reading, the responsible government agency needs to send someone physically out to the site. As land use changes over time the investment in monitoring between management areas needs to be reviewed to match usage. Data61 has developed a platform to determine the optimal number of sites for different scenarios. This is accomplished by understanding how each measurement contributes to the overall confidence in the water pressures and levels throughout the region.
What is the technology?
Through the use of machine learning algorithms, the value of each individual monitoring bore can be determined to give an overall understanding of the underground water levels in that area. The
software will enable government to remove or add the right monitoring bores to a monitoring system, to ensure an adequate understanding of the groundwater pressure.
The technology quantifies the effect of removing a number of sites from a monitoring network, allowing the optimal number of monitoring stations to be determined subject to current requirements.
Data61’s unique approach
The system Data61 has built for groundwater monitoring network optimisation focuses on ascertaining the water pressure level in a given aquifer system. The software produces a heat map that captures the confidence in the spatial reconstruction that a reduced network of monitoring wells will produce.
Data61 is piloting the technology through its environmental analytics subsidiary company, Infact Analytics. The South Australian Department of Environment, Water and Nature Resources (DEWNR) is the main benefactor of the research through a pilot program.
Data61 and DEWNR are focused on a pilot of the technology in the Coonawarra region in South Australia. The Limestone coast is one of the heaviest groundwater extraction zones in South Australia. Across a 1000 square kilometer area, hundreds of monitoring stations are managed by DEWNR. The pilot began in June 2014 and will continue for one year.
Download the Groundwater Monitoring Optimisation brochure.