The recent tragedy of kangaroo drownings in the Riverina canal has sparked a crucial conversation about the unintended consequences of modern irrigation systems on local wildlife. This incident highlights the need for a more thoughtful approach to infrastructure design, especially in areas where native animals are at risk. While the high-density polyethylene (HDPE) sheets and fencing were installed with the intention of preventing water loss, they have inadvertently created a deadly trap for kangaroos.
Anita Tovo, a concerned resident, has been witnessing the devastating impact of these structures. She notes that the number of kangaroo carcasses has been increasing, especially during winter, indicating a growing crisis. The canal's design, with its steep drop and lack of sloping edges, makes it nearly impossible for kangaroos to escape once they enter the water. This is further exacerbated by the black plastic lining, which reduces visibility and makes it even harder for the animals to find their way out.
The situation is made more challenging by the limited resources available for wildlife rescue. John Grant, a spokesperson for WIRES, emphasizes the difficulty of reaching the canal in time to save drowning kangaroos due to the long distance between volunteers. This highlights a systemic issue in rural NSW, where the response time for animal rescue is often too late.
The lack of state regulations regarding egress points and animal welfare in canals is also a significant concern. Kylie Soanes, a research fellow in urban biodiversity, suggests that waterway designs should prioritize native wildlife. She points out the absence of sloping edges and the steep drop into the canal as critical flaws. The Netherlands, known for its canal systems, provides a successful example of incorporating escape ramps and rock-lined slopes to prevent animal deaths.
Fencing, while essential for water management, must also be designed with local wildlife in mind. Dr. Soanes argues that fences should allow kangaroos to run up and over them, providing a safe exit from the canal. However, the current design, with its high fences and limited escape routes, traps kangaroos, leading to tragic consequences.
The community's call for action is clear. Ms. Tovo and WIRES members have met with Murray Irrigation, but concrete solutions have yet to emerge. The situation underscores the importance of collaboration between irrigation companies, animal welfare organizations, and researchers to develop innovative solutions. Without immediate improvements, the tragic drownings of kangaroos in Riverina canals will continue, raising questions about the long-term sustainability of such infrastructure in the region.
