The new $1.5 million program, Creating Climate Resilient Rivers, is funded under the Climate Adaptation Strategy and will be led by the Department of Water and Environmental Regulation.
Since the 1970s, rivers across Southwest WA have shown declines in streamflow of up to 80%. In the last two years, rainfall and water levels have been the lowest on record, falling to critical levels in several areas in this important region.
Creating Climate Resilient Rivers will identify priority locations for protection and enhancement, as well as undertaking a range of on-ground projects to help improve river health and climate resilience.
This includes supporting an innovative new project to breathe life into the Harvey River.
Nine 'fish hotels' will form prime real estate through a 500-metre section of the river near Riverdale Road - an area that was historically de-snagged to increase drainage.
The fish hotels, looking like small wooden pyramids, will sit on the riverbed and serve as a perfect location to attract and retain aquatic wildlife. You can view the deployment of a fish hotel in the video below.
Species that will benefit include freshwater catfish, nightfish, pygmy perch, western minnow and blue spot goby, as well as crustaceans such as marron, shrimp and gilgie. The new fish hotels will also boost habitat for turtles, rakali (water rats) and water birds. The new structures emulate what naturally occurs in rivers and streams when trees fall into the waterways.
The purpose built 'hotels' have been constructed by Waroona Men's Shed and students from the Western Australian College of Agriculture in Harvey using locally sourced timber. They follow an environmentally friendly design made from natural materials and will provide habitat without increasing the risk of erosion or flooding.
Jarrah is used to assemble the main structure, while smaller logs and twigs from native species such as paperbark, tea trees and flooded gum are added for more complex habitat to accommodate juveniles and smaller species.
The hotels provide a practical and immediate solution for enhancing aquatic habitat which will be further bolstered by revegetation of riverbanks in the long term.
The Creating Climate Resilient Rivers will be undertaking a range of projects in coming years focused on building climate resilience of rivers. These will include creating new climate refuges, enhancing instream habitat and revegetation of banks and restoring fish passage through several dams and weirs.
A significant part of the work under the Creating Climate Resilient Rivers program will include mapping biodiversity and habitat values across WA's important Southwest rivers and identifying areas of permanent water with intact streamside vegetation that support aquatic and terrestrial species during the dry season.
View the full media statement.
