Waterbird breeding, native fish movement and endangered frogs were the focus of managed environmental flows in 2021–22.
Under wet to very wet conditions, environmental water managers worked with partner agencies and stakeholders to coordinate the delivery of water for the environment to:
- support the largest ever pelican rookery documented in the Murrumbidgee catchment
- maintain a highly significant ibis and spoonbill rookery in the Gayini (Nimmie-Caira) wetlands of ~20,000 nests
- increase the distribution of the endangered southern bell frog and Australasian bittern in the Lowbidgee floodplain and Coleambally Irrigation Area
- mitigate hypoxic blackwater events in summer to avoid fish deaths in the lower Murrumbidgee and mid Yanco billabong systems
- manage more gradual and natural water recession behind large operational releases to improve fish movement opportunities and minimise riverbank erosion.