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 5.2 Victorian Murray system
Table 5.2.14 Potential environmental watering actions and objectives for the Lindsay, Mulcra and Wallpolla islands
     Potential environmental Functional watering objectives watering action
Lindsay Island – Mullaroo Creek
Environmental objectives
         Year-round low flow • (minimum of 600 ML/day)
Maintain fast-flowing habitat for native fish (such as Murray cod, silver perch and golden perch)
     • Maintain habitat for aquatic vegetation and maintain soil moisture to maintain the condition of streamside vegetation
    Spring fresh (one fresh of • up to 1,000-1,400 ML/day
for three months during September to November)
Lindsay Island – Lindsay River
Cue fish movement and spawning and improve recruitment opportunities for native fish
          Spring/summer fresh (one fresh of 65-200 ML/day via the northern regulator and one fresh of 20-200 ML/day via the southern regulator for a maximum of four months during September to December)
Autumn/winter fresh (one fresh of 130 ML/day via the northern regulator and
90 ML/day via the southern regulator for two months during May to June)
Lindsay Island wetlands
Websters Lagoon (complete fill in spring)
Scotties Billabong (complete fill in spring)
Wetland 33 (complete fill in spring)
Lindsay-Mullaroo connector (complete fill in spring)
• Provide temporary flowing water to reconnect pools and support dispersal, spawning and recruitment opportunities for native fish
• Wet the substrate and debris (snags) close to the bank to promote the growth of biofilms, which provide a food source for animals higher in the food chain
• Wet the substrate and debris (snags) close to the bank to promote the growth of biofilms, which provide a food source for animals higher in the food chain1
• Provide a connection between Websters Lagoon and the Murray River to allow the exchange of carbon, nutrients and fish between the wetland and the river
• Provide conditions for lake bed herbaceous plants and semi-aquatic plants in the littoral zone to grow in the drying phase after watering
• Provide variable water levels in the littoral zone to provide feeding habitat for shorebirds
• Provide open-water habitat as refuge and feeding and breeding habitat for waterbirds
• Provide shallow-water habitat to provide foraging and breeding opportunities for frogs
• Stimulate the growth of streamside and instream vegetation
• Provide conditions for lake bed herbaceous plants to grow in the drying phase after watering
• Fill to the wetland fringe to increase growth of shrubs and lignum on the wetland fringe
• Provide shallow-water habitat and open-water habitat to create foraging opportunities for waterbirds, frogs and turtles
• Provide conditions for lake bed herbaceous plants to grow in the drying phase after watering
• Provide a temporary connection to the Lindsay River to allow the exchange of nutrient, carbon and plant propagules
• Provide conditions for lake bed herbaceous plants and semi-aquatic plants to grow in the littoral zone in the drying phase after watering
• Stimulate the growth of severely stressed streamside vegetation
                                                  234 | Victorian Environmental Water Holder | Seasonal Watering Plan 2020–21






























































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