Changes that don't require a variation to the seasonal watering plan include:
- minor operational adjustments to specific watering actions
- using the water to manage environmental emergencies
- using small volumes of environmental water for technical investigations
- facilitating water deliveries held by other water holders for downstream objectives.
operational adjustments to environmental watering occurs from time to time. For
example, the stretches of river being targeted, water flow rates, timing and
durations in the plan might change slightly due to changes in predicted
rainfall or other water orders, or infrastructure constraints. In all cases, environmental
watering still aims to maximise environmental outcomes.
water may be needed to manage an environmental emergency, such as reducing the
impact of natural blackwater or bushfire events, preventing fish deaths or
mitigating the effects of blue-green algae. Environmental water was used to increase
oxygen levels in the Lower Broken Creek during
the 2016 blue-green algae outbreak.
also be used to smooth the transition to or from a high natural water event (for
example, supplementing flows from rainfall with environmental water to provide
a more gradual rise and fall to minimise reduce river banks slumping and
volumes of environmental water can be used for research and development. If
this happens the project must aim to enhance knowledge and improve
environmental water management. It can't compromise achieving the environmental
objectives in the seasonal watering plan.
water held by other environmental water holders (such as the Commonwealth Environmental
Water Holder and the Murray-Darling Basin
Authority is stored in Victorian
storages and is sometimes called on to meet the needs of plants and animals downstream
beyond the scope of this plan (such as the Coorong, Lower Lakes and Murray
Mouth region in South Australia).
facilitate and authorise water deliveries, provided they don't have adverse
impacts on Victoria's rivers, wetlands and floodplains.