Page 308 - VEWH Seasonal Watering Plan 2020-21
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 6.2 Glossary
Macroinvertebrates – Animals without a backbone and which can be seen with the naked eye including worms, snails, mites, bugs, beetles, dragonflies and freshwater crayfish. They are also referred to as waterbugs.
Macrophytes – Aquatic plants that are either emergent (growing out of the water, for example phragmites), submergent (growing under the water, for example ribbonweed) or floating (for example floating pond weed).
Managed release – A release of water for the environment which is stored in major reservoirs and used for potential watering actions to achieve environmental outcomes.
Megalitre – One million (1,000,000) litres.
Midden – A site of cultural significance where Aboriginal people left the remains of their meals and other domestic waste.
Millennium Drought – One of the worst droughts recorded since settlement, it went from about 1995 to 2012.
Operational releases – Releases made from major storages to enable the water distribution system to operate or to make water available to consumptive water users.
Overbank flows – The portion of a flood flow that flows outside the main river channel at relatively small depths over part of or the full width of the waterway and in a direction essentially parallel with the direction of the main channel.
Passing flows – Water released from storages to operate river and distribution systems (often to help deliver water for environmental or consumptive uses) and maintain environmental values and other community benefits. The volume of passing flows is generally determined by inflows to those storages.
Permanent trade – The transfer of ownership of a water share or licence.
Potential environmental watering – Environmental flow components that have been identified for a particular system in a particular year.
Pulse – A gradual build in the flow of water, typically to replicate the most-suitable conditions for water species (such as fish to travel and spawn).
Ramsar-listed wetland – A wetland listed as internationally significant under the Convention on Wetlands signed in Ramsar, Iran in 1971.
Reach – A stretch or section of a river, generally defined in an environmental flow study.
Recruitment – The increase in plants or animals when they survive to the settlement or maturity stage.
Regional waterway strategy – An eight-year action plan prepared by a CMA for the rivers, wetlands and estuaries in its area. It provides a single regional planning document for waterways in the area.
Remnant vegetation – Patches of native trees, shrubs and grasses still remaining following disturbance.
Return flows – Any flows delivered for environmental purposes and then returned to the downstream system to be reused for other purposes. Returned flows may be captured and stored downstream for later reuse, although most commonly they remain within the waterway for in- stream reuse.
Riffle – A relatively shallow section of stream where water flows at a higher velocity with increased turbulence, causing many ripples to be formed in the water surface.
Riparian vegetation – Vegetation located in the area of land that adjoins, regularly influences or is influenced by a river.
Salt wedge – The transition zone of saltwater and freshwater environments which occurs when a freshwater river flows directly into saltwater.
Seasonal watering plan – The VEWH’s annual operational document which outlines potential environmental watering across the state in the forthcoming water year.
Seasonal watering proposal – An annual proposal outlining the regional priorities for the use of water for the environment in each water year and submitted by waterway managers to the VEWH for consideration in its seasonal watering plan.
Seasonal watering statement – A statement by the VEWH authorising a CMA to apply or use water from its water for the environment entitlements consistently with the seasonal watering plan.
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