New South Wales Consolidated Regulations
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WATER SHARING PLAN FOR THE BELLINGER RIVER AREA UNREGULATED AND ALLUVIAL WATER SOURCES 2008 - SCHEDULE 1
SCHEDULE 1 – Dictionary
The following definitions apply to this Plan
in addition to the definitions set out in the Act:
"account water" is the balance in an access licence water allocation at a
particular time.
"extraction limit" is a limit on the amount of water that may be extracted
from an extraction management unit.
"extraction management unit" is a group of water sources for the purpose of
managing annual average extraction.
"farm dam" is a privately owned dam typically of earthen construction designed
to collect and/or store water for use on one or few properties. It does not
include publicly owned dams or weirs.
"flow classes" are categorised by the size and duration of flow levels in
unregulated rivers, for example:
(a) Very Low Flows may be a class on their
own,
(b) low flows may be categorised as A Class flows,
(c) moderate flows
may be categorised as B Class flows, and
(d) high flows may be categorised as
C Class flows.
"flow gauging station" is a device that is used to measure the height of a
river, from which the flow in the river can be calculated.
"in-river dam" is a dam on a 3rd, 4th or higher order river. 3rd, 4th or
higher or higher order rivers are as defined in the order made under section 5
of the Water Act 1912 in relation to the definition of a
"river" gazetted 23 rd March 2001.
"karst environment" means an area of land, including subterranean land, that
has developed in soluble rock through the processes of solution, abrasion or
collapse, together with its associated bedrock, soil, water, gases and
biodiversity.
"management zone" is an area within the surface water source in which daily
extraction limits may be defined or where dealing restrictions are approved.
Management zones may be designated where the surface water source to which the
plan applies is divided into areas and total daily extraction limits are
defined for each area. They may also be designated where local dealing
restrictions are in place.
"runoff harvesting dam" is a farm dam on a hillside or 1st or 2nd order stream
which collects and stores rainfall runoff. 1 st and 2 nd order streams are as
defined in the order made under section 5 of the Water Act 1912 in relation to
the definition of a river gazetted 23 rd March 2001.
"stream order" is defined by the Strahler stream ordering method.
"tidal pool" is the area of water between the upper mangrove limit and lower
tidal limits, with the mangrove limit being that as defined in the DIPNR
Survey of tidal limits and mangrove limits in NSW estuaries 1996 to 2003 (NSW
Dept of Commerce, Manly Hydraulics Laboratory).
"total daily extraction limit (TDEL)" is the volume of water that may be
extracted under access licences from an unregulated river on a daily basis
from a particular flow class.
"visible flow" is the continuous downstream movement of water that is
perceptible to the eye.
"water storage" means a state owned dam, weir or other structure, which is
used to regulate and manage river flows in this water source and the water
body impounded by the structure.
"water year" is a 12 month period from 1 July to 30 June.
The Strahler system is explained as follows: • Starting at the top of a
catchment, any watercourse that has no other watercourses flowing into it is
classed as a 1st order watercourse,
• Where two 1st order watercourses
join, the watercourse becomes a 2nd order watercourse,
• If a 2nd order
watercourse is joined by a 1st order watercourse-it remains a 2nd order
watercourse,
• When two or more 2nd order watercourses join they form a 3rd
order watercourse,
• A 3rd order watercourse does not become a 4th order
watercourse until it is joined by another 3rd order watercourse and so on.
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