WATER SHARING PLAN FOR THE GREATER METROPOLITAN REGION UNREGULATED RIVER WATER SOURCES 2011 - REG 56 Flow classes

WATER SHARING PLAN FOR THE GREATER METROPOLITAN REGION UNREGULATED RIVER WATER SOURCES 2011 - REG 56

56 Flow classes

(1) This Plan establishes the flow classes specified in Column 3 of Table C as the basis for the sharing of flows on a daily basis in these water sources.

(2) The flow classes in Column 3 and the flow reference points specified or referred to in Column 6 of Table C, are established for each water source specified in Column 1 and each management zone specified in Column 2 of Table C.

(3) The flow classes commence in the year specified in Column 4 of Table C.

(4) Subject to subclause (5A) and (5B), a flow class applies in the respective water source or management zone on the day specified in Column 7 of Table C when flows (the flow of water in ML/day) as measured at the flow reference point specified in Column 6 of Table C are equal to the flow specified in Column 5 of Table C and/or meet any other conditions specified in the Column.

(5) For the purpose of Table C:

(a)
"Year 1 of this Plan" means from the date of commencement of this Plan, and

(b)
"Year 6 of this Plan" means from 1 July 2016.

Note :

1 The flow classes, flow reference points, water sources or management zones to which a flow class applies, or any other matter listed in Table C may be amended as provided for in Part 13 of this Plan.

2 Only those water sources for which flow classes have been established at the commencement of this Plan are shown in Table C.

Table C--Flow Classes

Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7
Water Source	Management Zone	Flow Class	Commencement	Flow (ML/day)	Flow Reference Point	Day on which flow class applies
Shoalhaven River Water Source	Upper Shoalhaven River Management Zone	Very Low Flow Class	Year 1 of this Plan	10 ML/day or less on a rising river or 5 ML/day or less on a falling river	Shoalhaven River at Kadoona gauge (215008)	Same day
	Very Low Flow Class	Year 6 of this Plan	14 ML/day or less on a rising river or 10 ML/day or less on a falling river	Same day
	A Class	Year 1 of this Plan	More than 10 ML/day and 45 ML/day or less on a rising river or more than 5 ML/day and 45 ML/day or less on a falling river	Same day
	A Class	Year 6 of this Plan	More than 14 ML/day and 45 ML/day or less on a rising river or more than 10 ML/day and 45 ML/day or less on a falling river	Same day
	B Class	Year 1 of this Plan	More than 45 ML/day	Same day
	Mid Shoalhaven River Management Zone	Very Low Flow Class	Year 1 of this Plan	46 ML/day or less on a rising river or 24 ML/day or less on a falling river	Shoalhaven River at Warri gauge (215002)	Same day
	Very Low Flow Class	Year 6 of this Plan	63 ML/day or less on a rising river or 48 ML/day or less on a falling river	Same day
	A Class	Year 1 of this Plan	More than 46 ML/day on a rising river or more than 24 ML/day on a falling river	Same day
	A Class	Year 6 of this Plan	More than 63 ML/day on a rising river or more than 48 ML/day on a falling river	Same day
	Reedy Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	0.6 ML/day or less on a rising river or 0.2 ML/day or less on a falling river	Reedy Creek at Manar gauge (215238)	Same day
	A Class	Year 1 of this Plan	More than 0.6 ML/day on a rising river or more than 0.2 ML/day on a falling river	Same day
	Boro Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	3.2 ML/day or less	Boro Creek at Marlowe gauge (215239)	Same day
	A Class	Year 1 of this Plan	More than 3.2 ML/day	Same day
	Mongarlowe River Management Zone	Very Low Flow Class	Year 1 of this Plan	12.8 ML/day or less on a rising river or 7.6 ML/day or less on a falling river	Mongarlowe River at Mongarlowe gauge (215210)	Same day
	A Class	Year 1 of this Plan	More than 12.8 ML/day on a rising river or more than 7.6 ML/day on a falling river	Same day
	Corang and Endrick Rivers Management Zone	Very Low Flow Class	Year 1 of this Plan	2 ML/day or less on a rising river or 0.6 ML/day or less on a falling river	Corang River at Hockeys gauge (215004)	Same day
	A Class	Year 1 of this Plan	More than 2 ML/day on a rising river or more than 0.6 ML/day on a falling river	Same day
	Bungonia Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	0.2 ML/day or less	Bungonia Creek at Bungonia gauge (215014)	Same day
	A Class	Year 1 of this Plan	More than 0.2 ML/day	Same day
	Shoalhaven River Gorge Management Zone	Very Low Flow Class	Year 1 of this Plan	77 ML/day or less on a rising river or 40 ML/day or less on a falling river	Shoalhaven River at Fossickers Flat gauge (215207)	Same day
	A Class	Year 1 of this Plan	More than 77 ML/day on a rising river or more than 40 ML/day on a falling river	Same day
	Lower Kangaroo River Management Zone	Very Low Flow Class	Year 1 of this Plan	7 ML/day or less	Kangaroo River at Hampden Bridge gauge (215220)	Same day
	A Class	Year 1 of this Plan	More than 7 ML/day	Same day
	Kangaroo River Management Zone	Very Low Flow Class	Year 1 of this Plan	7 ML/day or less	Kangaroo River at Hampden Bridge gauge (215220)	Same day
	A Class	Year 1 of this Plan	More than 7 ML/day and 30 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 30 ML/day and 118 ML/day or less	Same day
	C Class	Year 1 of this Plan	More than 118 ML/day	Same day
	Yarrunga Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	1 Where releases are being made under clause 28 (1) (a), when flows are equal to or less than those releases, 2 When releases are not being made under clause 28 (1) (a), or 3 Where clause 28 (1) (b) applies and flows are equal to or less than the required release under clause 28 (1) (a)	Points for determining releases as specified in clause 28 (1)	Same day
	A Class	Year 1 of this Plan	1 Where releases are being made under clause 28 (1) (a), when flows are more than those releases, 2 Where clause 28 (1) (b) applies and flows are more than the required release under clause 28 (1) (a)	Same day
	Fitzroy Falls Management Zone	Very Low Flow Class	Year 1 of this Plan	0.4 ML/day or less	Yarrunga Creek at Wildes Meadow gauge (215233)	Same day
	A Class	Year 1 of this Plan	More than 0.4 ML/day	Same day
	Lower Shoalhaven River Management Zone	Very Low Flow Class	Year 1 of this Plan	69 ML/day or less	Shoalhaven River at Grassy Gully No 2 gauge (215216)	Same day
	A Class	Year 1 of this Plan	More than 69 ML/day	Same day
	Bomaderry Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	1 ML/day or less on a rising river or 0.4 ML/day or less on falling river	Bomaderry Creek at Bomaderry gauge (215016)	Same day
	A Class	Year 1 of this Plan	More than 1 ML/day on a rising river or more than 0.4 ML/day on a falling river	Same day
	Broughton Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	1.8 ML/day or less	Broughton Creek at Broughton Vale gauge (215018)	Same day
	A Class	Year 1 of this Plan	More than 1.8 ML/day and 9.8 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 9.8 ML/day	Same day
	Broughton Mill Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	1.8 ML/day or less	Broughton Creek at Broughton Vale gauge (215018)	Same day
	A Class	Year 1 of this Plan	More than 1.8 ML/day and 9.8 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 9.8 ML/day	Same day
	Jaspers Brush Creek and Tributaries Management Zone	Very Low Flow Class	Year 1 of this Plan	No visible flow	Causeway Culvert on Martinvale Road	Same day
	A Class	Year 1 of this Plan	Visible flow	Same day
Illawarra Rivers Water Source	Minnamurra River Management Zone	Very Low Flow Class	Year 1 of this Plan	1 ML/day or less	Minnamurra River at Browns Lane gauge (214010)	Same day
	Very Low Flow Class	Year 6 of this Plan	3 ML/day or less	Same day
	A Class	Year 1 of this Plan	More than 1 ML/day and 19 ML/day or less	Same day
	A Class	Year 6 of this Plan	More than 3 ML/day and 6.4 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 19 ML/day	Same day
	B Class	Year 6 of this Plan	More than 6.4 ML/day and 19 ML/day or less	Same day
	C Class	Year 6 of this Plan	More than 19 ML/day	Same day
	Macquarie Rivulet Management Zone	Very Low Flow Class	Year 1 of this Plan	6.5 ML/day or less on a rising river or 4.8 ML/day or less on a falling river	Macquarie Rivulet at Albion Park gauge (214003)	Same day
	Very Low Flow Class	Year 6 of this Plan	8.0 ML/day or less on a rising river or 6.5 ML/day or less on a falling river	Same day
	A Class	Year 1 of this Plan	More than 6.5 ML/day and 20.8 ML/day or less on a rising river or more than 4.8 ML/day and 20.8 ML/day or less on a falling river	Same day
	A Class	Year 6 of this Plan	More than 8.0 ML/day and 9 ML/day or less on a rising river or more than 6.5 ML/day and 9 ML/day or less on a falling river	Same day
	B Class	Year 1 of this Plan	More than 20.8 ML/day	Same day
	B Class	Year 6 of this Plan	More than 9 ML/day and 20.8 ML/day or less	Same day
	C Class	Year 6 of this Plan	More than 20.8 ML/day	Same day
Upper Nepean and Upstream Warragamba Water Source	Mulwaree River Management Zone	Very Low Flow Class	Year 1 of this Plan	1 ML/day or less	Mulwaree River at the Towers gauge (2122725)	Same day
	A Class	Year 1 of this Plan	More than 1 ML/day	Same day
	Upper Wollondilly River Management Zone	Very Low Flow Class	Year 1 of this Plan	1 ML/day or less	Wollondilly River at Murrays Flat gauge (2122711)	Same day
	Very Low Flow Class	Year 6 of this Plan	2 ML/day or less	Same day
	A Class	Year 1 of this Plan	More than 1 ML/day	Same day
	A Class	Year 6 of this Plan	More than 2 ML/day and 6 ML/day or less	Same day
	B Class	Year 6 of this Plan	More than 6 ML/day and 33 ML/day or less	Same day
	C Class	Year 6 of this Plan	More than 33 ML/day	Same day
	Lower Wollondilly River Management Zone	Very Low Flow Class	Year 1 of this Plan	3 ML/day or less on a rising river or 1 ML/day or less on a falling river	Wollondilly River at Golden Valley gauge (212271)	Same day
	Very Low Flow Class	Year 6 of this Plan	5 ML/day or less on a rising river or 3 ML/day or less on a falling river	Same day
	A Class	Year 1 of this Plan	More than 3 ML/day on a rising river or more than 1 ML/day on a falling river	Same day
	A Class	Year 6 of this Plan	More than 5 ML/day on a rising river or more than 3 ML/day on a falling river	Same day
	Upper Wingecarribee River Management Zone	Very Low Flow Class	Year 1 of this Plan	6 ML/day or less	Wingecarribee River at Bong Bong Weir gauge (212031)	Same day
	Very Low Flow Class	Year 6 of this Plan	9 ML/day or less	Same day
	A Class	Year 1 of this Plan	More than 6 ML/day and 32 ML/day or less	Same day
	A Class	Year 6 of this Plan	More than 9 ML/day and 14 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 32 ML/day	Same day
	B Class	Year 6 of this Plan	More than 14 ML/day and 32 ML/day or less	Same day
	C Class	Year 6 of this Plan	More than 32 ML/day	Same day
	Lower Wingecarribee River Management Zone	Very Low Flow Class	Year 1 of this Plan	16 ML/day or less on a rising river or 12 ML/day or less on a falling river	Wingecarribee River at Greenstead gauge (212009)	Same day
	Very Low Flow Class	Year 6 of this Plan	16 ML/day or less	Same day
	A Class	Year 1 of this Plan	More than 16 ML/day and 63 ML/day or less on a rising river or more than 12 ML/day and 63 ML/day or less on a falling river	Same day
	A Class	Year 6 of this Plan	More than 16 ML/day and 24 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 63 ML/day	Same day
	B Class	Year 6 of this Plan	More than 24 ML/day and 63 ML/day or less	Same day
	C Class	Year 6 of this Plan	More than 63 ML/day	Same day
	Nattai River Management Zone	Very Low Flow Class	Year 1 of this Plan	2.5 ML/day or less	Nattai River at the Crags gauge (2122801)	Same day
	A Class	Year 1 of this Plan	More than 2.5 ML/day	Same day
	Little River Management Zone	Very Low Flow Class	Year 1 of this Plan	3 ML/day or less	Little River at the Fire Road W41 gauge (2122809)	Same day
	A Class	Year 1 of this Plan	More than 3 ML/day	Same day
	Werriberri Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	2 ML/day or less	Werriberri Creek at Werombi gauge (212244)	Same day
	A Class	Year 1 of this Plan	More than 2 ML/day	Same day
	Maldon Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7), when the volume is greater than zero and the stage of the Maldon Weir is less than the signal stage	Nepean River at Maldon Weir gauge (212208)	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Maguires Crossing Management Zone	Very Low Flow Class	Year 1 of this Plan	14 ML/day or less	Nepean River at Maguires Crossing gauge (212209)	Same day
	A Class	Year 1 of this Plan	More than 14 ML/day	Same day
	Stonequarry Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	0.4 ML/day or less on a rising river or 0.3 ML/day or less on a falling river	Stonequarry Creek at Picton gauge (212053)	Same day
	Very Low Flow Class	Year 6 of this Plan	0.7 ML or less on a rising river or 0.6 ML/day or less on a falling river	Same day
	A Class	Year 1 of this Plan	More than 0.4 ML/day on a rising river or more than 0.3 ML/day on a falling river	Same day
	A Class	Year 6 of this Plan	More than 0.7 ML/day on a rising river or more than 0.6 ML/day on a falling river	Same day
	Wywandy Management Zone	Very Low Flow Class	Year 1 of this Plan	4 ML/day or less on a rising river or 2 ML/day or less on a falling river	Coxs River at Wallerawang Power Station gauge (212054)	Same day
	A Class	Year 1 of this Plan	More than 4 ML/day and 6 ML/day or less on a rising river or more than 2 ML/day and 6 ML/day or less on a falling river	Same day
	B Class	Year 1 of this Plan	More than 6 ML/day and 14 ML/day or less	Same day
	C Class	Year 1 of this Plan	More than 14 ML/day	Same day
	Dharabuladh Management Zone	Very Low Flow Class	Year 1 of this Plan	17 ML/day or less on a rising river or 15 ML/day or less on a falling river	Coxs River at Island Hill gauge (212045)	Same day
	A Class	Year 1 of this Plan	More than 17 ML/day and 28 ML/day or less on a rising river or more than 15 ML/day and 28 ML/day or less on a falling river	Same day
	B Class	Year 1 of this Plan	More than 28 ML/day and 73 ML/day or less	Same day
	C Class	Year 1 of this Plan	More than 73 ML/day and 87 ML/day or less	Same day
	D Class	Year 1 of this Plan	More than 87 ML/day	Same day
Hawkesbury and Lower Nepean Rivers Water Source	Menangle Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Menangle Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Menangle Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Camden Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Camden Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Camden Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Sharpes Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Sharpes Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Sharpes Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Cobbity Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Cobbity Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Cobbity Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Mount Hunter Rivulet Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Mount Hunter Rivulet Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Mount Hunter Rivulet Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Brownlow Hill Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Brownlow Hill Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Brownlow Hill Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Theresa Park Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Theresa Park Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Theresa Park Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Wallacia Weir Management Zone	Very Low Flow Class	Year 1 of this Plan	The sum of the volume of water released in the prior 24-hour period from Pheasants Nest Weir under clause 32 (7) and Broughtons Pass Weir under clause 32 (8), when the sum is greater than zero, and the stage of the Wallacia Weir is less than the signal stage	Nepean River at Sydney Catchment Authority's Wallacia Weir stage gauge	Same day
	A Class	Year 1 of this Plan	All times when flows are not in the Very Low Flow Class	Same day
	Lower Nepean River Management Zone	Very Low Flow Class	Year 1 of this Plan	The Very Low Flow Class as defined in clause 56 (6)	Nepean River at Yarramundi gauge (2122001)	Same day
	Very Low Flow Class	Year 6 of this Plan	The Very Low Flow Class as defined in clause 56 (7)	Same day
	A Class	Year 1 of this Plan	A Class is defined as clause 56 (8)	Same day
	A Class	Year 6 of this Plan	A Class as defined as clause 56 (9)	Same day
	B Class	Year 1 of this Plan	B Class as defined as clause 56 10)	Same day
	B Class	Year 6 of this Plan	B Class as defined as clause 56 (11)	Same day
	Warragamba River Management Zone	Very Low Flow Class	Year 1 of this Plan	From 1 November to 31 March, 30 ML/day or less. From 1 April to 31 October, 22 ML/day or less	Discharge point from Warragamba Dam into Megarritys Creek	Same day
	A Class	Year 1 of this Plan	From 1 November to 31 March, more than 30 ML/day. From 1 April to 31 October, more than 22 ML/day	Same day
	Grose River Management Zone	Very Low Flow Class	Year 1 of this Plan	30 ML/day or less on a rising river or 24 ML/day or less on a falling river	Grose River at Burralow gauge (212291)	Same day
	Very Low Flow Class	Year 6 of this Plan	30 ML/day or less	Same day
	A Class	Year 1 of this Plan	More than 30 ML/day on a rising river or more than 24 ML/day on a falling river	Same day
	A Class	Year 6 of this Plan	More than 30 ML/day	Same day
	Colo River Management Zone	Very Low Flow Class	Year 1 of this Plan	24 ML/day or less	Colo River at Upper Colo gauge (212290)	Same day
	A Class	Year 1 of this Plan	More than 24 ML/day and 244 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 244 ML/day	Same day
	Capertee River Management Zone	Very Low Flow Class	Year 1 of this Plan	2 ML/day or less	Capertee River at Glen Davis gauge (212018)	Same day
	A Class	Year 1 of this Plan	More than 2 ML/day and 11 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 11 ML/day	Same day
	Upper Hawkesbury River (Grose River to South Creek) Management Zone	Very Low Flow Class	Year 1 of this Plan	The Very Low Flow Class as defined in clause 56 (13)	Gauges as specified in clause 56 (13)-(14)	Same day
	A Class	Year 1 of this Plan	A Class as defined in clause 56 (14)	Same day
	Upper Hawkesbury River (South Creek to Cattai Creek) Management Zone	Very Low Flow Class	Year 1 of this Plan	The Very Low Flow Class as defined in clause 56 (15)	Gauges as specified in clause 56 (15)-(16)	Same day
	A Class	Year 1 of this Plan	A Class as defined in clause 56 (16)	Same day
	Upper Hawkesbury River (Cattai Creek to Colo River) Management Zone	Very Low Flow Class	Year 1 of this Plan	The Very Low Flow Class as defined in clause 56 (17)	Gauges as specified in clause 56 (17)-(18)	Same day
	A Class	Year 1 of this Plan	A Class as defined in clause 56 (18)	Same day
	Lower Hawkesbury River Management Zone	Very Low Flow Class	Year 1 of this Plan	The Very Low Flow Class as defined in clause 56 (19)	Gauges as specified in clause 56 (19)-(20)	Same day
	A Class	Year 1 of this Plan	A Class as defined in clause 56 (20)	Same day
	Macdonald River Management Zone	Very Low Flow Class	Year 1 of this Plan	1 ML/day or less	MacDonald River at St Albans gauge (212228)	Same day
	A Class	Year 1 of this Plan	More than 1 ML/day and 16 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 16 ML/day	Same day
	Upper South Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	0.2 ML/day or less	South Creek at the Great Western Highway gauge (212048)	Same day
	A Class	Year 1 of this Plan	More than 0.2 ML/day and 6.2 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 6.2 ML/day	Same day
	Lower South Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	3 ML/day or less	South Creek at Richmond Road gauge (212297)	Same day
	A Class	Year 1 of this Plan	More than 3 ML/day and 58 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 58 ML/day	Same day
	Cattai Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	3 ML/day or less	Cattai Creek at Cattai Ridge Road gauge (2122951)	Same day
	A Class	Year 1 of this Plan	More than 3 ML/day and 15 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 15 ML/day	Same day
Southern Sydney Rivers Water Source	Lower Woronora River Management Zone	Very Low Flow Class	Year 1 of this Plan	1 Where releases are being made under clause 36, when flows are less than those releases, or 2 When releases are not being made under clause 36	Points for determining releases as specified in clause 36	Same day
	A Class	Year 1 of this Plan	Where releases are being made under clause 36, when flows are more than those releases	Same day
	Lower Georges River and Bunbury Curran Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	0.25 ML/day or less	Bunbury Curran Creek at Railway Parade gauge (213012)	Same day
	Very Low Flow Class	Year 6 of this Plan	0.3 ML/day or less	Same day
	A Class	Year 1 of this Plan	More than 0.25 ML/day and 5.7 ML/day or less	Same day
	A Class	Year 6 of this Plan	More than 0.3 ML/day and 5.7 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 5.7 ML/day	Same day
	Cabramatta Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	0.1 ML/day or less	Cabramatta Creek at Orange Grove gauge (213011)	Same day
	A Class	Year 1 of this Plan	More than 0.1 ML/day and 2.4 ML/day or less	Same day
	B Class	Year 1 of this Plan	More than 2.4 ML/day	Same day
	Prospect Creek Management Zone	Very Low Flow Class	Year 1 of this Plan	1.6 ML/day or less	Prospect Creek at Smithfield Road gauge (213009)	Same day
	A Class	Year 1 of this Plan	More than 1.6 ML/day	Same day
Northern Sydney Rivers Water Source	Upper Parramatta River Management Zone	Very Low Flow Class	Year 1 of this Plan	1 ML/day or less	Toongabbie Creek at Briens Road gauge (213005)	Same day
	A Class	Year 1 of this Plan	More than 1 ML/day	Same day

Notes :

1 For Shoalhaven River at Kadoona gauge (215008):

• 5 ML/day corresponds to the estimated 98 th percentile flow,

• 10 ML/day corresponds to the estimated 90 th percentile flow,

• 14 ML/ day corresponds to the estimated 85 th percentile flow, and

• 45 ML/day corresponds to the estimated 50 th percentile flow.

2 For Shoalhaven River at Warri gauge (215002):

• 24 ML/day corresponds to the estimated 95 th percentile flow,

• 46 ML/day corresponds to the estimated 90 th percentile flow,

• 48 ML/ day corresponds to the estimated 89 th percentile flow, and

• 63 ML/day corresponds to the estimated 85 th percentile flow.

3 For Reedy Creek at Manar gauge (215238):

• 0.2 ML/day corresponds to the estimated 95 th percentile flow, and

• 0.6 ML/day corresponds to the estimated 90 th percentile flow.

4 For Boro Creek at Marlowe gauge (215239), 3.2 ML/day corresponds to the estimated 95 th percentile flow.

5 For Mongarlowe River at Mongarlowe gauge (215210):

• 7.6 ML/day corresponds to the estimated 95 th percentile flow, and

• 12.8 ML/day corresponds to the estimated 90 th percentile flow.

6 For Corang River at Hockeys gauge (215004):

• 0.6 ML/day corresponds to the estimated 95 th percentile flow, and

• 2 ML/day corresponds to the estimated 90 th percentile flow.

7 For Bungonia Creek at Bungonia gauge (215014), 0.2 ML/day corresponds to the estimated 90 th percentile flow.

8 For Shoalhaven River at Fossickers Flat gauge (215207):

• 40 ML/day corresponds to the estimated 95 th percentile flow, and

• 77 ML/day corresponds to the estimated 90 th percentile flow.

9 For Kangaroo River at Hampden Bridge gauge (215220):

• 7 ML/day corresponds to the estimated 98 th percentile flow,

• 30 ML/day corresponds to the estimated 90 th percentile flow, and

• 118 ML/day corresponds to the estimated 63 rd percentile flow.

10 For Yarrunga Creek at Wildes Meadow gauge (215233), 0.4 ML/day corresponds to the estimated 98 th percentile flow.

11 For Shoalhaven River at Grassy Gully No. 2 gauge (215216), 69 ML/day corresponds to the estimated 95 th percentile flow.

12 For Bomaderry Creek at Bomaderry gauge (215016):

• 0.4 ML/day corresponds to the estimated 80 th percentile flow, and

• 1 ML/day corresponds to the estimated 75 th percentile flow.

13 For Broughton Creek at Broughton Vale gauge (215018):

• 1.8 ML/day corresponds to the estimated 87 th percentile flow, and

• 9.8 ML/day corresponds to the estimated 51 st percentile flow.

14 For Minnamurra River at Browns Lane gauge (214010):

• 1 ML/day corresponds to the estimated 95 th percentile flow,

• 3 ML/day corresponds to the estimated 90 th percentile flow,

• 6.4 ML/day corresponds to the estimated 80 th percentile flow, and

• 19 ML/day corresponds to the estimated 50 th percentile flow.

15 For Macquarie Rivulet at Albion Park gauge (214003):

• 4.8 ML/day corresponds to the estimated 95 th percentile flow,

• 6.5 ML/day corresponds to the estimated 90 th percentile flow,

• 8.0 ML/day corresponds to the estimated 85 th percentile flow,

• 9.0 ML/day corresponds to the estimated 80 th percentile flow, and

• 20.8 ML/day corresponds to the estimated 50 th percentile flow.

16 For Mulwaree River at the Towers gauge (2122725), 1 ML/day corresponds to the estimated 90 th percentile flow.

17 For Wollondilly River at Murrays Flat gauge (2122711):

• 1 ML/day corresponds to the estimated 95 th percentile flow,

• 2 ML/day corresponds to the estimated 90 th percentile flow,

• 6 ML/day corresponds to the estimated 80 th percentile flow, and

• 33 ML/day corresponds to the estimated 50 th percentile flow.

18 For Wollondilly River at Golden Valley gauge (212271):

• 1 ML/day corresponds to the estimated 95 th percentile flow,

• 3 ML/day corresponds to the estimated 90 th percentile flow, and

• 5 ML/day corresponds to the estimated 85 th percentile flow.

19 For Wingecarribee River at Bong Bong Weir gauge (212031):

• 6 ML/day corresponds to the estimated 95 th percentile flow,

• 9 ML/day corresponds to the estimated 90 th percentile flow,

• 14 ML/day corresponds to the estimated 80 th percentile flow, and

• 32 ML/day corresponds to the estimated 50 th percentile flow.

20 For Wingecarribee River at Greenstead gauge (212009):

• 12 ML/day corresponds to the estimated 95 th percentile flow,

• 16 ML/day corresponds to the estimated 90 th percentile flow,

• 24 ML/day corresponds to the estimated 80 th percentile flow, and

• 63 ML/day corresponds to the estimated 50 th percentile flow.

21 For Natti River at the Crags gauge (2122801), 2.5 ML/day corresponds to the estimated 95 th percentile flow.

22 For Little River at the Fire Road W41 gauge (2122809), 3 ML/day corresponds to the estimated 95 th percentile flow.

23 For Werriberri Creek at Werombi gauge (212244), 2 ML/day corresponds to the estimated 95 th percentile flow.

24 For Nepean River at Maguires Crossing gauge (212209), 14 ML/day corresponds to the estimated 80 th percentile flow.

25 For Stonequarry Creek at Picton gauge (212053):

• 0.3 ML/day corresponds to the estimated 95 th percentile flow,

• 0.4 ML/day corresponds to the estimated 90 th percentile flow,

• 0.6 ML/day corresponds to the estimated 80 th percentile flow, and

• 0.7 ML/day corresponds to the estimated 75 th percentile flow.

26 For Coxs River at Wallerawang Power Station gauge (212054):

• 2 ML/day corresponds to the estimated 95 th percentile flow,

• 4 ML/day corresponds to the estimated 93 rd percentile flow,

• 6 ML/day corresponds to the estimated 90 th percentile flow, and

• 14 ML/day corresponds to the estimated 74 th percentile flow.

27 For Coxs River at Island Hill gauge (212045):

• 15 ML/day corresponds to the estimated 94 th percentile flow,

• 17 ML/day corresponds to the estimated 93 rd percentile flow,

• 28 ML/day corresponds to the estimated 86 th percentile flow,

• 73 ML/day corresponds to the estimated 56 th percentile flow, and

• 87 ML/day corresponds to the estimated 50 th percentile flow.

28 For Grose River at Burralow gauge (212291):

• 24 ML/day corresponds to the estimated 95 th percentile flow, and

• 30 ML/day corresponds to the estimated 90 th percentile flow.

29 For Colo River at Upper Colo gauge (212290):

• 24 ML/day corresponds to the estimated 95 th percentile flow, and

• 244 ML/day corresponds to the estimated 50 th percentile flow.

30 For Capertee River at Glen Davis gauge (212018):

• 2 ML/day corresponds to the estimated 80 th percentile flow, and

• 11 ML/day corresponds to the estimated 50 th percentile flow.

31 For MacDonald River at St Albans gauge (212228):

• 1 ML/day corresponds to the estimated 80 th percentile flow, and

• 16 ML/day corresponds to the estimated 50 th percentile flow.

32 For South Creek at the Great Western Highway gauge (212048):

• 0.2 ML/day corresponds to the estimated 90 th percentile flow, and

• 6.2 ML/day corresponds to the estimated 50 th percentile flow.

33 For South Creek at Richmond Road gauge (212297):

• 3 ML/day corresponds to the estimated 80 th percentile flow, and

• 58 ML/day corresponds to the estimated 50 th percentile flow.

34 For Cattai Creek at Cattai Ridge Road gauge (2122951):

• 3 ML/day corresponds to the estimated 95 th percentile flow, and

• 15 ML/day corresponds to the estimated 50 th percentile flow.

35 For Bunbury Curran Creek at Railway Parade gauge (213012):

• 0.25 ML/day corresponds to the estimated 95 th percentile flow,

• 0.3 ML/day corresponds to the estimated 90 th percentile flow, and

• 5.7 ML/day corresponds to the estimated 50 th percentile flow.

36 For Cabramatta Creek at Orange Grove gauge (213011):

• 0.1 ML/day corresponds to the estimated 85 th percentile flow, and

• 2.4 ML/day corresponds to the estimated 50 th percentile flow.

37 For Prospect Creek at Smithfield Road gauge (213009), 1.6 ML/day corresponds to the estimated 95 th percentile flow.

38 For Toongabbie Creek at Briens Road gauge (213005), 1 ML/day corresponds to the estimated 96 th percentile flow.

39 The flow percentiles above refer to flows at the gauge and include all days of record.

(5A) For flow classes that are determined based on flows at more than one flow measuring gauge, on any day that it is not possible to determine the flow at a flow reference point specified in Column 6 of Table C due to flow data not being available from a flow measuring gauge, then the flow class applies for the relevant management zone when flows as measured at the remaining functioning gauge specified in Column 6 of Table C are equal to the flows specified in Column 5 of Table C for that gauge.

(5B) Subject to subclause (5A), if, in the Minister's opinion, accurate flow data is not available on a particular day from a flow measuring gauge used to determine a flow class, the Minister may determine the flow class that applies for that day and notify the licence holder in writing of the flow class that applies for that day. For the purpose of this subclause, notification includes publishing a notice on the Department's website.

(5C) For the purpose of determining the flow class that applies on a particular day under subclause (5B), the Minister may take into consideration evidence of past and current flows and readings at other functioning upstream and downstream gauges.

Note : On days that accurate flow data is not available, holders of access licences may contact the Department's office at the address listed in Appendix 3 or check the Department's website to find out what flow class applies on that day.

(6) From Years 1 to 5 of this Plan, the Very Low Flow Class for the Lower Nepean River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when flows in the Nepean River at Yarramundi gauge (2122001) are equal to or less than:

(a) when , and

(b) when .

"A" = the volume of water released from Wallacia Weir over the previous 24-hour period under clause 34 (9),


"B" = the respective factor specified in Column 2 of Table D when total inflows to Avon Dam, Cataract Dam, Cordeaux Dam and Nepean Dam are at the percentile specified in rows (a)-(f) of Column 1 of Table D, or for intermediate percentiles to those specified in rows (a)-(f) of Column 1 of Table D, the factor derived by linear interpolation between the two factors specified in Column 2 of Table D, and


"C" = the volume of water released from St Marys Water Recycling Plant to the Nepean River over the previous 24-hour period.

(7) Subject to subclause (12), from Year 6 of this Plan, the Very Low Flow Class for the Lower Nepean River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when flows in the Nepean River at Yarramundi gauge (2122001) are equal to or less than:

(a) when , and

(b) when .

"A" = the volume of water released from Wallacia Weir over the previous 24-hour period under clause 34 (9),


"B" = the respective factor specified in Column 2 of Table D when total inflows to Avon Dam, Cataract Dam, Cordeaux Dam and Nepean Dam are at the percentile specified in rows (a)-(f) of Column 1 of Table D, or for intermediate percentiles to those specified in rows (a)-(f) of Column 1 of Table D, the factor derived by linear interpolation between the two factors specified in Column 2 of Table D,


"C" = the volume of water released from St Marys Water Recycling Plant to the Nepean River over the previous 24-hour period, and


"D" = the lesser of gauged tributary inflows between Warragamba Dam and the confluence of the Nepean River and the Grose River or the 95th percentile for those gauged tributary inflows.

(8) From Years 1 to 5 of this Plan, A Class for the Lower Nepean River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when flows in the Nepean River at Yarramundi gauge (2122001) are greater than:

(a) and equal to or less than , when , and

(b) and equal to or less than , when .

"A" = the volume of water released from Wallacia Weir over the previous 24-hour period under clause 34 (9),


"B" = the respective factor specified in Column 2 of Table D when total inflows to Avon Dam, Cataract Dam, Cordeaux Dam and Nepean Dam are at the percentile specified in rows (a)-(f) of Column 1 of Table D, or for intermediate percentiles to those specified in rows (a)-(f) of Column 1 of Table D, the factor derived by linear interpolation between the two factors specified in Column 2 of Table D,


"C" = the volume of water released from St Marys Water Recycling Plant to the Nepean River over the previous 24-hour period, and


"E" = 25 ML from 1 November to 31 March and 17 ML from 1 April to 31 October.

(9) Subject to subclause (12), from Year 6 of this Plan, A Class for the Lower Nepean River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when flows in the Nepean River at Yarramundi gauge (2122001) are greater than:

(a) and equal to or less than , when , and

(b) and equal to or less than , when .

"A" = the volume of water released from Wallacia Weir over the previous 24-hour period under clause 34 (9),


"B" = the respective factor specified in Column 2 of Table D when total inflows to Avon Dam, Cataract Dam, Cordeaux Dam and Nepean Dam are at the percentile specified in rows (a)-(f) of Column 1 of Table D, or for intermediate percentiles to those specified in rows (a)-(f) of Column 1 of Table D, the factor derived by linear interpolation between the two factors specified in Column 2 of Table D,


"C" = the volume of water released from St Marys Water Recycling Plant to the Nepean River over the previous 24-hour period,


"D" = the lesser of gauged tributary inflows between Warragamba Dam and the confluence of the Nepean River and the Grose River or the 95 th percentile for those gauged tributary inflows, and


"E" = 25 ML from 1 November to 31 March and 17 ML from 1 April to 31 October.

(10) From Years 1 to 5 of this Plan, B Class for the Lower Nepean River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when flows in the Nepean River at Yarramundi gauge (2122001) are greater than:

(a) when , and

(b) when .

"A" = the volume of water released from Wallacia Weir over the previous 24-hour period under clause 34 (9),


"B" = the respective factor specified in Column 2 of Table D when total inflows to Avon Dam, Cataract Dam, Cordeaux Dam and Nepean Dam are at the percentile specified in rows (a)-(f) of Column 1 of Table D, or for intermediate percentiles to those specified in rows (a)-(f) of Column 1 of Table D, the factor derived by linear interpolation between the two factors specified in Column 2 of Table D,


"C" = the volume of water released from St Marys Water Recycling Plant to the Nepean River over the previous 24-hour period, and


"E" = 25 ML from 1 November to 31 March and 17 ML from 1 April to 31 October.

(11) Subject to subclause (12), from Year 6 of this Plan, B Class for the Lower Nepean River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when flows in the Nepean River at Yarramundi gauge (2122001) are greater than:

(a) when , and

(b) when .

"A" = the volume of water released from Wallacia Weir over the previous 24-hour period under clause 34 (9),


"B" = the respective factor specified in Column 2 of Table D when total inflows to Avon Dam, Cataract Dam, Cordeaux Dam and Nepean Dam are at the percentile specified in rows (a)-(f) of Column 1 of Table D, or for intermediate percentiles to those specified in rows (a)-(f) of Column 1 of Table D, the factor derived by linear interpolation between the two factors specified in Column 2 of Table D,


"C" = the volume of water released from St Marys Water Recycling Plant to the Nepean River over the previous 24-hour period,


"D" = the lesser of gauged tributary inflows between Warragamba Dam and the confluence of the Nepean River and the Grose River or the 95 th percentile for those gauged tributary inflows, and


"E" = 25 ML from 1 November to 31 March and 17 ML from 1 April to 31 October.

	Column 1	Column 2
	Percentile of total inflows to dams	Factor
(a)	100	0.00
(b)	80	0.20
(c)	65	0.56
(d)	55	0.79
(e)	50	0.90
(f)	0	1.00
(g)	All intermediate %iles to the above	Interpolate between the two factors

(12) Unless hydrologic modelling and analysis and a socioeconomic review conducted prior to Year 6 of this Plan demonstrate that access to very low tributary inflows between Warragamba Dam and the confluence of the Nepean River and the Grose River is not necessary for the ongoing viability of the irrigation industries in the Hawkesbury and Lower Nepean Rivers Water Source, the value of D in subclauses (7), (9) and (11) is 0.

(13) From Year 1 of this Plan, the Very Low Flow Class for the Upper Hawkesbury River (Grose River to South Creek) Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause:

"X1" = the flow at Nepean River at Yarramundi gauge (2122001),


"Y1" = the flow at the Grose River at Burralow gauge (212291),


"A1" = the upper limit of the Very Low Flow Class for the Lower Nepean River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source, and


"B1" = the upper limit of the Very Low Flow Class for the Grose River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source.

Note : 0.44 ML/day corresponds to the estimate of basic landholder rights within the Upper Hawkesbury River (Grose River to South Creek) Management Zone that will be met through the protection of very low flows from upstream management zones.

(14) From Year 1 of this Plan, A Class for the Upper Hawkesbury River (Grose River to South Creek) Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause, the values are as specified in subclause (13).

(15) From Year 1 of this Plan, the Very Low Flow Class for the Upper Hawkesbury River (South Creek to Cattai Creek) Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause:

"X2" = , as these values are specified in subclause (13),


"Y2" = the flow at the South Creek at Richmond Road gauge (212297),


"A2" = , as these values are specified in subclause (13), and


"B2" = the upper limit of the Very Low Flow Class for the Lower South Creek Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source.

Note : 0.22 ML/day corresponds to the estimate of basic landholder rights within the Upper Hawkesbury River (South Creek to Cattai Creek) Management Zone that will be met through the protection of very low flows from upstream management zones.

(16) From Year 1 of this Plan, A Class for the Upper Hawkesbury River (South Creek to Cattai Creek) Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause, the values are as specified in subclause (15).

(17) From Year 1 of this Plan, the Very Low Flow Class for the Upper Hawkesbury River (Cattai Creek to Colo River) Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause:

"X3" = , as these values are specified in subclause (15),


"Y3" = the flow at Cattai Creek at Cattai Ridge Road gauge (2122951),


"A3" = , as these values are specified in subclause (15), and


"B3" = the upper limit of the Very Low Flow Class for the Cattai Creek Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source.

Note : 0.22 ML/day corresponds to the estimate of basic landholder rights within the Upper Hawkesbury River (Cattai Creek to Colo River) Management Zone that will be met through the protection of very low flows from upstream management zones.

(18) From Year 1 of this Plan, A Class for the Upper Hawkesbury River (Cattai Creek to Colo River) Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause, the values are as specified in subclause (17).

(19) From Year 1 of this Plan, the Very Low Flow Class for the Lower Hawkesbury River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause:

"X4" = , as these values are specified in subclause (17),


"Y4" = the flow at Colo River at Upper Colo gauge (212290),


"A4" = , as these values are specified in subclause (17), and


"B4" = the upper limit of the Very Low Flow Class for the Colo River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source.

(20) From Year 1 of this Plan, A Class for the Lower Hawkesbury River Management Zone in the Hawkesbury and Lower Nepean Rivers Water Source is when . For the purposes of this subclause, the values are as specified in subclause (19).