Barwon-Darling Flow Class Announcement

Effective Date of Announcement: 9:00 AM, Wednesday, 1 Jul 2020 to 9:00 AM, Thursday, 2 Jul 2020 Announcement ID 54

Note: If a Flow Class Announcement is not made for a period of time that applies after this Flow Class Announcement, then this Flow Class Announcement still applies.

Note: This Flow Class Announcement is made under the Water Sharing Plan for the Barwon- Darling Unregulated Water Source.

Table 1: Flow Class determined for each Water Management Zone

Access restricted Access by a prohibited due to temporary water Flow class # Water management zone resumption of restriction access flows rule? order (section 324)? to Boomi River Low flow 1 No No (16221) class Boomi River Confluence to Upstream Low flow 2 No No Mogil Mogil Weir Pool (16222) class Low flow 3 Mogil Mogil Weir Pool (16223) No No class Downstream Mogil Mogil to Low flow 4 No No Collarenebri (16224) class Collarenebri to Upstream Walgett Low flow 5 No No Weir Pool (16225) class Low flow 6 Walgett Weir Pool (16226) No No class Downstream Walgett to Boorooma Low flow 7 No No (16227) class Low flow 8 Boorooma to Brewarrina (16228) No No class Brewarrina to Junction Low flow 9 No No (16229) class

WaterNSW ABN 21 147 934 787 169 Macquarie Street Parramatta NSW 2150 PO Box 398, Parramatta NSW 2124 T 1300 662 077 E [email protected] waternsw.com.au Culgoa River Junction to Bourke Low flow 10 No No (16230) class Low flow 11 Bourke to Louth (16231) No No class Low flow 12 Louth to Tilpa (16232) No No class Low flow 13 Tilpa to Wilcannia (16233) No No class Wilcannia to Upstream Lake Low flow 14 Wetherell Management Zone No No class (16234)

Table 2: Access for specified access licences

Access licences with cease to pump rules that are in addition to the flow class announcement rules (specified in schedule 2) Access restricted Access by a prohibited due to temporary water Can water be WMZ WAL resumption of restriction accessed? flows rule? order (section 324)? Mungindi to Boomi River 35402 No No No Confluence Collarenebri to Upstream 33722 No No No Walgett Weir Pool Collarenebri to Upstream 33622 No No Yes Walgett Weir Pool Downstream Walgett to 35432 No No No Boorooma Boorooma to Brewarrina 36273 No No No Boorooma to Brewarrina 36274 No No No Boorooma to Brewarrina 33768 No No No Boorooma to Brewarrina 33688 No No No Brewarrina to Culgoa 33692 No No No River Junction Brewarrina to Culgoa 35411 No No No River Junction Brewarrina to Culgoa 35417 No No No River Junction

WaterNSW ABN 21 147 934 787 169 Macquarie Street Parramatta NSW 2150 PO Box 398, Parramatta NSW 2124 T 1300 662 077 E [email protected] waternsw.com.au Brewarrina to Culgoa 35393 No No No River Junction Bourke to Louth 33667 No No No Bourke to Louth 33784 No No No Bourke to Louth 33670 No No No Bourke to Louth 33671 No No No

Table 3: Access for specified access licences

Unregulated river (C Class) access licences with cease to pump rules in addition to the C Class flow announcement rule (specified in schedule 2A) Access restricted Access prohibited by a due to temporary water Can water be WMZ WAL resumption of restriction accessed? flows rule? order (section 324)? Downstream Mogil Mogil 33798 No No No to Collarenebri Culgoa River Junction to 33773 No No No Bourke

Licences specified in schedule 3 table C that are exempted from access rules under clause 46 33627

Licences specified in schedule 3 table D that are exempted from access rules (Town water supplies) 33718, 35195, 35197, 35198, 35420, 35433, 36573

Table 4: Flow Advice — Indicative Flow Class Conditions

Most likely flow class for the following day (02/07/2020) Most likely flow conditions Will access be Will restricted by # WMZ resumption of Flow by a temporary flows rule Class water restriction apply? order (section 324)?

WaterNSW ABN 21 147 934 787 169 Macquarie Street Parramatta NSW 2150 PO Box 398, Parramatta NSW 2124 T 1300 662 077 E [email protected] waternsw.com.au Mungindi to Boomi River Confluence Low flow 1 No No (16221) class Boomi River Confluence to Upstream Low flow 2 No No Mogil Mogil Weir Pool (16222) class Low flow 3 Mogil Mogil Weir Pool (16223) No No class Downstream Mogil Mogil to Low flow 4 No No Collarenebri (16224) class Collarenebri to Upstream Walgett Weir Low flow 5 No No Pool (16225) class Low flow 6 Walgett Weir Pool (16226) No No class Downstream Walgett to Boorooma Low flow 7 No No (16227) class Low flow 8 Boorooma to Brewarrina (16228) No No class Brewarrina to Culgoa River Junction Low flow 9 No No (16229) class Culgoa River Junction to Bourke Low flow 10 No No (16230) class Low flow 11 Bourke to Louth (16231) No No class Low flow 12 Louth to Tilpa (16232) No No class Low flow 13 Tilpa to Wilcannia (16233) No No class Wilcannia to Upstream Lake Wetherell Low flow 14 No No Management Zone (16234) class

General flow advice and additional Information

• The Northern Basin inflow event that started Feb 2020 is coming to an end. • The Feb 2020 event included inflow from the Border, Moonie, Gwydir, Namoi, Culgoa, Bokhara, Macquarie, Bogan and Warrego systems. • All the weir pools along the Barwon Darling have been replenished from this event and around 585 GL of inflow arrived at the system. • Flows are now receding and access is below "A" class for all 14 management zones. • No significant inflow is expected without further rainfall.

WaterNSW ABN 21 147 934 787 169 Macquarie Street Parramatta NSW 2150 PO Box 398, Parramatta NSW 2124 T 1300 662 077 E [email protected] waternsw.com.au