WaterNSW - WaterNSW · drg no scale sheet all dimensions in mm u.n.o. 3rd angle projection title...

Appendices

Operations updateMacquarie valley drought response: Water outage and temporary works

WaterNSW ABN 21 147 934 787169 Macquarie Street Parramatta NSW 2150PO Box 398, Parramatta NSW 2124T 1300 662 077 E [email protected] waternsw.com.au

14 June 2019

WaterNSW is in the final stage investigations to install temporary and removable modifications at Warren Weir and at Duck Creek and Crooked Creek regulators. Investigations began in early May 2019 for short-to-medium term projects that would extend the existing, limited water supplies in the Macquarie Valley.

Installation of the temporary modifications is expected to start in mid July 2019 and would take about two weeks to complete, weather permitting. Works will be in accordance with relevant approvals and environmental guidelines.

During the installation of these works, we will need to cease flows and water deliveries for seven to ten days. The water outage is expected from mid July 2019: This will reduce water levels to allow for safe access around the weir and regulators. When works are completed, current conditions will return with minimal flows and normal drought operations will continue.

If the current drought conditions continue into spring 2019, the temporary modifications will be used to raise the weir pool restricting flows past Warren Weir. We are also planning to close the fish passage at Duck Creek and Crooked Creek regulators to further manage flows.

These temporary changes will allow us to conserve water for town water supply and high security users and effectively manage storage and minimise system losses in the supply of water to the regional towns of Nyngan and Cobar. When rain events occur, the temporary modification can be removedefficiently, allowing flows to be directed to downstream customers when possible.

Under the assumption of no significant rainfall, no inflow to the river system, and no drought relief measures in place, the river and all flows are expected to cease by the end of March 2020. These modifications will assist with extending the water supply.

Timeframes are being finalised. We will notify you again when works and water outages are scheduled.

What we suggest you do nowWater users are advised to place orders now if they are considering extracting water before the end of the 2018/19 water year. Department of Industry -Water has advised potential restrictions to water allocation from 1 July 2019, the start of the 2019-20 water year. To view your current water allocation statement and water availability outlook for 2019-20

Update on River Operations Stakeholder Consultation Committee (ROSCCo)The new ROSCCo recently met in Narromine on 16 May to discuss and continue drought contingency planning and relief measures. We are working closely with government agencies and key stakeholders to ensure the options meet the critical water needs of regional towns and that the social, environmental and economic impacts are being monitored and effectively managed. For more information and to see the presentation, visit our webpage

Authorised by

Sri Sritharan,

Water System Operations Manager - Central

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(a) Any environmental impact on a community?

(b) Any transformation of a locality?

(c) Any environmental impact on the ecosystem of the locality?

(d) Any reduction of the aesthetic, recreational, scientific or otherenvironmental quality or value of a locality?

(e) Any effect on a locality, place or building having aesthetic,anthropological, archaeological, architectural, cultural, historical, scientificor social significance or other special value for present or futuregenerations?

(f) Any impact on the habitat of protected fauna (within the meaning of theNational Parks and Wildlife Act 1974)?

(g) Any endangering of any species of animal, plant or other form of life,whether living on land, in water or in the air?

(h) Any long-term effects on the environment?

(i) Any degradation of the quality of the environment?

(j) Any risk to the safety of the environment?

(k) Any reduction in the range of beneficial uses of the environment?

(l) Any pollution of the environment?

(m) Any environmental problems associated with the disposal of waste?

(n) Any increased demands on resources (natural or otherwise) that are,or are likely to become, in short supply?

(o) Any cumulative environmental effect with other existing or likely futureactivities?

Operations update

Water Delivery Arrangements Macquarie River

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

1 July 2019

Update The severe and ongoing drought conditions across NSW are having a significant impact on the

ability of WaterNSW to deliver water to customers.

Over the last two years, rainfall across northern NSW has been well below average and in many

areas are now the lowest ever recorded. This, combined with higher than average temperatures,

has resulted in record low inflows to the storages. Inflows to Burrendong Dam are 36% of the

previous low record.

While allocations for the Macquarie River system have been announced by the NSW Department

of Planning, Industry and Environment, the delivery of water is restricted due to the ongoing

drought.

The Macquarie River system is currently being operated under drought contingency measures with

water delivery restrictions.

The water delivery restrictions and operational arrangements are outlined in the tables below and

are specifically outlined for each river section to best assist landholders and customers with

information relevant to their specific circumstances

Access to water this year will be highly dependent on further inflows into the catchment and

associated tributary inflows downstream from WaterNSW storages.

We encourage our customers and community to stay up to date with the latest information via the

options below.

Stay informed 1. Early Warning Network (EWN)

Customers will be notified of access arrangements through our EWN. If you have not

already signed up to the system, please phone us on 1300 662 077 or email us at

[email protected]


2. eNewsletters

Customers can stay up to date through weekly email communications sent by WaterNSW.

Visit waternsw.com.au/subscribe to choose which reports you would like to receive.

3. Website

Drought information is available on our website and updated weekly. Visit

waternsw.com.au/supply/drought-information

AWDs for Macquarie River 1 July 2019

Licence Category AWD Deliverability Domestic and Stock 80% Restricted – please see details below

Domestic and Stock (Domestic) 80% Restricted – please see details below

Domestic and Stock (Stock) 80% Restricted – please see details below

Local Water Utility 80%

Regulated River (General Security) 0% Restricted – please see details below

Regulated River (General Security) Carryover allocations

n/a Restricted – please see details below

Regulated River (High Security) 70% Restricted – please see details below

Regulated River (High Security) (Research) 35% Restricted – please see details below

Regulated River (High Security) (Town Water Supply)

35% Restricted – please see details below

Supplementary Water 100% Subject to availability

Deliverability of ordered water

River section Licence category Type of restriction Period of applicability

Method of placing water order

Burrendong Dam to Warren Weir

All licence categories

Unrestricted delivery of account water. Water orders to be placed as normal.

Until further notice

iWAS and customer help desk.

Burrendong Dam to Warren Town Weir (ESID: 2159)

Local Water Utility Unrestricted delivery of account water. Water orders to be placed as normal.



Warren Weir to Marebone Weir


Delivery of account water only with tributary flows and not with dam releases.


Only via customer help desk.


Water order is required to be placed and need to be approved by WaterNSW.

Confirmation of water order from WaterNSW is required.

Downstream of Marebone Weir







Downstream of Marebone Break and Bulgeragar Creek







Gunningbar Creek offtake to Gunningbar Weir





Gunningbar Weir to Bogan River confluence





Downstream of Duck Creek offtake







Downstream of Crooked Creek offtake







Trade restrictions

River section Licence category Type of restriction Period of applicability Macquarie River General Security Trading from general security licences

in the Macquarie River to any licences in Macquarie or Cudgegong rivers is suspended


Macquarie River High security and Supplementary licences

Trading is unaffected Until further notice


Cudgegong River to Macquarie River


Trading of allocations is suspended Until further notice

Macquarie River to Cudgegong River

High security and Supplementary licences

Trading is unaffected Until further notice

Authorised by

Sri Sritharan Water System Operations Manager Central

More information Please visit our website for more information at waternsw.com.au/supply/regional-nsw/customer-

notices. For more information on this event, phone us on 1300 662 077 or email us at

[email protected].

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Maccullochella peelii peeliiAn ‘important population’ of a vulnerable species is defined by DotE (2013) as ‘…a population that is necessary for the species’ long-term survival and recovery. This may include populations identified as such in recovery plans, and/or that are:

According to the DotE (2013) ‘significant impact criteria’ for a vulnerable species, an action is likely to have a significant impact on an vulnerable species if there is a real chance or possibility that it will:

Lead to a long-term decrease in the size of an important population

Reduce the area of occupancy of the species

Fragment an existing important population into two or more populations

Adversely affect habitat critical to the survival of a species

Disrupt the breeding cycle of an important population

Modify, destroy, remove, isolate or decrease the availability or quality of habitat to the extent that the species is likely to decline

Result in invasive species that are harmful to a vulnerable species becoming established in the vulnerable species’ habitat

Cyprinus carpio Gambusia affinis (

Introduce disease that may cause the species to decline

Interfere with the recovery of the species

Conclusion

Bidyanus bidyanus

According to the DotE (2013) ‘significant impact criteria’ for endangered species, an action is likely to have a significant impact on a critically endangered species if there is a real chance or possibility that it will:

Lead to a long-term decrease in the size of a population


Fragment an existing population into two or more populations


Disrupt the breeding cycle of a population






Conclusion

Maccullochella macquariensis

According to the DotE (2013) ‘significant impact criteria’ for endangered species, an action is likely to have a significant impact on an endangered species if there is a real chance or possibility that it will:

Maccullochella macquariensisLead to a long-term decrease in the size of a population



Fragment an existing population into two or more populations


Disrupt the breeding cycle of a population







Conclusion

Maccullochella macquariensisMaccullochella macquariensis

a) in the case of a threatened species, whether the action proposed is likely to have an adverse effecton the life cycle of the species such that a viable local population of the species is likely to be placed atrisk of extinction


b) in the case of an endangered population, whether the action proposed is likely to have an adverseeffect on the life cycle of the species that constitutes the endangered population such that a viable localpopulation of the species is likely to be placed at risk of extinction

(c) in the case of an endangered ecological community or critically endangered ecological community,whether the action proposed:i) is likely to have an adverse effect on the extent of the ecological community such that its localoccurrence is likely to be placed

(ii) is likely to substantially and adversely modify the composition of the ecological community such thatits local occurrence is likely to be placed at risk of extinction

d) in relation to the habitat of a threatened species, population or ecological community:(i) the extent to which habitat is likely to be removed or modified as a result of the action proposed, and

ii) whether an area of habitat is likely to become fragmented or isolated from other areas of habitat as aresult of the proposed action, and


(iii) the importance of the habitat to be removed, modified, fragmented or isolated to the long-termsurvival of the species, population or ecological community in the locality

(e) whether the action proposed is likely to have an adverse effect on critical habitat (either directly orindirectly)

(f) whether the action proposed is consistent with the objectives or actions of a recovery plan or threatabatement plan

g) whether the action proposed constitutes or is part of a key threatening process or is likely to result inthe operation of, or increase the impact of, a key threatening process

Conclusion

Bidyanus bidyanusBidyanus bidyanus


Bidyanus bidyanus


(c) in the case of an endangered ecological community or critically endangered ecological community,whether the action proposed:i) is likely to have an adverse effect on the extent of the ecological community such that its localoccurrence is likely to be placed





Bidyanus bidyanus




Conclusion

Bidyanus bidyanus

Tandanus tandanusTandanus tandanus



Tandanus tandanus

Tandanus tandanus(c) in the case of an endangered ecological community or critically endangered ecological community,whether the action proposed:i) is likely to have an adverse effect on the extent of the ecological community such that its localoccurrence is likely to be placed







Tandanus tandanusg) whether the action proposed constitutes or is part of a key threatening process or is likely to result inthe operation of, or increase the impact of, a key threatening process

Conclusion

Tandanus tandanus



(c) in the case of an endangered ecological community or critically endangered ecological community,whether the action proposed:i) is likely to have an adverse effect on the extent of the ecological community such that its localoccurrence is likely to be placed at risk of extinction

Conclusion

RESULTS OF THE AHIMS SEARCH HAVE BEEN REMOVED AS A CONDITION OF AHIMS DATABASE USE

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