The Northern Basin Connectivity Program is progressing connectivity improvements identified as part of the Western Regional Water Strategy. This includes analysis to inform potential changes to water sharing plan flow targets (triggers) to improve water flows across the connected catchments of the northern NSW Murray-Darling Basin at important times to achieve the following outcomes: • Protection - Protect the first flush of water after an extended dry period to protect critical human and environmental needs and support recovery post droughts • __Flows - __ Reduce the impact of cease-to-flow periods and improve low-flow connectivity • __Water Quality - __ Support water quality and reduce the risk of algal blooms forming • __Ecology - __ Support fish migration Analysis undertaken to support this work is available in the tree structure below. NB: For more information about the Departments Northern Basin Connectivity Program, please visit: https://www.dpie.nsw.gov.au/water/our-work/projects-and-programs/northern-basin-connectivity-program Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

This time series hydrologic modelling was done at the direction of the Connectivity Expert Panel. The panel used the modelling data to inform the proposed protection of base flow and resumption of flow targets presented in Connectivity Expert Panel Final Report 2024. The Connectivity Expert Panel was convened by the Minister for Water to provide advice on the adequacy and potential improvements to rules in the NSW Northern Basin water sharing plans that might materially impact on hydrological connectivity. The Panel was asked to consider the adequacy of current and proposed targets and triggers for restricting supplementary and floodplain harvesting, as well as A, B and C class licences in the Barwon-Darling. Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

The datasets provided contain modelled daily streamflow, and storage volume data for several NSW river systems. These data were generated by simulating baseline river system models used to inform the development of Regional Water Strategies. The models were simulated for three different climate scenarios: instrumental climate (about 130 years), paleo-stochastic climate (about 10,000 years), and paleo-stochastic climate with climate projection based on NARCliM 1.0 (about 10,000 years). Each modelled output is published as a ZIP file which contains two pdf files (.pdf) and three time series data (.csv). For more information on the NSW regional water strategies program, please refer to the following website. https://www.dpie.nsw.gov.au/water/our-work/plans-and-strategies/regional-water-strategies The naming structure of the individual zip files is "Watercourse at Gauge name, followed by Gauge number". 1) Bumbuggan Creek at Offtake Gauge 412017_NARCliM 2) Fairholme Gauge 412023_NARCliM 3) Goobang Creek at Condobolin Gauge 412014_NARCliM 4) Lachlan River at Belubula Gauge 412033_NARCliM 5) Lachlan River at BooberoiWeir Gauge 412021_NARCliM 6) Lachlan River at Booligal Gauge 412005_NARCliM 7) Lachlan River at Cargel Gauge 412011_NARCliM 8) Lachlan River at CondobolinWeir Gauge 412034_NARCliM 9) Lachlan River at Corrong Gauge 412045_NARCliM 10) Lachlan River at Cowra Gauge 412002_NARCliM 11) Lachlan River at DSJemalong Weir Gauge 412036_NARCliM 12) Lachlan River at Forbes Gauge 412004_NARCliM 13) Lachlan River at Hillston Weir Gauge 412039_NARCliM 14) Lachlan River at Nanami Gauge 412057_NARCliM 15) Lachlan River at Oxley Gauge 412026_NARCliM 16) Lachlan River at Reids Flat Gauge 412027_NARCliM 17) Lachlan River at USWillandraWeir Gauge 412038_NARCliM 18) Lachlan River at Whealbah Gauge 412078_NARCliM 19) Lachlan River at Wyangala Gauge 412067_NARCliM 20) Wyangala Dam-Volume Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

The datasets provided contain modelled daily streamflow, and storage volume data for several NSW river systems. These data were generated by simulating baseline river system models used to inform the development of Regional Water Strategies. The models were simulated for three different climate scenarios: instrumental climate (about 130 years), paleo-stochastic climate (about 10,000 years), and paleo-stochastic climate with climate projection based on NARCliM 1.0 (about 10,000 years). Each modelled output is published as a ZIP file which contains two pdf files (.pdf) and three time series data (.csv). For more information on the NSW regional water strategies program, please refer to the following website. https://www.dpie.nsw.gov.au/water/our-work/plans-and-strategies/regional-water-strategies The naming structure of the individual zip files is "Watercourse at Gauge name, followed by Gauge number". 1) Oxley River at Eungella Gauge 201001_NARCliM.zip 2) Rous River at Boat Harbour No1 Gauge 201002_NARCliM.zip 3) Tweed River at Braeside Gauge 201003_NARCliM.zip 4) Rous River at Boat Harbour No3 Gauge 201005_NARCliM.zip 5) Oxley River at Tyalgum Gauge 201006_NARCliM.zip 6) Hopping Dick Creek at Limpinwood Gauge 201007_NARCliM.zip 7) Rous River at Chillingham Gauge 201008_NARCliM.zip 8) Rolands Creek at Uki Gauge 201009_NARCliM.zip 9) Byrrill Creek at Glen Warning Gauge 201010_NARCliM.zip 10) Doon Doon Creek at Lower Doon Doon Gauge 201011_NARCliM.zip 11) Cobaki Creek at Cobaki Gauge 201012_NARCliM.zip 12) Doon Doon Creek downstream Clarrie Hall Dam Gauge 201013_NARCliM.zip 13) Tweed River downstream Palmers Road Crossing Gauge 201015_NARCliM.zip 14) Tweed River at Uki Gauge 201900_NARCliM.zip Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

The datasets provided contain modelled daily streamflow, and storage volume data for several NSW river systems. These data were generated by simulating baseline river system models used to inform the development of Regional Water Strategies. The models were simulated for three different climate scenarios: instrumental climate (about 130 years), paleo-stochastic climate (about 10,000 years), and paleo-stochastic climate with climate projection based on NARCliM 1.0 (about 10,000 years). Each modelled output is published as a ZIP file which contains two pdf files (.pdf) and three time series data (.csv). For more information on the NSW regional water strategies program, please refer to the following website. https://www.dpie.nsw.gov.au/water/our-work/plans-and-strategies/regional-water-strategies The naming structure of the individual zip files is "Watercourse at Gauge name, followed by Gauge number". 1) Bellinger River at Thora Gauge 205002_NARCliM.zip 2) Bellinger River at Boggy Creek Gauge 205005_NARCliM.zip 3) Woolgoolga Creek at Woolgoolga Gauge 205007_NARCliM.zip 4) Corindi Creek at Upper Corindi Gauge 205012_NARCliM.zip 5) Kalang River at Kooroowi_Scotchman No3_Gauge 205013_NARCliM.zip 6) Bellinger River at Fosters Gauge 205016_NARCliM.zip Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

The datasets provided contain modelled daily streamflow, and storage volume data for several NSW river systems. These data were generated by simulating baseline river system models used to inform the development of Regional Water Strategies. The models were simulated for three different climate scenarios: instrumental climate (about 130 years), paleo-stochastic climate (about 10,000 years), and paleo-stochastic climate with climate projection based on NARCliM 1.0 (about 10,000 years). Each modelled output is published as a ZIP file which contains two pdf files (.pdf) and three time series data (.csv). For more information on the NSW regional water strategies program, please refer to the following website. https://www.dpie.nsw.gov.au/water/our-work/plans-and-strategies/regional-water-strategies The naming structure of the individual zip files is "Watercourse at Gauge name, followed by Gauge number". 1) Towamba River at New Buildings Bridge Gauge 220001_NARCliM 2) Rutherford Creek at Brown Mountain Gauge 219001_NARCliM 3) Bemboka River at Morans Crossing Gauge 219003_NARCliM 4) Georges Creek at Steeple Flat (Cochrane Dam) Gauge 219005_NARCliM 5) Tantawangalo Creek at Tantawangalo Mountain Gauge 219006_NARCliM 6) Nunnock River at Brown Mountain (Dam Site) Gauge 219008_NARCliM 7) Brogo River at North Brogo Gauge 219013_NARCliM 8) Double Creek near Brogo Gauge 219017_NARCliM 9) Sandy Creek at Mogilla Gauge 219020_NARCliM 10) Bemboka River at Bemboka Gauge 219021_NARCliM 11) Tantawangalo Creek at Candelo Dam Site Gauge 219022_NARCliM 12) Brogo River at Angledale Gauge 219025_NARCliM 13) Bega River at Warraguburra Gauge 219026_NARCliM 14) Brogo River at Brogo Dam (Storage) Gauge 219027_NARCliM 15) Bega River at Kanoona Gauge 219032_NARCliM 16) Candelo Creek at Greenmount Road (Yurammie No. 4) Gauge 219034_NARCliM Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

The datasets provided contain modelled daily streamflow, and storage volume data for several NSW river systems. These data were generated by simulating baseline river system models used to inform the development of Regional Water Strategies. The models were simulated for three different climate scenarios: instrumental climate (about 130 years), paleo-stochastic climate (about 10,000 years), and paleo-stochastic climate with climate projection based on NARCliM 1.0 (about 10,000 years). Each modelled output is published as a ZIP file which contains two pdf files (.pdf) and three time series data (.csv). For more information on the NSW regional water strategies program, please refer to the following website. https://www.dpie.nsw.gov.au/water/our-work/plans-and-strategies/regional-water-strategies The naming structure of the individual zip files is "Watercourse at Gauge name, followed by Gauge number". 1) Nymboida River at Nymboida Gauge 204001_NARCliM.zip 2) Clarence River at Tabulam Gauge 204002_NARCliM.zip 3) Clarence River at The Gorge Gauge 204003_NARCliM.zip 4) Mann River at Jackadgery Gauge 204004_NARCliM.zip 5) Nymboida River at Buccarumbi Gauge 204005_NARCliM.zip 6) Clarence River at Lilydale_Newbold Crossing_Gauge 204007_NARCliM.zip 7) Mann River at Mitchell Gauge 204014_NARCliM.zip 8) Boyd River at Broadmeadows Gauge 204015_NARCliM.zip 9) Orara River at Karangi Gauge 204025_NARCliM.zip 10) Henry River at Newton Boyd Gauge 204034_NARCliM.zip 11) Orara River at Bawden Bridge Gauge 204041_NARCliM.zip 12) Peacock Creek at Bonalbo Gauge 204043_NARCliM.zip 13) Gorge Creek at Bonalbo Gauge 204044_NARCliM.zip 14) Coombadjha Creek at Coombadjha Gauge 204048_NARCliM.zip 15) Duck Creek at Capeen Gauge 204049_NARCliM.zip 16) Clarence River at Paddys Flat Gauge 204051_NARCliM.zip 17) Washpool Creek at Lionsville Gauge 204054_NARCliM.zip 18) Dandahra Creek at Gibraltar Range Gauge 204056_NARCliM.zip 19) Bucca Creek at Central Bucca Gauge 204060_NARCliM.zip 20) Orara River at Orange Grove Gauge 204068_NARCliM.zip 21) Nymboida River downstream Nymboida Weir Gauge 204069_NARCliM.zip 22) Clarence River at Grafton Gauge 204400_NARCliM.zip 23) Clarence Rv at Mylneford Gauge 204460_NARCliM.zip 24) Clarence River at Baryulgil Gauge 204900_NARCliM.zip 25) Orara River at Glenreagh Gauge 204906_NARCliM.zip Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

The datasets provided contain modelled daily streamflow, and storage volume data for several NSW river systems. These data were generated by simulating baseline river system models used to inform the development of Regional Water Strategies. The models were simulated for three different climate scenarios: instrumental climate (about 130 years), paleo-stochastic climate (about 10,000 years), and paleo-stochastic climate with climate projection based on NARCliM 1.0 (about 10,000 years). Each modelled output is published as a ZIP file which contains two pdf files (.pdf) and three time series data (.csv). Note: To access and download datasets for specific regions, such as the Lachlan river system, please navigate to the respective child assets beneath this parent asset. For more information on the NSW regional water strategies program, please refer to the following website. https://www.dpie.nsw.gov.au/water/our-work/plans-and-strategies/regional-water-strategies Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

Water sharing plans (WSP) are established under the Water Management Act 2000 (the Act) and are prepared for all water sources in NSW. These plans are also a component of Water Resources Plans prepared as a requirement of the Basin Plan 2012, covering water sources in the Murray–Darling Basin. WSP’s are reviewed and replaced periodically (usually every ten years) to ensure the long-term health of ecosystems and communities in specific WSP areas. The review of a WSP includes a formal evaluation to assess appropriateness, efficiency of implementation, effectiveness in meeting plan objectives, and alignment with the Act's requirements. The evaluation follows a step-by-step process which includes a model scenario to represent the effects of Planned Environmental Water (PEW) rules in the WSP. This high-level (“No PEW”) scenario enables a comparison of modelled flows at key locations within the river system between scenarios WITH and WITHOUT plan environmental rules to inform an assessment of the effectiveness of the PEW rules in the WSP. Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

Long-term average annual extraction limit (LTAAEL) is a regulatory limit set on annual water extractions from a river system. It ensures that average extractions over the long term are sustainable, and thus help prevent environmental degradation. In NSW these limits are defined by water sharing plans (WSPs). Every WSP outlines how the water in a river system will be shared over a 10-year period. They also define: • how LTAAEL compliance is to be assessed for each river system • what conditions will trigger noncompliance action • what compliance action can be taken. The Natural Resources Commission regularly reviews all WSPs to ensure extractions from each river system are within the limits set, and the Murray-Darling Basin Authority reviews sustainable diversion limit (SDL) compliance each year. To assess compliance, we model LTAAEL using a model that has been configured to represent the development and management rules defined by a system WSP (this refers to as LTAAEL model). We then compare this modelled LTAAEL with the modelled under current conditions long-term average annual extractions (LTAAEs) (which are usually those modelled by the annual permitted take, or APT, model). Although, the LTAAEL includes multiple types of water use, the compliance assessment is based on the total. We do this annually using the best available models, and the outcomes are published on the DPE website. Where river system’s LTAAE exceed LTAAEL, the system is considered noncompliant. If the noncompliance trigger conditions in the WSP are met, noncompliance action is taken. The data set provided contains flows at several gauges in each river system, as simulated by the annually extended LTAAEL model. Notwithstanding the model’s inherent limitations, these are a fair representation of those we would expect under WSP operation and development conditions. They can be compared with flows simulated by other key scenario models, such as annual permitted take (APT) model or without development (WOD) model.