Combination of the extended resumption of flow rule inclusive of additional trigger sites, end of system flow target translucency releases and connectivity environmental water allowance Bourke flow trigger. Note: See Analysis of the Connectivity Expert Panel Recommendations: Hydrologic modelling assessment.pdf (attached) for more details. 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.

Set an end of system flow target (equivalent to the bottom of baseflow) in regulated valleys (Gwydir, Namoi and Border Rivers) to protect baseflows to enable baseflow targets in the Barwon-Darling to be achieved in non-dry times. The end of system flow achieved through limitations on supplementary and floodplain harvesting access in the first instance and releasing a proportion of daily inflows to the dams(s) in each valley to meet the end of system flow target. This approach only makes releases each day if there is sufficient inflow to the storages over the preceding 24 hours and does not require reserves to be set aside. Releases not made in periods where the rolling 30-day average dam inflows fall below the 75th percentile (the dry inflow trigger). The Panel has not included a recommendation for an end of system flow rule for the regulated Macquarie-Cudgegong as the end of the system flows discharge into the Macquarie Marshes. Note: See Analysis of the Connectivity Expert Panel Recommendations: Hydrologic modelling assessment.pdf (attached) for more details. 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 Panel recommended that the Gwydir, Namoi and NSW Border Rivers regulated water sharing plans should include a ‘connectivity’ environmental water allowance (EWA) to provide pulses as needed for water quality and other environmental outcomes during dry times. Replenishment releases triggered by the dam inflows falling below the 75th percentile on average over 30 days. Up to two large replenishment releases of 20 GL made each year in each valley triggered by low inflows into storage dams. Release triggered on 31 October and 28 February each year if the inflows to the valley storage dams are less than the 75th percentile. Releases are made to achieve at least a week of flows at Bourke with peak flows above 972 ML/d for up to 10 days and at least 30 GL total event volume. A connectivity environmental water allowance was not considered for the regulated Macquarie River as it empties into the Macquarie Marshes rather than the Barwon-Darling. Note: See Analysis of the Connectivity Expert Panel Recommendations: Hydrologic modelling assessment.pdf (attached) for more details. 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.

Flow rates for imposing restrictions have been set at below baseflow for 90 consecutive days at trigger sites, flow rates for lifting restrictions have been set at the lower small fresh threshold for restriction trigger sites; flow rates must exceed the small fresh threshold for 14 days at restriction trigger sites for lifting restrictions. Supplementary and floodplain harvesting has been restricted in the regulated NSW Border Rivers, Namoi, Gwydir and Macquarie River systems when the closest downstream section in the Barwon –Darling is restricted. The 30 GL cumulative flow trigger at Bourke for lifting restrictions has been removed. Three additional trigger locations included as recommended by Panel: Mungindi, Collarenebri and Louth. Note: See Analysis of the Connectivity Expert Panel Recommendations: Hydrologic modelling assessment.pdf (attached) for more details. 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.

Modelling that was used to inform the development of the connectivity actions in the Western Regional Water Strategy. Modelling base case provides the diversions under current conditions (Water Sharing Plan rules). The base case provides daily flows and diversions for the period 1895 to 2020 for the Barwon-Darling and the following regulated tributary valleys NSW Border Rivers Gwydir Namoi Macquarie Preliminary modelling analysis (bookend analysis) done for the Western Regional Water Strategy to understand the upper limit of possible connectivity benefits from imposing water restrictions in the Barwon-Darling and upstream regulated tributary rivers. This modelling assessed the change in daily flows from restricting all supplementary access in the tributary valleys, as well as Class A, B and C access 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.

Water Models are comprehensive tools developed to simulate the behaviour of river systems under various conditions and scenarios. These models are essential for understanding and managing water resources, as they integrate a wide range of data inputs, including climate, hydrology, and human interventions. The following two categories of water models are available here: catchment models: catchment models, which focus on the natural hydrological processes within a catchment area; pre-development models: pre-development models, which simulate river systems before any water infrastructure or management practices were implemented.

Time series of modelled daily flow rates in megalitres per day across the NSW river systems – Barwon-Darling. Individual for each available river gauge data sets are attained via best available at the time of publishing hydrologic model/s and over the historic climate period (usually from early to mid-1890s to a water year previous to the date of publishing). Specific scenario data sets are expected to be updated annually and subject to quality requirements may be used in relevant studies. The naming structure of the individual files is "Gauge number_watercourse@Gauge name".

Time series of modelled daily flow rates in megalitres per day across the NSW river systems – Gwydir Valley. Individual for each available river gauge data sets are attained via best available at the time of publishing hydrologic model/s and over the historic climate period (usually from early to mid-1890s to a water year previous to the date of publishing). Specific scenario data sets are expected to be updated annually and subject to quality requirements may be used in relevant studies. The naming structure of the individual files is "Gauge number_watercourse@Gauge name".

Time series of modelled daily flow rates in megalitres per day across the NSW river systems – Murrumbidgee Valley. Individual for each available river gauge data sets are attained via best available at the time of publishing hydrologic model/s and over the historic climate period (usually from early to mid-1890s to a water year previous to the date of publishing). Specific scenario data sets are expected to be updated annually and subject to quality requirements may be used in relevant studies. The naming structure of the individual files is "Gauge number_watercourse@Gauge name".