Modelled long term (1958-2005) average diffuse recharge (in mm) for September as calculated using the Ensym model. Includes rainfall recharge and irrigation recharge however excludes river / stream / channel / reservoir leakage. Ensym estimates daily spatial recharge by solving for physical processes using analytical solutions and empirical equations. Water entering the soil profile is initially determined by subtracting the calculated surface runoff from the total daily precipitation and irrigation. Once in the soil profile, water can be removed by evapotranspiration, lateral flow and downward movement if soil capacity is exceeded. Water fills up lower soil layers until it exits the soil profile and becomes drainage. Drainage is then partitioned into sub surface lateral flow and recharge. For further information: https://ensym.dse.vic.gov.au/home/aboutensym Beverly, C., 2007. Technical Manual - Models of the Catchment Analysis Tool. Victoria. Department of Sustainability and Environment.

Modelled long term (1958-2005) average diffuse recharge (in mm) for October as calculated using the Ensym model. Includes rainfall recharge and irrigation recharge however excludes river / stream / channel / reservoir leakage. Ensym estimates daily spatial recharge by solving for physical processes using analytical solutions and empirical equations. Water entering the soil profile is initially determined by subtracting the calculated surface runoff from the total daily precipitation and irrigation. Once in the soil profile, water can be removed by evapotranspiration, lateral flow and downward movement if soil capacity is exceeded. Water fills up lower soil layers until it exits the soil profile and becomes drainage. Drainage is then partitioned into sub surface lateral flow and recharge. For further information: https://ensym.dse.vic.gov.au/home/aboutensym Beverly, C., 2007. Technical Manual - Models of the Catchment Analysis Tool. Victoria. Department of Sustainability and Environment.

Modelled long term (1958-2005) average diffuse recharge (in mm) for February as calculated using the Ensym model. Includes rainfall recharge and irrigation recharge however excludes river / stream / channel / reservoir leakage. Ensym estimates daily spatial recharge by solving for physical processes using analytical solutions and empirical equations. Water entering the soil profile is initially determined by subtracting the calculated surface runoff from the total daily precipitation and irrigation. Once in the soil profile, water can be removed by evapotranspiration, lateral flow and downward movement if soil capacity is exceeded. Water fills up lower soil layers until it exits the soil profile and becomes drainage. Drainage is then partitioned into sub surface lateral flow and recharge. For further information: https://ensym.dse.vic.gov.au/home/aboutensym Beverly, C., 2007. Technical Manual - Models of the Catchment Analysis Tool. Victoria. Department of Sustainability and Environment.

Modelled long term (1958-2005) average diffuse recharge (in mm) for January as calculated using the Ensym model. Includes rainfall recharge and irrigation recharge however excludes river / stream / channel / reservoir leakage. Ensym estimates daily spatial recharge by solving for physical processes using analytical solutions and empirical equations. Water entering the soil profile is initially determined by subtracting the calculated surface runoff from the total daily precipitation and irrigation. Once in the soil profile, water can be removed by evapotranspiration, lateral flow and downward movement if soil capacity is exceeded. Water fills up lower soil layers until it exits the soil profile and becomes drainage. Drainage is then partitioned into sub surface lateral flow and recharge. For further information: https://ensym.dse.vic.gov.au/home/aboutensym Beverly, C., 2007. Technical Manual - Models of the Catchment Analysis Tool. Victoria. Department of Sustainability and Environment.

MODFLOW modelled potentiometric surface (m AHD) within the lower Teriary aquifer. As calculated by the ecoMarkets groundwater modelling project. North East - no lower tertiary geology Goulburn Broken - Layer 6 - Renmark Group North Central - Layer 8 - Renmark Group Mallee - Layer 4 - Renmark Group (and Layer 3 where Parilla Sand directly overlies the Renmark Group in the east) Wimmera - Layer 6 - Renmark Group (Olney Formation & Warina Sand) Glenelg Hopkins - Layer 4 - Dilwyn Aquifer, Lower Mepunga Aquifer, Timboon Sand Aquifer Corangamite - Layer 5 - Demons Bluff Formation, Eastern View Formation, Timboon Sand, Pebble Point Formation, Clifton Formation, Wiridjil Formation Port Phillip - Layer 5 - Werribee Formation, Childers Formation, Older Volcanics West Gippsland - Layer 6 - Traralgon Formation, Older Volcanics (Carrajung Formation) East Gippsland - Conceptual Layer 5 - LaTrobe Group, Traralgon Formation For further information: https://ensym.dse.vic.gov.au/home/aboutensym Harbaugh, A.W., and McDonald, M.G., 1996, User's documentation for MODFLOW-96, an update to the U.S. Geological Survey modular finite-difference ground-water flow model: U.S. Geological Survey Open-File Report 96-485, 56 p

Calibrated MODFLOW storativity per model layer. As calculated from the DSE ecoMarkets groundwater flow modelling project. Storativity (also known as confined storage) indicates the amount of groundwatyer released from storage due to a unit depressurisation of a confined aquifer. The value is dimensionless and expressed as a fraction between 0 and 1. Number of model layers per groundwater model is listed below: North East - 6 Goulburn Broken - 8 North Central - 10 Mallee 1992 - 4 Wimmera - 8 Glenelg Hopkins - 5 Corangamite - 6 Port Phillip - 6 West Gippsland - 7 East Gippsland - 6 For further information: https://ensym.dse.vic.gov.au/home/aboutensym Harbaugh, A.W., and McDonald, M.G., 1996, User's documentation for MODFLOW-96, an update to the U.S. Geological Survey modular finite-difference ground-water flow model: U.S. Geological Survey Open-File Report 96-485, 56 p

Calibrated MODFLOW horizontal hydraulic conductivity (m/day) per model layer. As calculated from the DSE ecoMarkets groundwater flow modelling project. Number of model layers per groundwater model is listed below: North East - 6 Goulburn Broken - 8 North Central - 10 Mallee 1992 - 4 Wimmera - 8 Glenelg Hopkins - 5 Corangamite - 6 Port Phillip - 6 West Gippsland - 7 East Gippsland - 6 For further information: https://ensym.dse.vic.gov.au/home/aboutensym Harbaugh, A.W., and McDonald, M.G., 1996, User's documentation for MODFLOW-96, an update to the U.S. Geological Survey modular finite-difference ground-water flow model: U.S. Geological Survey Open-File Report 96-485, 56 p

Modelled long term (1958-2005) average diffuse recharge (in mm) for June as calculated using the Ensym model. Includes rainfall recharge and irrigation recharge however excludes river / stream / channel / reservoir leakage. Ensym estimates daily spatial recharge by solving for physical processes using analytical solutions and empirical equations. Water entering the soil profile is initially determined by subtracting the calculated surface runoff from the total daily precipitation and irrigation. Once in the soil profile, water can be removed by evapotranspiration, lateral flow and downward movement if soil capacity is exceeded. Water fills up lower soil layers until it exits the soil profile and becomes drainage. Drainage is then partioned into sub surface lateral flow and recharge. For further information: https://ensym.dse.vic.gov.au/home/aboutensym Beverly, C., 2007. Technical Manual - Models of the Catchment Analysis Tool. Victoria. Department of Sustainability and Environment.

MODFLOW modelled depth to water table (m) for each month in below nominated one year wet period. As calculated by the ecoMarkets groundwater modelling project. North East 1992 Goulburn Broken 1992 North Central 1992 Mallee 1992 (only annual depths available) Wimmera 1992 Glenelg Hopkins 1992 Corangamite - Port Phillip 1992 West Gippsland 1974 East Gippsland 1992 For further information: https://ensym.dse.vic.gov.au/home/aboutensym Harbaugh, A.W., and McDonald, M.G., 1996, User's documentation for MODFLOW-96, an update to the U.S. Geological Survey modular finite-difference ground-water flow model: U.S. Geological Survey Open-File Report 96-485, 56 p

Modelled long term (1958-2005) average diffuse recharge (in mm) for August as calculated using the Ensym model. Includes rainfall recharge and irrigation recharge however excludes river / stream / channel / reservoir leakage. Ensym estimates daily spatial recharge by solving for physical processes using analytical solutions and empirical equations. Water entering the soil profile is initially determined by subtracting the calculated surface runoff from the total daily precipitation and irrigation. Once in the soil profile, water can be removed by evapotranspiration, lateral flow and downward movement if soil capacity is exceeded. Water fills up lower soil layers until it exits the soil profile and becomes drainage. Drainage is then partitioned into sub surface lateral flow and recharge. For further information: https://ensym.dse.vic.gov.au/home/aboutensym Beverly, C., 2007. Technical Manual - Models of the Catchment Analysis Tool. Victoria. Department of Sustainability and Environment.