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 December 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 July 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.

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 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.

MODFLOW modelled depth to water table (m) for each month in below nominated one year dry period. As calculated by the ecoMarkets groundwater modelling project. North East 2002 Goulburn Broken 2002 North Central 2002 Mallee 2002 (only annual depths available) Wimmera 2002 Glenelg Hopkins 1994 Corangamite - Port Phillip 2002 West Gippsland 1982 East Gippsland 2002 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.

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

Calculated using the Ensym model. The potential evapotranspiration minus actual un-saturated evapotranspiration calculation can be used to set an upper limit to groundwater evaporation rates. Ensym estimates daily spatial evapotranspiration by solving for physical processes using analytical solutions and empirical equations. Evaporation of water from the soil surface is calculated using a Ritchie's two-stage evaporation algorithim. After infiltration , drying occurs at the potential rate up to a specified limit (stage I) and thereafter at a rate reflecting diffusion processes that are assumed proportional to the square root of time (Stage II). In general transpiration is calculated as a function of pan evaporation, leaf area index, soil moisture content, plant density and temperature however the specifics of the calculations vary with landuse and the particular plant growth model utilised. 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.

Calculated using the Ensym model. The potential evapotranspiration minus actual un-saturated evapotranspiration calculation can be used to set an upper limit to groundwater evaporation rates. Ensym estimates daily spatial evapotranspiration by solving for physical processes using analytical solutions and empirical equations. Evaporation of water from the soil surface is calculated using a Ritchie's two-stage evaporation algorithim. After infiltration , drying occurs at the potential rate up to a specified limit (stage I) and thereafter at a rate reflecting diffusion processes that are assumed proportional to the square root of time (Stage II). In general transpiration is calculated as a function of pan evaporation, leaf area index, soil moisture content, plant density and temperature however the specifics of the calculations vary with landuse and the particular plant growth model utilised. 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.