H - Revised Integrated Water Management Plan by Cardno (inc MUSIC file) (13.09.19)

Step 1 - Site Description                                                                                                        Step 2 -
This step characterises the site specific climate conditions                                                                     Runoff
   • Enter the project name                                                                                                      Characteristics
   • Use the drop down menu to indicate your location. Each Australian State City is available,
      otherwise, select ‘User Defined’                                                                                             • After delineating the
                                                                                                                                     upstream catchments,
   • Identify the type of evaporation data to be input: daily or monthly. If a city was selected in the                              enter each of the areas in
      previous step, then this should be left as daily.                                                                              m2 in the appropriate cells.
                                                                                                                                   • If initial losses are
                                                                                                                                     preferred to be entered,
                                                                                                                                     select “User Defined”,
                                                                                                                                     otherwise keep selected as
Step 1a - If Location = ‘User Defined’                                                                                               default. The default initial
   If a user defined location has been selected, rainfall and evaporation data must be entered.                                      losses are:
       • Click on ‘Add Climate Data’                                                                                               • Tree = 5 mm
       • Copy 1 year of daily precipitation and pan evaporation into the white blank cells (if no white cells are                  • Road = 2 mm
       visible, go back to the user interface and select ‘User Defined’ under the Location drop down.                              • Footpath = 2 mm
       • If only monthly evaporation data is available, make sure to go back to the User Interface and select                      • Other = 1 mm
       ‘Monthly’ evaporation. Enter monthly evaporation in the white blank cells.




Step 4 - Tree Characteristics                                                                       Step 3 - Soil Characteristics
  • Enter the water use category of the desired tree type. This relates                               • Select the soil type. This will most likely be a sandy
    to how much water the tree consumes, and affects the default crop                                   loam for typical tree pits. This relates to the field
    factors (which may be changed manually).                                                            capacity and wilting point of the system. These can be
  • Define whether default crop factors or user defined values will be used.                            adjusted by the user by selecting ‘Yes’ under the ‘Soil
    The default values relate to the water use category.                                                Properties’ box coloured in brown.
  • Define the Crop Factor Behaviour. This shows the relationship between                             • Enter the soil depth. Typically between 300 - 750mm.
    crop factor varying through depth. If unknown, leave as default.                                  • Enter the Type 1 soil cross-section. This is typically 1 m,
  • Define the tree type as ‘native’ or ‘exotic’.                                                       but may be zero, depending on the design
  • Adjust the canopy diameter. This affects the surface from which
    evapotranspiration can occur. A range from small to large trees is
    given as 5m - 16m. Some trees, can be as large as 30m, such as the
    Sydney Blue Gum.
  • Identify if the root growth will be constrained. For the Strataflowsystem
    this should be kept as Y.
                                                                                                    Step 5 - Watering Requirements
  • Identify the typical root diameter.                                                               • Identify if irrigation will be required. The answer will be
                                                                                                        ‘Yes’ if the results graph shows the WSUD tree moisture
  • Identify the root depth (this is likely to be equivalent to soil depth)
                                                                                                        dropping below the orange Wilting Point line. If the
                                                                                                        the desired answer is No, but the Wilting Point line is
                                                                                                        crossed, go to ‘Step 6’
                                                                                                      • If Yes above, adjust the irrigation application rate,
                                                                                                        to bring the soil moisture above the Wilting Point
Step 6 - Optimise Model                                                                                 threshold.
                                                                                                      • Adjust the canopy diameter. This affects the surface
  • Analyse the results graphs.                                                                         from which evapotranspiration can occur. A range from
  • The ideal condition is that the soil moisture is kept above the Wilting                             small to large trees is given as 5m - 16m. Some trees,
    Point to avoid tree failure.                                                                        can be as large as 30m, such as the Sydney Blue
  • If this drops below:                                                                                Gum.
    - Increase the catchment (this will affect tree spacing)                                          • Identify if the root growth will be constrained. For the
                                                                                                        Strataflowsystem this should be kept as Y.
    - Adjust the water use category to a more efficient tree
        (low or very low).                                                                            • Identify the typical root diameter.
    - Adjust the canopy diameter to reflect a smaller tree                                            • Identify the root depth (this is likely to be equivalent to
                                                                                                        soil depth)




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