The table below is taken from a Thesis by Goyen (1981) and lists typical values of ARBM parameters used in Canberra for residential lawns, playing fields, dry grass, and Eucalyptus forests.

Typical ARBM Parameters for Canberra Catchments
ParameterRef SetDry GrassResid* LawnsIrrig** Playing FieldNatural Forest
CAPIMP0.50.50.50.50.5
ISC1.01.01.01.01.0
DSC5.01.01.01.01.0
USC12.512.512.512.512.5
LSC200.012.525.025.025.0
UH10.010.010.010.010.0
LH10.010.010.010.010.0
ER0.70.70.70.70.7
GN1.01.01.01.01.0
KG0.940.940.940.940.94
S07.04.5010.010.010.0
Ko1.410.420.841.180.42
LDF0.050.050.050.050.05
IAR0.70.70.70.70.7

* .05 mm/hr domestic lawn watering was applied over the summer months

** .23 mm/hr domestic irrigation water was applied over the summer months, plus .115 mm/hr over the winter period


CAPIMP – Capacity of Impervious Area Storage

ISC – Interception Storage Capacity

DSC – Depression Storage Capacity

USC – Upper Soil Zone Storage Capacity

LSC – Lower Soil Zone Storage Capacity

UH – Maximum potential ET from the upper soil

LH – Maximum potential ET from the lower soil

ER – Proportion of ET from Upper Soil Zone

GN – Variable Rate Groundwater Recession Factor

KG – Constant Rate Groundwater Recession Factor

S0 – Sorptivity of Dry Soil in the Upper Zone

Ko – Saturated Hydraulic Conductivity

LDF – Lower Soil Drainage Factor

IAR – Rainfall Interception proportion by vegetation