Subcatchment Results Data Fields (SWMM)

All results fields are displayed on the results grid and on the Subcatchment Property Sheet while viewing a replay of a simulation.

Time varying results are shown with the field name in an alternate colour on the grid. Non time varying results have the field name in the normal black type.

Hydraulic results

Time-varying results

Field name	Help text	Units	Attribute
Rainfall	Rainfall rate	R	RAINFALL
Snow depth	Snow depth	RD	SNOW_DEPTH
Evaporation loss	Losses due to evaporation	I	EVAPORATION_LOSS
Infiltration loss	Losses due to infiltration	I	INFILTRATION_LOSS
Runoff	Runoff flow	Q	RUNOFF
Groundwater flow	Groundwater flow into the drainage network	Q	GROUNDWATER_FLOW
Groundwater elevation	Elevation of groundwater	Z	GROUNDWATER_ELEVATION
Impervious runoff	Impervious runoff depth	RD	IMPERV_RUNOFF
Pervious runoff	Pervious runoff depth	RD	PERV_RUNOFF

 

Summary results (non time-varying)

Field name	Help text	Units	Attribute
Total precipitation	Total rainfall that occurs during the simulation	RD	TOTAL_PRECIPITATION
Total runon	Total run-on from other subcatchments that occurs during the simulation	RD	TOTAL_RUNON
Total evaporation	Total evaporation that occurs during the simulation	RD	TOTAL_EVAPORATION
Total infiltration	Total infiltration that occurs during the simulation	RD	TOTAL_INFILTRATION
Total runoff depth	Total depth of runoff that occurs during the simulation	RD	TOTAL_RUNOFF_DEPTH
Total runoff volume	Total runoff that occurs during the simulation	STORAGEVOL	TOTAL_RUNOFF_VOLUME
Peak runoff	Maximum runoff value that occurs during simulation	Q	PEAK_RUNOFF
Peak runoff time	Number of minutes after the start of simulation at which peak runoff occurs	MIN	PEAK_RUNOFF_TIME
Runoff coefficient	Total runoff depth divided by the total rainfall over the subcatchment		RUNOFF_COEFFICIENT

 

Water quality results

Time varying results

Field name	Help text	Units	Attribute
<pollutant name>	Pollutant washoff / build up Note that the reported value will be in the unit specified for the pollutant	mg/l ug/l #/l	<pollutant name>

 

Maxima results

Field name	Help text	Units	Attribute
Max <pollutant name>	Maximum pollutant washoff / build up Note that the reported value will be in the unit specified for the pollutant	mg/l ug/l #/l	<pollutant name>