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SWMM5 Export - Conversion Notes

This topic provides details of the export of the SWMM network objects, database items or model parameters which may be exported from a either SWMM network or a SWMM simulation to a section in an INP file. Miscellaneous export information can be found in the Other Exports section in this topic.

Note: Data stored in native units will be converted and exported according to the flow units that are selected for the network in the Network flow units field in the Model Parameters Options.Any exported comments are preceded by a pair of semi-colons (;;).

Network Objects

The following object parameters can be exported from a SWMM network. The applicable export information is contained in the relevant Conversion Notes section.

Object Category

Object Type Data Fields

Conversion Notes
Nodes Node See below
Unit hydrograph group See below
Unit hydrograph See below
Storage curve See below
Tidal curve See below
Links Conduit See below
Shape curve See below
Orifice See below
Pump See below
Pump curve See below
Weir See below
Weir curve See below
Outlet See below
Rating curve See below
Transect See below
Control curve See below
Subcatchments Subcatchment See below
Land use See below
Pollutant See below
Snow pack See below
LID control See below

Underdrain curve

See below
Aquifer See below
Soil See below
Points Rain gage See below
Polygons Polygon See below

Nodes

Node

The fields from an InfoWorks ICM SWMM Node network object are exported to the following sections in an INP file.

InfoWorks ICM Node Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Node ID Exported to each applicable section in the INP file.
Node type [STORAGE], [OUTFALL] or [JUNCTION] Determines if the data is exported to the STORAGE, OUTFALL or JUNCTION section in the INP file.
x [COORDINATES] X-coord
y Y-coord
Invert elevation [OUTFALLS] Elev
Max depth [STORAGE], [JUNCTIONS] Ymax Exported to applicable section depending on the setting of Node type.
Initial water depth [STORAGE], [JUNCTION] Y0 Exported to applicable section depending on the setting of Node type.
Surcharge depth [STORAGE], [JUNCTION] Ysur Exported to applicable section depending on the setting of Node type.
Ponded area [JUNCTION] Apond
Treatment [TREATMENT] Pollut SWMM5 Pollut parameter is exported from the Pollutant column in the ICM Treatment grid, Func is exported from the Function column, and Result is exported from the Result column.
Func
Result
Sewershed contributing area [RDII] SewerArea
Unit hydrograph [RDII] UHgroup
Baseline inflow [INFLOWS] Base
Inflow scale factor Sfactor
Inflow pattern Pat
Pollutant inflow [INFLOWS] Pat

The values in the Pollutant column in the ICM Pollutant inflow grid are exported to the Pollut parameter in an INP file, the Baseline values to Base, the Baseline pattern values to Pat, the Scaling values to Sfactor, and the Mass unit factor values to Mfactor.

Base
Pollut
Sfactor

Mfactor

(See Note below)

Base flow [DWF] Base
Base flow pattern 1 Pat1
Base flow pattern 2 Pat2
Base flow pattern 3 Pat3
Base flow pattern 4 Pat4
Type Type is automatically set to FLOW in the INP file.
Pollutant DWF [DWF] Type

The values of the first instance of a pollutant in the Pollutant column in the ICM Pollutant DWF grid are exported to the Type parameter in an INP file, Baseline column values are exported to Base, and the Base flow pattern 1 - Base flow pattern 4 column values are exported to the Pat 1 to Pat 4 parameters in an INP file.

The values in any other instances of the same Type of pollutant (ie same polluant name) are exported to the [Innovyze_Supplementary _DryWeatherFlow] section in the exported file.

Base
Pat1
Pat2
Pat3
Pat4

[Innovyze_Supplementary

DryWeatherFlow]

Type

The values the first instance of a pollutant are exported to the [DWF] section.

The values in any other instances of the same Type of pollutant (i.e. same polluant name) are exported as follows to the [Innovyze_Supplementary DryWeatherFlow] section:

The values in the Pollutant columns in the ICM Pollutant DWF grid are exported to the Type parameter in an INP file, Baseline column values are exported to Base, and the Base flow pattern 1 - Base flow pattern 4 column values are exported to the Pat 1 to Pat 4 parameters in an INP file.

Base
Pat1
Pat2
Pat3
Pat4
Additional DWF

[Innovyze_Supplementary

DryWeatherFlow]

Base

The values in the Baseline column in the ICM Additional DWF grid are exported to the Base parameter in an INP file, and the Base flow pattern 1 - Base flow pattern 4 column values are exported to the Pat 1 to Pat 4 parameters in the INP file.

Pat1
Pat2
Pat3
Pat4
Type The Type is automatically set to FLOW in the INP file.
Outfall type [OUTFALL] keyword Set according to selected outfall type and exported as FREE, NORMAL, FIXED, TIDAL or TIMESERIES.
Tide gate [OUTFALL] Gated
Fixed stage [OUTFALL] Stage
Route to subcatchment [OUTFALL] RouteTo
Tidal curve [OUTFALL] Tcurve See Tidal Curve for further information.
Storage type [STORAGE] keyword Set according to selected storage type and exported as TABULAR or FUNCTIONAL.
Storage curve Acurve
Coeff of shape function A1
Constant of shape function A0
Exponent of shape function A1
Evaporation factor Fevap
Hydraulic conductivity ksat
Initial moisture deficit IMD
Capillary suction Psi

Unit Hydrograph Group

The fields from an InfoWorks ICM SWMM Unit hydrograph group network object are exported to the following sections in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
UH group ID [RDII] UHgroup
Rain gage

[RAINGAGES]

[HYDROGRAPHS]

Name
All months unit hydrograph See Unit Hydrographs.
January unit hydrograph - December unit hydrograph
February unit hydrograph
March unit hydrograph
April unit hydrograph
May unit hydrograph
June unit hydrograph
July unit hydrograph
August unit hydrograph
September unit hydrograph
October unit hydrograph
November unit hydrograph
December unit hydrograph

Unit Hydrographs

The fields from an InfoWorks ICM SWMM Unit hydrograph network object are exported to the [HYDROGRAPHS] section in an INP file.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
UH group Name
Month Month Indicates the months (Jan, Feb etc.) the values apply to or ALL months if Month is set to ALL in ICM.
Response ratio R - short term SHORT R
Time to peak T - short term SHORT T
Recession limb ratio k - short term SHORT K
Response ratio R - medium term MEDIUM R
Time to peak T - medium term MEDIUM T
Recession limb ratio k - medium term MEDIUM K
Response ratio R - long term LONG R
Time to peak T - long term LONG
Recession limb ratio k - long term LONG
Max initial abstraction rainfall depth -short term SHORT Dmax
Initial abstraction recovery rate - short term SHORT Drec
Initial abstraction depth - short term SHORT D0
Max initial abstraction rainfall depth -medium term MEDIUM Dmax
Initial abstraction recovery rate - medium term MEDIUM Drec
Initial abstraction depth - medium term MEDIUM D0
Max initial abstraction rainfall depth -long term LONG Dmax
Initial abstraction recovery rate - long term LONG Drec
Initial abstraction depth - long term LONG D0

Storage Curve

The fields from an ICM SWMM Storage curve network object are exported to the following [CURVE] section in an INP file. A storage curve is exported as a STORAGE type of curve.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Curve ID Name
Type STORAGE
Storage array X value X values are exported from the Depth column in the Curve Editor.
Y value Y values are exported from the Surface area column in the Curve Editor.

Tidal Curve

The fields from an ICM SWMM Tidal curve network object are exported to the following [CURVE] section in an INP file. A tidal curve is exported as a TIDAL type of curve.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Curve ID Name
Type TIDAL
Tidal array X value X values are exported from the Hour of day column in the Curve Editor.
Y value Y values are exported from the Water surface elevation column in the Curve Editor.

Links

The (X) and (Y) coordinates for each interior vertex of the applicable conduit, pump, orifice, weir and outlet type of link object are exported to the[VERTICES] section of the INP file, starting from the inlet node and ending at the outlet node of each link.

The export information for other parameters are listed in the following sections.

Conduit

The fields from an ICM SWMM Conduit network object are exported to the following [CONDUITS], [XSECTIONS] and [LOSSES] sections in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Link ID [CONDUITS]

Name

Start node

Node1

End node

Node2

Length

Length

Shape [XSECTIONS] Shape

Exported as: CIRCULAR, FORCE_MAIN, FILLED_CIRCULAR, RECT_CLOSED, RECT_OPEN, TRAPEZOIDAL, TRIANGULAR, HORIZ_ELLIPSE, VERT_ELLIPSE, ARCH, PARABOLIC, POWER, RECT_TRIANGULAR, RECT_ROUND, MODBASKETHANDLE, EGG, HORSESHOE, GOTHIC, CATENARY, SEMIELLIPTICAL, BASKETHANDLE, SEMICIRCULAR, CUSTOM or IRREGULAR

Shape curve Shape curve For conduits with a Shape set to Custom. Identifies the shape curve. See the Shape Curves section for more information.
Transect Tsect For conduits with a Shape set to Irregular. Identifies the transect. See the Transect section for further information.
Vertical ellipse size code [Geom3]

For conduits with a Shape set to Vert_ellipse.

Horizontal ellipse size code For conduits with a Shape set to Horiz_ellipse.
Standard size material For conduits with a Shape set to Arch.
Concrete size code
Steel 1/2 inch size code
Steel inch size code
Plate 18 size code
Plate 31 size code
Conduit height Geom1

For conduits with a Shape set to:

Rect_closed, Rect_open, Trapezoidal, Triangular, Horiz_ellipse, Vert_ellipse, Arch,Parabolic Power, Rect_triangular, Rect_round, ModBasketHandle, Egg, Horseshoe, Gothic, Catenary, Semielliptical, Baskethandle and Semicircular.

Conduit width Geom2

For conduits with a Shape set to:

Rect_closed, Rect_open, Trapezoidal, Triangular, Horiz_ellipse, Vert_ellipse, Arch, Parabolic, Power, Rect_triangular, Rect_round, and ModBasketHandle.
Number of barrels Barrels
Roughness D-W Geom2 For conduits with Shape set to Trapezoidal ,and the Force main equation is set to D-W in the Model Parameters Options.
Roughness H-W For conduits with Shape set to Trapezoidal , and the Force main equation is set to H-W in the Model Parameter Options.
Shape exponent Geom3 For conduits with a Shape set to Power.
Triangular height For conduits with a Shape set to Rect_triangular.
Bottom radius For conduits with a Shape set to Rect_round.
Top radius For conduits with a Shape set to ModBasketHandle.
Left slope Geom4 For conduits with Shape set to Trapezoidal .
Right slope For conduits with Shape set to Trapezoidal .
Upstream elevation [CONDUITS]

Z1

Downstream elevation

Z2

US headloss coefficient [LOSSES] Kentry
DS headloss coefficient Kexit
Manning's N [CONDUITS]

N

Initial flow

Q0

Maximum flow Qmax
Sediment depth [XSECTIONS] Geom2 For conduits with Shape set to Filled_circular.
Average headloss coefficient [LOSSES] Kavg
Seepage rate Seepage
Flap valve Flap
Culvert code [XSECTIONS] Culvert

Shape Curve

The fields from an ICM SWMM Shape Curve network object are exported to the following [CURVE] section in an INP file. A shape curve is exported as a shape type of curve.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Curve ID Name
Type SHAPE
Geometry X value X values are exported from the Depth/full depth column in the Shape Curve Editor.
Y value Y values are exported from the Width/full depth column in the Shape Curve Editor.

Orifices

The fields from an ICM SWMM Orifice network object are exported to the following [XSECTIONS] and [ORIFICES] sections in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Link ID [ORIFICES] Name

Start node Node1
End node Node2
Type Type
Shape [XSECTION] Shape Exported as either CIRCULAR or RECT_CLOSED
Orifice height Geom1
Orifice width Geom2
Invert level [ORIFICES] Offset
Discharge coefficient Cd
Flap gate Flap
Time to open Orate

Pump

The fields from an ICM SWMM Pump network object are exported to a PUMP section in an INP file.

InfoWorks ICM Pump Object Data Field

SWMM5 Parameter

Notes
Link ID Name
Start node Node1
End node Node2
Pump curve ID Pcurve

Exported for non-ideal pumps. Identifies which pump curve is to be exported.

See Pump Curves section for more information.

Ideal pump Pcurve If Ideal pump is checked (true), then * is exported for Pcurve.
Initial status Status
Startup depth Startup
Shutoff depth Shutoff

Pump Curve

The fields from an ICM SWMM Pump Curve network object are exported to the following [CURVE] section in an INP file.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Curve ID Name
Pump curve type Type

The ICM Pump curve types are exported as follows:

ICM Pump Curve Type

SWMM Pump Type
PUMP 1 (Inlet volume increment) PUMP1
PUMP 2 (Inlet depth increment) PUMP2
PUMP 3 (Head difference) PUMP3
PUMP 4 (Continuous depth) PUMP4
Inlet volume increment array X value X values for PUMP1 are exported from the Inlet volume increment column in the Curve Editor.
Y value Y values for PUMP1 are exported from the Flow column in the Curve Editor.
Inlet depth increment array X value X values for PUMP2 are exported from the Inlet volume increment column in the Curve Editor.
Y value Y values for PUMP2 are exported from the Flow column in the Curve Editor.
Head difference array X value X values for PUMP3 are exported from the Head difference column in the Curve Editor.
Y value Y values for PUMP3 are exported from the Flow column in the Curve Editor.
Continuous depth array X value X values for PUMP4 are exported from the Continuous depth column in the Curve Editor.
Y value Y values for PUMP4 are exported from the Flow column in the Curve Editor.

Weir

The fields from an ICM SWMM Weir network object are exported to the following [XSECTIONS] and [WEIRS] sections in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Link ID [WEIRS] Name
Start node Node1
End node Node2
Branch ID Not exported.
Weir type [WEIRS] Type

Exported as TRANSVERSE, SIDEFLOW,V-NOTCH, TRAPEZOIDAL or ROADWAY

Transverse, Sideflow,V-notch, Trapezoidal, Roadway.
Crest height [XSECTIONS] CrestHt
Roof height Geom1
Weir width Geom2
Left slope Geom3 Exported when Weir type is set to Trapezoidal.
Right slope Geom4
Variable discharge coefficient Not exported.
Weir curve ID Identifies which weir curve is to be exported. See the Weir Curves section for further information.
Discharge coefficient [WEIRS] Cd

Exported for a Weir type set to Transverse, V-notch, Trapezoidal or Roadway.

Sideflow discharge coefficient Exported for a Weir type set to Sideflow.
Flap gate [WEIRS] Gate
Number of end contractions EC Exported for a Weir type set to Transverse or Trapezoidal.
Trapezoidal discharge coefficient Cd2 Exported for a Weir type set to Trapezoidal.
Allows surcharge Sur
Roadway width Width
Roadway surface Surface

Weir Curve

The fields from an ICM SWMM Weir Curve network object are exported to the following [CURVE] section in an INP file.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Weir curve ID Name
Weir curve type WEIR1 An ICM Weir type of weir is exported as Weir1 in the INP file.
WEIR2 An ICM Sideflow.type of weir is exported as Weir2 in the INP file.
Weir array or Sideflow array X value X values are exported from the Head difference column in the Curve Editor.
Y value Y values are exported from the Discharge coefficient column in the Curve Editor.

Outlet

The fields from an ICM SWMM Outlet network object are exported to the [OUTLETS] section in an INP file.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
Link ID Name
Start node Node1
End node Node2
Branch ID Not exported.
Outlet height Offset
Flap gate Gated
Rating curve type Keyword
Rating curve Qcurve

Exported for a Rating curve type set to Tabular/Head or Tabular/Depth.

Identifies which rating curve is to be exported. See the Rating Curves section for further information.

Coef of outlet function C1 Exported for a Rating curve type set to Functional/Head or Functional/Depth.
Exp of outlet function C2 Exported for a Rating curve type set to Functional/Head or Functional/Depth.

Rating Curve

The fields from an ICM SWMM Rating Curve network object are exported to the following [CURVE] section in an INP file. A rating curve is exported as a RATING type of curve.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Rating curve ID Name
Type RATING
Rating array X value X values are exported from the Head difference column in the Curve Editor.
Y value Y values are exported from the Outlet flow column in the Curve Editor.

Transect

The fields from an ICM SWMM Transect network object are exported to the following [TRANSECTS] section in an INP file.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
Transect ID Name
Left bank roughness Nleft
Right bank roughness Nright
Channel roughness Nchanl
Left bank offfset Xleft
Right bank offset Xright
Stations factor Wfactor
Elevation modifier Eoffset
Meander factor Lfactor
Profile Station The SWMM5 Station values are exported from the Station (X) column of the Profile grid.
Elev The SWMM5 Elev values are exported from the Elevation (Y) column of the grid.
Nsta The number of stations for which elevation data is supplied.

Control Curve

The fields from an ICMSWMM Control Curve network object are exported to the following [CURVE] section in an INP file. A control curve is exported as a CONTROL type of curve.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Curve ID Name
Type CONTROL
Control array X value X values are exported from the Variable column in the Curve Editor.
Y value Y values are exported from the Setting column in the Curve Editor.

Subcatchments

Subcatchment

The fields from an InfoWorks ICM SWMM Subcatchment network object are exported to the following sections in an INP file.

InfoWorks ICM Data Field / Grid

SWMM5 SECTION

SWMM5 Parameter

Notes

Subcatchment ID

[SUBCATCHMENTS]

Name

[SUBAREAS], [INFILTRATION], [GROUNDWATER], [GWF], [LOADINGS], [COVERAGES],[LID_USAGE] Subcat Identifies the subcatchment.

Raingage ID

[SUBCATCHMENTS]

Rgage

Outlet

OutID

Area

Area

Subcatchment width

Width

Slope

Slope

Imperviousness

%Imperv

Initial abstraction depth [Innovyze_UnitHydrograph] Depression-storage

Depression storage is calculated using the following equation:

la = k * S

where la is the Initial abstraction depth, K is the Initial abstraction factor and S = (25400 / CN) - 254, where CN is the Curve number

Initial abstraction factor
Curve number
X [Innovyze_Subcatchments_Centroids] X-Coord
Y Y-Coord
Impervious roughness [SUBAREAS] Nimp
Pervious roughness Nperv
Impervious storage depth Simp
Pervious storage depth Sperv
Percent no storage %Zero
Routing RouteTo
Percent routed %Routed
Infiltration model [INFILTRATION] /[OPTIONS]

If the Infiltration model is set to Horton, Modified Horton, Green-Ampt, Modified Green-Ampt or Curve number, the type of infiltration model is exported to the [INFILTRATION] section of the INP file.

If the Infiltration model is not set or set to Default, the type of infiltration model is exported as part of the ICM Model Parameters Options to the [OPTIONS] section in the INP file.

Soils [INFILTRATION]

The definitions of any soils listed in the grid are exported to the [INFILTRATION] section of the exported file, and their values are adjusted according to the percentage area of the subcatchment that they apply to. See the Soil section for details of the fields exported.

If the total of the percentage areas is less than 100%, then the applicable values listed in the Non-soil infiltration section of the subcatchment properties, will be applied to the remaining area.

Initial infiltration

[INFILTRATION]

MaxRate

Exported for Horton and Modified Horton infiltration.

Limiting infiltration

MinRate

Decay factor

Decay

Maximum infiltration volume

MaxInf

Average capillary suction

Suction

Exported for Green-Ampt and Modified Green-Ampt.
Saturated hydraulic conductivity

Ksat

Exported for Green-Ampt, Modified Green-Ampt and Curve Number infiltration.
Initial moisture deficit

IMD

Exported for Green-Ampt and Modified Green-Ampt.
Curve number CurveNo Exported for Curve Number infiltration.
Drying time DryTime Exported for Horton, Modified Horton and Curve Number infiltration.
Aquifer ID [GROUNDWATER] Aquifer
Aquifer node ID Node
Elevation Esurf
Groundwater coefficient A1
Groundwater exponent B1
Surface coefficient A2
Surface exponent B2
Surface groundwater coefficient A3
Surface depth Dsw
Groundwater threshold Egwt A blank field (i.e. no value set) in ICM is exported as a * in the INP file.
Aquifer elevation Ebot A blank field (i.e. no value set) in ICM is exported as a * in the INP file.
Aquifer initial ground water elevation Egw A blank field (i.e. no value set) in ICM is exported as a * in the INP file.
Aquifer initial ground water moisture content Umc A blank field (i.e. no value set) in ICM is exported as a * in the INP file.
Lateral groundwater flow equation [GWF] LATERAL Expr
Deep groundwater flow equation DEEP Expr

Snow pack ID

[SUBCATCHMENTS]

Spack

Identifies which snow pack object is to be exported. See the Snow Pack section for details.
LID controls [LID_USAGE]

The LID structure parameters are exported from the Subcatchment LIDS control grid to the [LID_USAGE] section as follows:

ICM Field SWMM5 Parameter
LIDS Structure ID NOT EXPORTED
LIDS Control ID LID
Number of units Number
Area Area
Unit surface width Width
Initial saturation InitSat
Impervious area treated FromImp
Pervious area treated FromPerv
Outflow to ToPerv
Drain to subcatchment DrainTo
Drain to node DrainTo
Land uses [COVERAGES] Landuse The SWMM5 Landuse and Percent values are exported from the Land use and Area % columns of the subcatchment's Land Uses grid.
Percent
Initial buildup [LOADINGS] Pollut The SWMM5 Pollut and InitBuildup values are exported from the Pollutant and Initial buildup columns of the subcatchment's Initial Buildup grid.
InitBuildup

Curb length

[SUBCATCHMENTS]

Clength

Pervious surface roughness pattern [ADJUSTMENTS] DSTORE
Depression storage pattern INFIL

Infiltration capacity pattern

N-PERV
[POLYGONS] X Geometry of the subcatchment boundary is exported to the X and Y coordinate data in the [POLYGONS] section
Y

Land Use

The fields from an InfoWorks ICM SWMM Land Use network object are exported to the following sections in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Land use ID [LANDUSES] Name
Washoff [WASHOFF]

Values for the SWMM5 [WASHOFF] section are exported from the ICM Washoff grid as shown below:

Washoff Column SWMM5 Parameter
Pollutant Pollutant
Washoff type FuncType
Exponential washoff coefficient C1
Rating washoff coefficient C1
EMC washoff coefficient C1
Washoff exponent C2
Cleaning efficiency SweepRmvl
BMP removal efficiency BmpRmvl
Buildup [BUILDUP]

Values for the SWMM5 [BUILDUP] section are exported from the ICM Buuildup grid as shown below:

Buildup Column SWMM5 Parameter
Pollutant Pollutant
Build up type FuncType
Max. build-up C1
Exponential rate constant C2
Power rate constant C2
Power time exponent C3
Half saturation constant C3
Unit PerUnit
Sweep interval [LANDUSES] SweepInterval
Sweep availability Availability
Last swept LastSweep

Pollutant

The fields from an InfoWorks ICM SWMM Pollutant network object are exported to the [POLLUTANTS] section in an INP file.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
Name Name
Units Units
Rainfall concentration Crain
Groundwater concentration Cgw
I&I concentration Cii
DWF concentration Cdwf
Initial concentration Cinit
Decay coefficient Kd
Snow only Sflag
Co-pollutant CoPoll
Co-fraction CoFract

Snow Pack

The fields from an InfoWorks ICM SWMM Snow Pack network object are exported to the [SNOW PACKS] section in an INP file.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
Snow pack ID Name
Plowable min. melt coefficient PLOWABLE Cmin
Plowable max. melt coefficient PLOWABLE Cmax
Plowable base temperature PLOWABLE Tbase
Plowable fraction free water capacity PLOWABLE FWF
Plowable initial snow depth PLOWABLE SD0
Plowable initial free water PLOWABLE FW0
Fraction of impervious area ploughable PLOWABLE SNN0
Impervious min. melt coefficient IMPERVIOUS Cmin
Impervious max. melt coefficient IMPERVIOUS Cmax
Impervious base temperature IMPERVIOUS Tbase
Impervious fraction free water capacity IMPERVIOUS FWF
Impervious initial snow depth IMPERVIOUS SD0
Impervious initial free water IMPERVIOUS FW0
Impervious depth at 100% cover IMPERVIOUS SD100
Pervious min. melt coefficient PERVIOUS Cmin
Pervious max. melt coefficient PERVIOUS Cmax
Pervious base temperature PERVIOUS Tbase
Pervious fraction free water capacity PERVIOUS FWF
Pervious initial snow depth PERVIOUS SD0
Pervious initial free water PERVIOUS FW0
Pervious depth at 100% cover PERVIOUS SD100
Depth at which snow removal begins REMOVAL Dplow
Fraction transferred out of the catchment REMOVAL Fout
Fraction transferred to the impervious area PLOWABLE Fimp
Fraction transferred to the pervious area PLOWABLE Fperv
Fraction converted into immediate melt PLOWABLE Fimelt
Fraction moved to another subcatchment PLOWABLE Fsub
Subcatchment ID PLOWABLE Scatch

LID Control

The fields from an ICM SWMM LID Control network object are exported to the [LID CONTROLS] section in an SWMM5 INP file.

InfoWorks ICM LID Control Data Field

SWMM5 Parameter

Notes
Control ID Name
Control type Type
Berm height SURFACE StorHt
Vegetation volume fraction SURFACE VegFrac
Surface roughness (Manning’s n) SURFACE Rough
Surface slope SURFACE Slope
Swale side slope SURFACE Xslope
Pavement thickness PAVEMENT Thick
Pavement void ratio PAVEMENT Vratio
Impervious surface fraction PAVEMENT FracImp
Permeability PAVEMENT Perm
Pavement clogging factor PAVEMENT Vclog
Soil thickness SOIL Thick
Soil porosity SOIL Por
Field capacity SOIL FC
Wilting point SOIL WP
Conductivity SOIL Ksat
Conductivity slope SOIL Kcoeff
Suction head SOIL Suct

Storage thickness

Barrel height

STORAGE Height
Storage void ratio STORAGE Vratio
Seepage rate STORAGE Seepage
Storage clogging factor STORAGE Vclog

Coefficient for flow in flow units

DRAIN Coeff When the Control type is set to Bio-retention cell, Infiltration trench, Permeable pavement or Rain barrel.
Flow capacity When Control type is set to Rooftop disconnection.
Flow exponent DRAIN Expon
Offset height DRAIN Offset
Delay DRAIN Delay
Mat thickness DRAINMAT Thick
Mat void fraction DRAINMAT VFrac
Mat roughness (Manning’s n) DRAINMAT
Underdrain open depth DRAIN CloseDepth
Underdrain close depth DRAIN OpenDepth
Underdrain control curve DRAIN ControlCurve

Identifies which underdrain control curve is to be exported.

See the Underdrain Curve for further information.

Underdrain pollutant removal REMOVALS

The values in the Pollutant column in the ICM Underdrain pollutant removal grid are exported to Pollid parameter in the INP file, and the values in the Removal % column are exported to %Removal in the INP file.

Regeneration interval PAVEMENT regenDays
Regeneration fraction PAVEMENT regenDegree

Underdrain Curve

The fields from an ICM SWMM Underdrain Curve network object are exported to the following [CURVE] section in an INP file. The underdrain curve type is exported as an UNDERDRAIN curve type.

InfoWorks ICM Storage Curve Data Field

SWMM5 Parameter

Notes
Curve ID Name
Type UNDERDRAIN
Underdrain array X value X values are exported from the Depth column in the Curve Editor.
Y value Y values are exported from the Factor column in the Curve Editor.

Aquifer

The fields from an ICM SWMM Aquifer network object are exported to the following [AQUIFER ] section in an INP file.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
Aquifer ID Name
Soil porosity Por
Soil wilting point WP
Soil field capacity FC
Conductivity Ks
Conductivity slope Kslp
Tension slope Tslp
Evapotranspiration fraction Etu
Evapotranspiration depth Ets
Seepage rate Seep
Elevation Ebot
Initial groundwater Egw
Initial moisture content Umc
Time pattern ID Epat

Soil

The fields from an ICM SWMM Soil object are exported to the following [INFILTRATION] section in an INP file if they are included in the Soils grid of a subcatchment object. The values applied to the exported fields will be adjusted according to the percentage area assigned for each soil in the grid. If this is less than 100%, the applicable values used in the Non-soils infiltration section of the subcatchment properties will be applied to the remaining area.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
Soil ID Not exported.

Initial infiltration

MaxInfilRate

Exported for Horton and Modified Horton infiltration.

Limiting infiltration

MinInfilRate

Decay factor

DecayConstant

Maximum infiltration volume

Max_Volume

Average capillary suction

SuctionHead

Exported for Green-Ampt and Modified Green-Ampt.
Saturated hydraulic conductivity

Conductivity

Exported for Green-Ampt, Modified Green-Ampt and Curve Number infiltration.
Initial moisture deficit

InitialDeficit

Exported for Green-Ampt and Modified Green-Ampt.
Curve number MaxInfilRateCurve Exported for Curve Number infiltration.
Drying time MaxInfilRateCurve Exported for Horton, Modified Horton and Curve Number infiltration.

Points

Rain Gage

The fields from an ICM SWMM Rain gage network object are exported to the following sections in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Rain gage ID [RAINGAGES] Name
X [SYMBOLS] Xcoord
Y [SYMBOLS] Ycoord
Snow catch factor [RAINGAGES] SCF
Rainfall profile [RAINGAGES] Sta

Polygons

Polygon

The fields from an ICM SWMM Polygon network object are exported to the [POLYGON] sections in an INP file.

InfoWorks ICM Data Field

SWMM5 Parameter

Notes
ID Subcat
Category Not exported.
Area Not exported.
Xcoord Geometry of the polygon boundary is exported as X and Y coordinate data.
Ycoord

Database Items

The following object parameters can be exported from database items. The applicable export information is contained in the relevant Conversion Notes section.

Database Item

Conversion Notes
SWMM Pollutograph See below

Rainfall

See below
Inflow See below
Level See below
Regulator See below
SWMM Climatology See below
SWMM Run See below
SWMM Time patterns See below

SWMM Pollutograph

The data from an InfoWorks ICM SWMM Pollutograph event item is exported to the following section in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Profiles [INFLOWS] Tseries

Mfactor

(See Note below)

The Units factor in ICM has been deprecated but retained for backwards compatibility.
patID Generated on export.

Rainfall Event

The data from an InfoWorks ICM Rainfall event item is exported to the following section in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Profiles [EVAPORATION] Tseries

If a Rainfall event is included in a SWMM Run in ICM, then the time series data is exported from the Evaporation Data page of the Rainfall Event Editor.

Otherwise the data is not exported.

patID Generated on export.

Inflow Event

The data from an InfoWorks ICM Inflow event item is exported to the following section in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Profiles [INFLOWS] Tseries

If an Inflow event is included in a SWMM Run in the network being exported, then the applicable time series data for that event is exported.

Otherwise the data is not exported.

patID Generated on export

Level Event

The data from an InfoWorks ICM Level event item is exported to the following section in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Profiles [TIMESERIES] Tseries

If a Level event is included in a SWMM Run in the network being exported, then the applicable time series data for that event is exported.

Otherwise the data is not exported.

Regulator Event

The data from an InfoWorks ICM Regulator event item is exported to the following section in an INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Field

Notes
Profiles [TIMESERIES] Tseries

If a Regulator event is included in a SWMM Run in the network being exported, then the applicable time series data for that event is exported.

Otherwise the data is not exported.

SWMM Climatology

The data from an ICM SWMM Climatology item is exported to the following section in an INP file.

InfoWorks ICM Data Field/Grid

SWMM5 SECTION

SWMM5 Parameter

Notes
Wind speed [TEMPERATURE] s1-s12 The monthly average values are exported from the Wind speed page of the SWMM Climatology object.
Evaporate only during dry periods [EVAPORATION] DRY_ONLY
Daily evaporation evap
Month / Average evaporation grid e1-e12
Source of evaporation rates Set to CONSTANT evap, CONSTANT + defined factor orDRY_ONLY
Month / Pan coefficient grid p1-p12
Soil recovery [EVAPORATION] Monthly

The monthly values are exported from the Soil recovery column on the Adjustments page of the SWMM Climatology object as a monthly pattern in the INP file.

If all monthly values = 1, data is not exported.

~ patID Generated on export to identify the monthly soil recovery values.

SWMM Run

The data from an InfoWorks ICM SWMM Run is exported to the [OPTIONS] section in a INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Rainfall/runoff [OPTIONS] IGNORE_RAINFALL Yes or No values exported from the Options Processes page.
Snowmelt IGNORE_SNOWMELT
Groundwater IGNORE_GROUNDWATER
Rainfall dependent I/I IGNORE_RDII
Flow routing IGNORE_ROUTING
Water quality IGNORE_QUALITY
Surcharge method SURCHARGE_METHOD Only exported if the Surcharge method is set to Slot on the Options Surcharge Method page.
Skip steady state flow periods SKIP_STEADY_STATE Values exported from the Timestep Control Timesteps page.
System flow tolerance SYS_FLOW_TOL
Lateral flow tolerance LAT_FLOW_TOL
Start analysis START_DATE Date and/or time values exported from the Timestep Control Dates page.
START_TIME
End analysis END_DATE
END_TIME
Start reporting REPORT_START_DATE
REPORT_START_TIME
Start sweeping SWEEP_START
End sweeping SWEEP_END
Antecedent dry days DRY_DAYS
Reporting timestep REPORT_STEP Timestep values exported from the Timestep Control Timesteps page.
Wet weather runoff timestep WET_STEP
Dry weather runoff timestep DRY_STEP
Routing timestep ROUTING_STEP
Adjust variable timesteps (check box) VARIABLE_STEP Timestep values from the Dynamic Wave section of the SWMM Run.
Adjust variable timesteps by VARIABLE_STEP
Minimum timestep MINIMUM_STEP
Conduit lengthening timestep LENGTHENING_STEP
Control rule timestep RULE_STEP

This is not exported if there is no time set on the Timestep Control Timesteps page.

SWMM Time Patterns

The data from a SWMM Time patterns database object in InfoWorks ICM is exported to the [PATTERNS] section in a INP file.

InfoWorks ICM Data Field/Grid Column

SWMM5 Parameter Notes
Time pattern Name The names are exported from the dropdown list in the SWMM Time Pattern grid.
Type Type Monthly, Daily, Hourly, Weekend
Factor Multipliers The corresponding multipliers are exported from the Factor column in the SWMM Time Pattern grid.
Month/Day/Time

Factors1...Factor12

Depending on the Types defined for the SWMM Time pattern, the applicable values are exported from the Month/Day/Time column in the SWMM Time Pattern grid.
Factors1...Factor7
Factors1...Factor24
Factors1...Factor24

Model Parameters

The following sections describe the export of data from the ICM Model parameter options in the Model menu.

Title

The data from the ICM SWMM Title dialog is exported to the [TITLE] section in the INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Title [TITLE] Exported as the first line in the [TITLE] section in the INP file.
Memo Exported as subsequent lines in the [TITLE] section in the INP file.

Options

Data from the ICM Model Parameters Options is exported to the [OPTIONS] section in the INP file.

InfoWorks ICM Data Field

SWMM5 SECTION

SWMM5 Parameter

Notes
Network flow units [OPTIONS] FLOW_UNITS

Data stored in native units will be converted and exported according to the flow units set in this paremeter.

Infiltration model INFILTRATION
~ FLOW_ROUTING Not used in ICM to the INP file.
~ LINK_OFFSETS Not used in ICM but exported as ELEVATION to the INP file.

Force main equation

FORCE_MAIN_EQUATION

Allow ponding

ALLOW_PONDING
Inertial damping INERTIAL_DAMPING
Normal flow criterion NORMAL_FLOW_LIMITED
Min nodal surface area MIN_SURFAREA
Min conduit slope MIN_SLOPE
Max trials per timestep MAX_TRIALS
Head convergence tolerance HEAD_TOLERANCE

Other Exports

SWMM Control Rules Editor

The data from the SWMM Control Rules Editor in ICM is exported to the [CONTROLS] section in the INP file.

Coordinates

X and Y coordinates of nodes are exported to the [COORDINATES] section of the INP file.

X and Y coordinates of bends in links are exported to the [VERTICES] section of the INP file.

X and Y coordinates of vertices in polygons are exported to the [POLYGONS] section of the INP file.

Note: 'Mfactor' values may be exported from a node's Pollutant inflow grid as well as from the profile properties in any SWMM Pollutograph event.The Units factor in a SWMM Pollutograph event has been deprecated but retained for backwards compatibility. If an Mfactor is exported from a SWMM Pollutograph event as well as from its replacement Mass units factor in a node's Pollutant inflow property, and if either factor is a value other than 1, then both factors will be applied to the applicable pollutant inflow values on export. A message will be included in the applicable log file informing you of the name of the node and SWMM pollutograph for which a units factor has been applied twice.
Parent topic: SWMM5 Network Export from a SWMM Network

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