SWMM5 Conversion for links in InfoWorks ICM

To import network data from SWMM5 text files:

1. Open the network to be updated

2. Select Import | Model | from SWMM5 text file... from the Network menu. This displays the ICM SWMM5 Import Dialog.

3. Enter the path to the text file to be imported in the Network (INP) box, or use the browse button to select a file from a Windows File Open dialog.

4. Optionally select a .INI file to be imported.

5. SWMM5 uses the Manning equation to represent roughness. In InfoWorks ICM, Manning values can be represented as either M = 1 / n or n. Use the Select Network Roughness Type radio buttons to select your preference.

6. Set the network system type to an appropriate value using the System Type combo box.

7. Click OK to continue the import. The OK button is only enabled if you enter the name of an existing text file.

An import log will be displayed with any conversion errors or warnings.

Information from the following sections of the SWMM5 project file are imported to InfoWorks ICM Link objects:

[CONDUITS]

[PUMPS]

[ORIFICES]

[WEIRS]

[OUTLETS]

[XSECTIONS]

[TRANSECTS]

[LOSSES]

[VERTICES]

[CONDUITS] Section

SWMM5 Conduits are imported as InfoWorks ICM Conduits or Channels with the following properties:

US Headloss Type of Fixed

DS Headloss Type of Fixed (or Flap if a flap gate is present)

X and Y coordinates of bends as specified in the [VERTICES] section

US Headloss Coefficient and DS Headloss Coefficient determined from the [LOSSES] section

Link Type, Shape and geometry determined from the [XSECTIONS] section

The SWMM5 Conduit data is imported as described in the table below:

SWMM5	Description	InfoWorks ICM Data Field
Name	Conduit ID	Asset ID
Node1	Upstream Node ID	US Node ID
Node2	Downstream Node ID	DS Node ID
Length	Conduit Length	Length
N		Bottom Roughness Manning Top Roughness Manning If the roughness type selected on the Import Network from SWMM5 Data Dialog was Manning, roughness is imported as 1.0/N, otherwise roughness is imported as N.
Z1	Offset of upstream end of conduit invert above the invert elevation of its upstream node	US Invert Level = Z1 + Z Where Z is connecting node invert elevation. If LINK_OFFSETS in the [OPTIONS] section is defined as ELEVATION: US Invert Level = Z1
Z2	Offset of downstream end of conduit invert above the invert elevation of its downstream node	DS Invert Level = Z2 + Z Where Z is connecting node invert elevation. If LINK_OFFSETS in the [OPTIONS] section is defined as ELEVATION: DS Invert Level = Z2
Q0	Flow in conduit at start of simulation	User Number 1 (No InfoWorks ICM equivalent)

Conduit Cross Section Data - [XSECTIONS] Section

Conduit geometry is determined from data in the SWMM5 [XSECTIONS] Section:

SWMM5	Description	InfoWorks ICM Data Field
Link	Link ID	Determines to which conduit or channel the xsections data applies
Shape	Cross Section Shape	Shape ID The table below lists the SWMM5 shapes that are imported as standard InfoWorks ICM shapes: SWMM5 Shape InfoWorks ICM Shape ID Conversion Notes CIRCULAR CIRC FORCE_MAIN CIRC Solution Model field is set toForceMain Roughness Type is set to HW Bottom roughness and Top roughness are set from Geom2. If FORCE_MAIN_EQUATION in the [OPTIONS] section is set to D-W, roughness values will be converted from D-W to Manning. FILLED_CIRCULAR CIRC Sediment Depth is set to value in Geom2 RECT_CLOSED RECT RECT_OPEN OREC The table below lists the SWMM5 shapes that are imported as user defined shapes. Shapes unique to a specific conduit will have the conduit ID appended to the shape ID (denoted by an asterisk in the table). SWMM5 Shape InfoWorks ICM Shape ID TRAPEZOIDAL *SWMM_TRAPEZOIDAL TRIANGULAR *SWMM_TRIANGLE HORIZ_ELLIPSE SWMM_HORIZ_ELLIPSE VERT_ELLIPSE SWMM_VERT_ELLIPSE ARCH SWMM_SHAPE_ARCH PARABOLIC *SWMM_PARABOLIC POWER *SWMM_POWER RECT_TRIANGULAR *SWMM_RECT_TRIANGLE RECT_ROUND *SWMM_RECT_ROUND MODBASKETHANDLE *SWMM_MOD_BASKET_HANDLE EGG SWMM EGG HORSESHOE HORSESHOE GOTHIC SWMM_GOTHIC CATENARY SWMM_CATENARY SEMIELLIPTICAL SWMM_SEMIELLIPTICAL BASKETHANDLE BASKETHANDLE SEMICIRCULAR SWMM_SEMICIRCULAR
Geom1	Geometry data 1	Height
Geom2	Geometry data 2	Width Bottom Roughness and Top Roughness for FORCE_MAIN shapes Sediment Depth for FILLED_CIRCULAR shapes
Geom3	Geometry data 3	Used to determine user defined shapes for TRAPEZOIDAL, POWER, RECT_TRIANGULAR and RECT_ROUND shapes
Geom4	Geometry data 4	Used to determine user defined shapes for TRAPEZOIDAL shapes
Barrels	Number of parallel pipes of equal size, slope, and roughness associated with a conduit	Number of links equal to the number of barrels specified are created
Curve	Name of Curve in the [CURVES] section that defines how width varies with depth	The curve identified is added as a user defined InfoWorks ICM Shape.
Tsect	Name of an entry in the [TRANSECTS] section that describes the cross-section geometry of an irregular channel	If a SWMM5 conduit has an entry in the [TRANSECTS] section, the conduit will be imported as an InfoWorks ICM Channel object with associated Channel Shape. The information from the [TRANSECTS] section is imported into the Channel Profile grid of the Channel Shape as follows: SWMM5 Description Conversion Notes Nleft Manning’s n of left overbank portion of channel Rough. (up to left panel marker) Nright Manning’s n of right overbank portion of channel Rough. (from right panel marker) Nchanl Manning’s n of main channel portion of channel Rough. (between left and right panel markers) Name Transect ID Used to identify to which channel the data applies Nsta Number of stations across cross-section Number of entries in Channel Profile grid Xleft Station position which ends the left overbank portion of the channel Position of left bank panel marker Xright Station position which begins the right overbank portion of the channel Position of right bank panel marker Wfactor Factor by which distances between stations should be multiplied Multiplies X Co-ordinates by Wfactor value Eoffset Amount added to the elevation of each station Not used Elev Elevation of the channel bottom at a cross-section station relative to some fixed reference Depth Station Distance of a cross-section station from some fixed reference X Coord

[LOSSES] Section

Conduit upstream and downstream headloss cofficients are determined from data in the SWMM5 [LOSSES] Section:

SWMM5	Description	InfoWorks ICM Data Field
Conduit	Conduit ID	Used to identify to which conduit the data applies
Kentry	Entrance minor head loss coefficient	Upstream Headloss coefficient
Kexit	Exit minor head loss coefficient	Downstream Headloss coefficient
Kavg	Average minor head loss coefficient across length of conduit	Upstream Headloss coefficient if Kentry is not set Downstream Headloss coefficient if Kexit is not set and Flap is set to NO.
Flap	Indicates whether a flap valve is present to prevent reverse flow	If Flap is set to YES: Downstream Headloss Coefficient is set to 1.0 Downstream Headloss Type is set to Flap
SeepRate	Uniform seepage rate along the bottom and sloped sides of conduit	Infiltration loss from base coefficient

[PUMPS] Section

SWMM5 Pumps are imported as an InfoWorks ICM Pump of link type determined by data in the [CURVES] section.

The SWMM5 Pump data is imported as described in the table below:

SWMM5	Description	InfoWorks ICM Data Field
Name	Pump ID	Asset ID
Node1	Name of node on inlet side of pump	US Node ID
Node2	Name of node on outlet side of pump	DS Node ID
PCurve	Name of pump curve	Used to determine type of pump and Head Discharge curve details from the [CURVES] section. If there is no curve data, the pump is an 'Ideal' pump, for which there is no InfoWorks ICM equivalent. An invalid fixed discharge pump will be created.
Status	Status at start of simulation	User Text 1 (No InfoWorks ICM equivalent)
Startup	Depth at inlet node when pump turns on	Switch on level = Startup + Z Where Z is Chamber Floor Level of upstream node.
Shutoff	Depth at inlet node when pump shuts off	Switch off level = Shutoff + Z Where Z is Chamber Floor Level of upstream node.

Pump Curve Details - [CURVES] section

SWMM5	Description	Conversion Notes
Name	Pump ID	Used to identify to which pump curve data applies.
Type	SWMM5 Type Description Type 1 An off-line pump with a wet well where flow increases incrementally with available wet well volume Type 2 An in-line pump where flow increases incrementally with inlet node depth Type 3 An in-line pump where flow varies continuously with head difference between the inlet and outlet nodes Type 4 A variable speed in-line pump where flow varies continuously with inlet node depth	Link Type SWMM5 Type InfoWorks ICM Link Type Type 1 Fixpmp Type 2 Fixpmp Type 3 Rotpmp Type 4 Scrpmp
x-value	Pump outflow	Head Discharge Table See Pump Conversion section below.
y-value	SWMM5 Type x-value y-value Type 1 pump outflow increment of inlet node volume Type 2 pump outflow Increment of inlet node depth Type 3 pump outflow Head difference between outlet and inlet nodes Type 4 pump outflow Continuous depth	Head Discharge Table See Pump Conversion section below.

Pump Conversion

If Pump Type = 1 the importer uses the inlet node geometry to convert volumes to levels.

For Pump Type = 1 and 2 the importer creates a fixed pump for each distinct discharge value. The number of fixed discharge pumps is equal to the number of entries in the Curves section.

Pump Type 3 is imported as a rotodynamic pump. The importer creates a Head Discharge Table from the SWMM5 Curve x, y values. The order of data entries in the SWMM5 curve is reversed, as InfoWorks ICM expects descending heads. If there is no Q=0 value specified in the SWMM5 curve, InfoWorks ICM calculates a head value at Q=0 by extrapolation.

Pump Type 4 is imported as an InfoWorks ICM Archimedean screw pump. The importer creates a Head Discharge Table from the SWMM5 Curve x, y values. If there is no Q=0 value specified in the SWMM5 curve, InfoWorks ICM calculates a head value at Q=0 by extrapolation.

[ORIFICES] Section

SWMM5 Orifices are imported as an InfoWorks ICM Orifice or InfoWorks ICM Sluice depending on the shape of the SWMM5 Orifice as defined in the [XSECTIONS] section.

The SWMM5 Orifice data is imported as described in the table below:

SWMM5	Description	InfoWorks ICM Data Field
Name	Orifice ID	Asset ID
Node1	Name of node on inlet end of orifice	US Node ID
Node2	Name of node on outlet end of orifice	DS Node ID
Type	Orientation of orifice: either SIDE or BOTTOM	User Text 1 (No InfoWorks ICM equivalent)
Offset	Amount that a orifice is offset above the invert of inlet node	Invert Level = Offset + Z Where Z is upstream node invert elevation. If LINK_OFFSETS in the [OPTIONS] section is defined as ELEVATION: Invert Level = Offset
Cd	Discharge Coefficient	Discharge Coefficient calculated as: Cd√2
Flap	Indicates whether a flap valve is present to prevent reverse flow	SWMM5 orifice is imported as an InfoWorks ICM Orifice or Sluice according to shape defined in [XSECTIONS] section (see below). If Flap is set to YES, SWMM5 orifice is imported with a Flap Valve downstream of the Orifice or Sluice. The invert level of the Flap Valve will be the invert level of the Orifice/Sluice. The diameter of the Flap Valve will be the diameter of the Orifice or the width of the Sluice.
Orate	Time to open a fully closed orifice	User Number 1 (No InfoWorks ICM equivalent)

Orifice Cross Section Data - [XSECTIONS]

Orifice geometry is determined from data in the SWMM5 [XSECTIONS] Section:

SWMM5	Description	InfoWorks ICM Data Field
Link	Orifice ID	Used to determine to which orifice object cross section data applies.
Shape	CIRCULAR or RECT_CLOSED	Imported as follows: SWMM5 Shape InfoWorks ICM Object CIRCULAR Orifice RECT_CLOSED Sluice
Geom1	Diameter of a circular orifice Full Height of a rectangular orifice	Imported as follows: SWMM5 Shape InfoWorks ICM Object InfoWorks ICMData Field CIRCULAR Orifice Diameter RECT_CLOSED Sluice Opening Height
Geom2	Top Width of a rectangular orifice	Sluice width

[WEIRS] Section

SWMM5 Weir objects are imported as an InfoWorks ICM Weir with width as defined in the [XSECTIONS] section.

The SWMM5 Weir data is imported as described in the table below:

SWMM5	Description	InfoWorks ICM Data Field
Name	Weir ID	Asset ID
Node1	Name of node on inlet side of weir	US Node ID
Node2	Name of node on outlet side of weir	DS Node ID
Type	Transverse, Sideflow, V-notch or Trapezoidal	Link Type SWMM5 Type InfoWorks ICMLink Type Transverse Weir Diameter Sideflow Weir Opening Height V-notch VNWeir Trapezoidal TRWeir
Offset	Amount that the weir crest is offset above the invert of inlet node	Crest Level = Offset + Z For side weirs: Crest Level = (offset5/3)2/3+Z Where Z is upstream node invert elevation. If LINK_OFFSETS in the [OPTIONS] section is defined as ELEVATION: Crest Level = Offset For side weirs: Crest Level = (offset5/3)2/3
Cd	Weir Discharge Coefficient	Discharge Coefficient calculated as: SWMM5 Type InfoWorks ICMDischarge Coefficient Transverse Cd/√g Diameter Sideflow Cd/√g Opening Height V-notch (15/8 Cd)/√(2g) Trapezoidal Stored in User Number 1 field. (No InfoWorks ICMequivalent)
Flap	Indicates whether a flap valve is present to prevent reverse flow	SWMM5 Weir is imported as an InfoWorks ICM Weir. If Flap is set to YES, SWMM5 weir is imported with a Flap Valve downstream of the InfoWorks Weir. The invert level of the Flap Valve will be the crest of the Weir. The diameter of the Flap Valve will be the width of the Weir.
EC	Number of end contractions for TRANSVERSE or TRAPEZOIDAL weir	Number of Notches
Cd2	Discharge coefficient for triangular ends of a TRAPEZOIDAL weir	User Number 1 (No InfoWorks ICM equivalent)

Weir Cross Section Data - [XSECTIONS]

Weir geometry is determined from data in the SWMM5 [XSECTIONS] Section:

SWMM5	Description	InfoWorks ICM Data Field
Link	Weir ID	Used to determine to which weir object cross section data applies.
Shape	SWMM5 Weir Type SWMM5 Shape Transverse RECT_OPEN Sideflow RECT_OPEN V-notch TRIANGULAR Trapezoidal TRAPEZOIDAL
Geom1	Full Height	Notch height for InfoWorks ICM VNWeir or TRWeir. Otherwise, not imported - not equivalent to InfoWorks ICM Height.
Geom2	Top Width	Width

[OUTLETS] Section

SWMM5 Outlet objects are imported as an InfoWorks ICM User Control object of type Compnd.

The SWMM5 Outlet data is imported as described in the table below:

SWMM5	Description	InfoWorks ICM Data Field
Name	Outlet ID	Asset ID
Node1	Name of node on inlet end of link	US Node ID
Node2	Name of node on outlet end of link	DS Node ID
Offset	Amount that the outlet is offset above invert of inlet node	Initial Level = Offset + Z Where Z is upstream node invert elevation. If LINK_OFFSETS in the [OPTIONS] section is defined as ELEVATION: Initial Level = Offset
Qcurve	Name of rating curve that describes outflow rate as a function of head across the outlet for a TABULAR outlet. Rating curve is defined in the [CURVES] section.	A Head Discharge Table is created with a name based on the SWMM5 Name. Values to be imported into the head array and discharge array in the Head Discharge Table are determined from curve data in the SWMM5 [CURVES] section. SWMM5 Curve Field InfoWorks ICM Head Discharge Table Name Used to determine which curve is to be applied to the User Control. Type Outlet Flow Discharge Head Head
C1	Coefficient of power function that relates outflow (Q) to head across the link (H) for a FUNCTIONAL outlet Q=C1(H)C2	A 15 point Head Discharge Table is created with a name based on the SWMM5 Name. Table entries are calculated using the functional relationship: Q=C1(H)C2
C2	Exponent of power function that relates outflow (Q) to head across the link (H) for a FUNCTIONAL outlet Q=C1(H)C2
Flap	Indicates whether a flap valve is present to prevent reverse flow	If Flap is set to YES, for Head values < 0 in the Head Discharge Table, Discharge will be set to zero.