HGF File Conversion - Models
Data in the [MODEL_B] and [MODEL_C] groups of the HGF file are imported into the InfoWorks ICM Runoff Surfaces table. This topic contains details on the conversion of MOUSE model information to InfoWorks ICM.
The type of runoff model is specified in the MOUSE MPR file in the [MOUSE_RUNOFF_PARAMETERS] section.
InfoWorks ICM will import Model B, Model C1 or Model C2, depending on the model specified. If none of these models are specified, or an MPR file is not selected on import, InfoWorks ICM imports Model B by default.
Model B Group - [MODEL_B]
Model B consists of five runoff surfaces. One default land use is created which contains these five runoff surfaces. If there is more than one Model B then InfoWorks ICM will create one land use per model. Each catchment is then assigned a land use depending on the runoff model assigned in MOUSE for the given catchment.
MOUSE runoff Model B is a kinematic wave (non-linear reservoir) model. MOUSE Model B data is imported into the InfoWorks ICM Runoff Surfaces table with the Routing Model set to SWMM. Both models are dependent on surface roughness, surface area, ground slope and catchment width.
|
MOUSE |
Description |
InfoWorks ICM Data Field |
|---|---|---|
|
SETNAME |
Model name |
Used as first part of Description |
|
WET_ROOF |
Wetting loss, (impervious roof areas) |
Initial Loss Value for each area type is calculated as: MOUSE Wetting Loss + MOUSE Storage Loss |
|
WET_FLAT |
Wetting loss, ( impervious flat areas) |
See WET_ROOF |
|
WET_SMALL |
Wetting loss, (pervious small infiltration areas) |
See WET_ROOF |
|
WET_MEDIUM |
Wetting loss, (pervious medium infiltration areas) |
See WET_ROOF |
|
WET_LARGE |
Wetting loss, (pervious large infiltration areas) |
See WET_ROOF |
|
STOR_FLAT |
Storage loss, (impervious flat areas) |
See WET_ROOF |
|
STOR_SMALL |
Storage loss, (pervious small infiltration areas) |
See WET_ROOF |
|
STOR_MEDIUM |
Storage loss, (pervious medium infiltration areas) |
See WET_ROOF |
|
STOR_LARGE |
Storage loss, (pervious large infiltration areas) |
See WET_ROOF |
|
ISTART_SMALL |
Maximum rate of infiltration, (pervious small infiltration areas) |
Horton Initial (Converted from ms-1/fts-1 to mmhr-1/inhr-1) |
|
ISTART_MEDIUM |
Maximum rate of infiltration (pervious medium infiltration areas) |
See ISTART_SMALL |
|
ISTART_LARGE |
Maximum rate of infiltration (pervious large infiltration areas) |
See ISTART_SMALL |
|
IEND_SMALL |
Minimum rate of infiltration (pervious small infiltration areas) |
Horton Limiting (Converted from ms-1/fts-1 to mmhr-1/inhr-1)
|
|
IEND_MEDIUM |
Minimum rate of infiltration (pervious medium infiltration areas) |
See IEND_SMALL |
|
IEND_LARGE |
Minimum rate of infiltration (pervious large infiltration areas) |
See IEND_SMALL |
|
IEXP_SMALL |
Horton exponent (pervious small infiltration areas) |
Horton Decay (Converted from s-1 to hr-1) |
|
IEXP_MEDIUM |
Horton exponent (pervious medium infiltration areas) |
See IEXP_SMALL |
|
IEXP_LARGE |
Horton exponent (pervious large infiltration areas) |
See IEXP_SMALL |
|
IHE_SMALL |
Inverse Horton exponent (pervious small infiltration areas) |
Horton Recovery (Converted from s-1 to hr-1) |
|
IHE_MEDIUM |
Inverse Horton exponent (pervious medium infiltration areas) |
See IHE_SMALL |
|
IHE_LARGE |
Inverse Horton exponent (pervious large infiltration areas) |
See IHE_SMALL |
|
MAN_ROOF |
Manning number (steep impervious areas) |
Runoff Routing Value (Converted from Manning M to Manning N=1/M) |
|
MAN_FLAT |
Manning number (impervious flat areas) |
See MAN_ROOF |
|
MAN_SMALL |
Manning number (pervious small infiltration areas) |
See MAN_ROOF |
|
MAN_MEDIUM |
Manning number (pervious medium infiltration areas) |
See MAN_ROOF |
|
MAN_LARGE |
Manning number (pervious large infiltration areas) |
See MAN_ROOF |
Model C Group - [MODEL_C]
Model C consists of one runoff surface. One default land use is created which contains this runoff surface. If there is more than one Model C then InfoWorks ICM will create one land use per model. Each catchment is then assigned a land use depending on the runoff model assigned in MOUSE for the given catchment.
There are two models defined for MOUSE runoff model C. Both models are based on the single linear reservoir model. C1 is equivalent to the surface runoff model used in the Netherlands, and C2 is equivalent to the surface runoff model used in France.
MOUSE Model C data is imported into the InfoWorks ICM Runoff Surfaces table.
- MOUSE model C1 will be imported as the InfoWorks ICM SPRINT runoff model.
- MOUSE model C2 will be imported as the InfoWorks ICM Desbordes runoff model.
The MOUSE models require inputs for the linear reservoir time constant (in model C1 this is the time constant, in model C2 this is the reduction factor and the lag time). These values are not required by InfoWorks ICM as the linear reservoir constant is calculated internally.
|
MOUSE |
Description |
InfoWorks ICM Data Field |
|---|---|---|
|
SETNAME |
Runoff model name |
Description |
|
RFACTOR |
Reduction Factor (Model C2) Default 0.90 |
Not imported; linear reservoir coefficient is calculated internally by InfoWorks ICM |
|
ILOSS |
Initial Loss Default 5e-4 m |
Initial Loss Value (Converted from in to ft when using US units) |
|
LAGTIME |
Lag Time (Model C2) |
Not imported; linear reservoir coefficient is calculated internally by InfoWorks ICM |
|
CTIME |
Time Constant (Model C1) |
See LAGTIME |
|
INFILTR |
Infiltration included/not included |
Determines Runoff surface parameters Runoff Volume Type and Surface Type:
|
|
MAX_CAP |
Maximum rate of infiltration Default 2.0 mm/h |
Horton Initial |
|
MIN_CAP |
Minimum rate of infiltration Default 0.5 mm/h |
Horton Limiting |
|
WET_COND |
Horton exponent Default 3.0 h-1 |
Horton Decay |
|
DRY_COND |
Inverse Horton exponent Default 0.10 h-1 |
Horton Recovery |
