# SuDS in InfoWorks ICM

In InfoWorks ICM 6.5 and later the SWMM 5 LID Controls were added to the Subcatchment Grid of ICM. Here is a copy of the ICM Help File. The LID Controls are entered in the Subcatchment Grid (1), in the SuDS or LID Tab (2), it uses SWMM 5 LID Control Types (3) and has a grid of all of the LID or SuDS data.

**Table 2. All Columns from the Help File from InfoWorks ICM SuDS Table**

Help Text |
Database Field |
Data Type |
Size |
Units |
Precision |
Default |
Error Lower Limit |
Error Upper Limit |
Warning Lower Limit |
Warning Upper Limit |

Control ID | The name that identifies this control object. | control_id | Text | 64 | ||||||

Control type | The type of SUDS control can be selected from the drop-down list. | control_type | Text | 25 | Bio-retention cell | |||||

Berm height | Storage height. | surf_berm_height | Double | Pipe size | 3 | 0 | ||||

Storage depth | Storage depth. | surf_storage_depth | Double | Pipe size | 3 | 0 | ||||

Vegetation volume fraction | Fraction of the area above the surface that is filled with vegetation. | surf_veg_vol_fraction | Double | 3 | 0 | |||||

Surface roughness (Manning’s n) | Manning’s n for overland flow. This surface roughness cannot be 0 for permeable pavements, green roofs or vegetative swales. | surf_roughness_n | Double | 3 | 0.1 | |||||

Surface slope | The gradient of the surface slope. | surf_slope | Double | Gradient | 3 | 0.01 | ||||

Swale side slope | The gradient of the slope of side walls. | surf_xslope | Double | Gradient | 3 | 0.05 | ||||

Pavement thickness | The thickness of the pavement layer. | pave_thickness | Double | Pipe size | 3 | 100 | ||||

Pavement void ratio | The void ratio of the pavement layer. | pave_void_ratio | Double | 3 | 0.15 | |||||

Impervious surface fraction | Ratio of impervious paver material to total area. | pave_impervious_surf_fraction | Double | 3 | 0 | |||||

Permeability | Permeability of the concrete or asphalt used in continuous systems or hydraulic conductivity of the fill material (gravel or sand) used in modular systems. | pave_permeability | Double | Integer | 3 | 100 | ||||

Pavement clogging factor | Number of pavement layer void volumes of runoff treated it takes to completely clog the pavement. | pave_clogging_factor | Double | 3 | 0 | |||||

Soil class | The class of soil can be selected from a drop-down list. | soil_class | Text | 20 | ||||||

Soil thickness | Thickness of layer. | soil_thickness | Double | Pipe size | 3 | 500 | ||||

Soil porosity | Porosity of the soil. This field is automatically populated when the soilClass is selected. | soil_porosity | Double | 3 | 0.5 | |||||

Field capacity | Soil field capacity. This field is automatically populated when the soilClass is selected. | soil_field_capacity | Double | 3 | 0.2 | |||||

Wilting point | Soil wilting point. This field is automatically populated when the soilClass is selected. | soil_wilting_point | Double | 3 | 0.1 | |||||

Conductivity | Soil’s saturated hydraulic conductivity. This field is automatically populated when the soilClass is selected. | soil_conductivity | Double | Integer | 3 | 12.7 | ||||

Conductivity slope | Slope of the curve of log (conductivity) versus soil moisture content. | soil_conductivity_slope | Double | 3 | 10 | |||||

Suction head | Soil capillary suction. This field is automatically populated when the soilClass is selected. | soil_suction_head | Double | Pipe size | 3 | 88.9 | ||||

Barrel height | Height of a rain barrel. | storage_barrel_height | Double | Pipe size | 3 | 0 | ||||

Storage thickness | Thickness of the storage layer. | storage_thickness | Double | Pipe size | 3 | 150 | ||||

Storage void ratio | The storage void ratio. | storage_void_ratio | Double | 3 | 0.75 | |||||

Seepage rate | The filtration rate of the layer when first constructed. | storage_seepage_rate | Double | Integer | 3 | 10 | ||||

Storage clogging factor | Number of storage layer void volumes of runoff treated it takes to completely clog the layer. | storage_clogging_factor | Double | 3 | 0 | |||||

Flow coefficient | Coefficient C that determines the rate of flow through the underdrain as a function of height of stored water above the drain bottom. | underdrain_flow_coefficient | Double | 3 | 0 | |||||

Flow exponent | Exponent n that determines the rate of flow through the underdrain as a function of height of stored water above the drain outlet. | underdrain_flow_exponent | Double | 3 | 0.5 | |||||

Offset height | Height of underdrain piping or outlet above the bottom of the storage layer or rain barrel. | underdrain_offset_height | Double | Pipe size | 3 | 150 | ||||

Delay | The number of dry weather hours that must elapse before the drain line in a rain barrel is opened. | underdrain_delay | Double | Hours | 3 | 6 | ||||

Flow capacity | The flow capacity of the storage layer or rain barrel. | underdrain_flow_capacity | Double | 4 | 6 | |||||

Mat thickness | The thickness of the drainage mat layer. | drainagemat_thickness | Double | Pipe size | 3 | 75 | ||||

Mat void fraction | The void fraction of the drainage mat. | drainagemat_void_fraction | Double | 3 | 0.5 | |||||

Mat roughness (Manning’s n) | Roughness of the drainage mat. |

**Table 3. Only the 1st Columns from the Help File InfoWorks ICM SuDS Table**

Field Name |
Help Text |

Control ID | The name that identifies this control object. |

Control type | The type of SUDS control can be selected from the drop-down list. |

Berm height | Storage height. |

Storage depth | Storage depth. |

Vegetation volume fraction | Fraction of the area above the surface that is filled with vegetation. |

Surface roughness (Manning’s n) | Manning’s n for overland flow. This surface roughness cannot be 0 for permeable pavements, green roofs or vegetative swales. |

Surface slope | The gradient of the surface slope. |

Swale side slope | The gradient of the slope of side walls. |

Pavement thickness | The thickness of the pavement layer. |

Pavement void ratio | The void ratio of the pavement layer. |

Impervious surface fraction | Ratio of impervious paver material to total area. |

Permeability | Permeability of the concrete or asphalt used in continuous systems or hydraulic conductivity of the fill material (gravel or sand) used in modular systems. |

Pavement clogging factor | Number of pavement layer void volumes of runoff treated it takes to completely clog the pavement. |

Soil class | The class of soil can be selected from a drop-down list. |

Soil thickness | Thickness of layer. |

Soil porosity | Porosity of the soil. This field is automatically populated when the soil Class is selected. |

Field capacity | Soil field capacity. This field is automatically populated when the soil Class is selected. |

Wilting point | Soil wilting point. This field is automatically populated when the soil Class is selected. |

Conductivity | Soil’s saturated hydraulic conductivity. This field is automatically populated when the soil Class is selected. |

Conductivity slope | Slope of the curve of log (conductivity) versus soil moisture content. |

Suction head | Soil capillary suction. This field is automatically populated when the soil Class is selected. |

Barrel height | Height of a rain barrel. |

Storage thickness | Thickness of the storage layer. |

Storage void ratio | The storage void ratio. |

Seepage rate | The filtration rate of the layer when first constructed. |

Storage clogging factor | Number of storage layer void volumes of runoff treated it takes to completely clog the layer. |

Flow coefficient | Coefficient C that determines the rate of flow through the underdrain as a function of height of stored water above the drain bottom. |

Flow exponent | Exponent n that determines the rate of flow through the underdrain as a function of height of stored water above the drain outlet. |

Offset height | Height of underdrain piping or outlet above the bottom of the storage layer or rain barrel. |

Delay | The number of dry weather hours that must elapse before the drain line in a rain barrel is opened. |

Flow capacity | The flow capacity of the storage layer or rain barrel. |

Mat thickness | The thickness of the drainage mat layer. |

Mat void fraction | The void fraction of the drainage mat. |

Mat roughness (Manning’s n) | Roughness of the drainage mat. |