DHI.Mike1D.RainfallRunoffModule.LID Namespace

Bio-retention Cells are depressions that comprise vegetation grown in an engineered soil mixture sited above a gravel drainage bed. They offer storage, infiltration and evaporation of both direct rainfall and runoff captured from surrounding areas. Rain gardens, street planters, and green roofs are all different types of bio-retention cells.

if disabling the storage by setting

to zero, this effectively models the Rain Garden LID type. The infiltration to outer soil is in this case the percolation, Perc.

Green Roofs offers filtering, absorbing, delaying rainfall.

They are built of a lightweight soil media, a drainage layer, a coverage planted surface which can allow minimum additional storage.

Infiltration Trenches are narrow waterways filled with gravel that capture runoff from upslope impervious areas. They offer storage capacity and additional time for captured runoff to infiltrate the inherent soil underneath.

Base class for LID classes, holding commom parameters and functionality.

Extension class for LID related methods

Class handling flow-statistics of LID

Drain mat LID layer

Pavement LID layer

Soil LID layer

Storage LID layer

Surface LID layer.

To enable surface routing, both the ManningM and the Slope must be set.

Class for writing LID results to file (dfs0)

Porous Pavement systems are excavated areas filled with gravel and paved over with a porous concrete or asphalt mix. Normally all rainfall will immediately pass through the pavement into the gravel storage layer below it where it can infiltrate at natural rates into the site´s native soil.

Rain Barrels are containers that collect roof runoff during storm events and can either release or re-use the rain water during dry periods.

Storage properties of barrel

Vegetative Swales are waterways or depressed areas with sloping sides covered with grass and other vegetation. They slow down the conveyance of collected runoff and allow it more time to infiltrate to inherent soil beneath it.

Interface for a LID containing a drain-mat layer

Interface for a LID containing flow statistics

Interface for a LID containing a pavement layer

Interface for a LID containing a soil layer

Interface for a LID containing a storage layer

Interface for a LID containing a surface layer

Drainage capacity is a rate per area [m/s] and can be scaled by different areas.

Type of flow calculations used in soil

Types of LID's supported by the standard LID implementation