What's New in MicroDrainage 2019.1

Taking the UK and Ireland's leading drainage design software package to a whole new level of detail

MicroDrainage 2019.1 introduces significant new functionality that helps take the UK & Ireland’s leading drainage design software package to a whole new level of detail. Here are some of the headline features you can discover in the latest release of MicroDrainage.

Photo of sustainable drainage feature in urban area


  • Manhole Offsets

    MicroDrainage 2019.1 introduces new functionality to allow the recording and validation of a manhole offset within MicroDrainage. Standard manhole details, such as those in Sewers for Adoption 7th edition, stipulate that benching for the pipe channel must be arranged to provide a safe landing width for access into the chamber. This information can now be recorded in MicroDrainage meaning there's no need for rework in CAD packages or annotations to our previous outputs.

    This new function can allow the appropriate calculation of offsets for networks as per the Sewers for Adoption guidance. User defined offsets can also be specified, and the Design Audit wizard is able to validate any user defined offsets and make immediate recommendations in locations where the user defined offset may be incorrect. This also provides greater accuracy to our costing and classification tools.

    MicroDrainage screenshot of design audit results

    MicroDrainage screenshot of manhole coordinates
  • Autodesk Civil3D® Parts Mapping

    Further to our introduction of the intelligent data exchange with Autodesk Civil3D® in 2018, MicroDrainage has continued to build the ‘round trip’ functionality to provide a truly integrated design approach between the two packages.

    In 2019.1, users of the DrawNet(CAD) module can now create MicroDrainage models from any Civil3D network using the Parts Mapping Manager. This removes the previous need to utilise MicroDrainage parts lists, saving time in the design process and providing a greater level of detail.

    The new functionality allows MicroDrainage to provide representation of complex Civil3D® parts as ‘Generic Sections’ where no direct equivalent part currently exists in the MicroDrainage file.

    Autodesk part mapping manager

    Autodesk Civil3D parts mapping screenshot
  • FloodFlow Enhancements

    The need for overland flow analysis has grown considerably in recent years with more pressure now placed on engineers to show suitable surface water management under extreme rainfall events. MicroDrainage’s 2D analysis module, FloodFlow, enbles users to perform this type of analysis and has received some significant changes as part of the 2019 release.

    A new methodology, using local-inertial terms, has been included in FloodFlow’s analysis which is able to provide a closer solution to the full Shallow Water Equations (SWE) under the vast majority of surface water flooding conditions.

    MicroDrainage 2019.1 also improves the resolution at which the 2D model can be solved, in both FloodFlow and MDSuDS, by enabling analysis at grid cells sizes down to 0.25m resolution. This enables a whole new level of detail to the analysis from previous versions. For example, rather than just being able to identify that a road is used as an exceedance flow path route, it’s now possible to look precisely at exactly how that road will be utilised: for example, will the flooding occupy one or two lanes and which lanes will they be?

    MicroDrainage FloodFlow screengrabs
  • FEH Data Validation

    We’ve also added some validation elements for users looking to utilise FEH rainfall data. Previously, issues with Windows regional settings could lead to the import of FEH data to MicroDrainage failing.

    There's also a number of conditions for which the use of FEH data is inappropriate, such as the 7-day storm events, as intensity data for such long storms isn’t present in the FEH data set, so we’ve added some automatic validation to help you spot this and run only appropriate simulations.

    photo of rain splashing on pavement