Dec 1, 2025 – Autodesk released Autodesk InfoDrainage 2026.4 Update
The InfoDrainage 2026.4 Update is available via Autodesk Access or via download from the Autodesk subscription site.
The install requires access to the original install resources.
The listed official release date is Nov 30, 2025.
Autodesk InfoDrainage 2026.4 Update
InfoDrainage is an automated stormwater design software program that provides comprehensive assessment of stormwater designs.
InfoDrainage 2026.4 Update improves Civil 3D interoperability, and modelling control for SuDS design. Civil 3D pipe and structure styles are now preserved on import, and all newly introduced Civil 3D 2026.2 catchment runoff methods can be roundtripped reliably.
Modelling flexibility has increased, with swales able to receive inflows at surface or subsurface level, and bioretention systems able to accept inlets at the surface, soil, or storage layers, each influencing hydraulic performance. A new preference also allows users to manage automatic recalculation of land use and soil type for inflows, giving more predictable behavior during catchment editing.
Visit the Release Notes page.