01

Engineering software

Focused tools. Reviewable results.

Specialist applications for catchment hydrology and hydraulic infrastructure, built around defined engineering tasks and documented calculation paths.

01 / Windows desktop

RoaDRain

Version 3.8.6Illustration of a catchment and downstream drainage network

Road drainage and
watershed hydrology.

Connect terrain-based catchments, rainfall–runoff analysis, crossing review and technical reporting in a single desktop study.

Applications
Road corridors · Independent watershed studies
Workflow
Inputs → DEM analysis → Engineering review → Reports
Deliverables
Technical and model reports, basin maps, GIS, spreadsheets and portable .rdn / .hdn projects
Access
Microsoft Store installation · Annual device license

02 / Browser application

Culvert Outlet
Protection

Version 3.1Culvert Outlet Protection application schematic

Continue the design
beyond the barrel.

Review the protection sequence from culvert outlet through the chute, basin and terminal sill to the natural channel.

Applications
Outlet energy dissipation · Erosion protection
Checks
Specific energy, Froude number, hydraulic jump, tailwater, sill control and flexible linings
Reference basis
HEC-14, HEC-15, and HDS-5 application-limit guidance
Deliverables
Proportional schematic and editable DOCX report

Connected engineering tasks

From catchment
to natural channel.

RoaDRain supports hydrologic assessment and preliminary drainage screening. Culvert Outlet Protection addresses the downstream hydraulic protection concept. Each retains its own inputs, assumptions and engineering limits.

Explore Hydroism

Tools and insight for water engineering.