Browser access
Open https://roadrain.hydroism.com in a current Chrome, Edge, Firefox, or Safari release. Enable JavaScript, downloads, and the map resources required by the workspace.
RD
RoaDRain web-app support
Open. Analyse. Continue.
The official browser and project reference for RoaDRain v2.9.2 Beta, covering Road Drainage, Watershed Hydrology, saved projects, inputs, outputs, and hosted services.
01
Quick guidance
The essential browser workflow.
Road projects
Use the Road Drainage workspace for an alignment-led corridor analysis. Save creates a portable .rdn project file; Open restores a compatible Road project.
Watershed projects
Use the Watershed Hydrology workspace for outlet points or selected project areas. Save as .hdn preserves the Watershed project for later continuation.
Project inputs
Verify coordinate reference systems, geometry, terrain coverage, rainfall data, return periods, runoff assumptions, and project metadata before starting an analysis.
Generated outputs
GIS layers, spreadsheets, charts, reports, and complete project packages download through the browser. Your browser's download settings determine the destination folder.
Engineering review
Treat every result as preliminary. Check warnings, map geometry, source data, hydrologic assumptions, retained basins, crossings, and indicative structures before professional use.
02
Internet requirements
One browser workspace, several managed data services.
RoaDRain is a hosted application. The following functions require a stable internet connection and may depend on external data or AI services.
Application and map interface
Project upload and analysis
Public DEM and land-cover data
Online rainfall sources
Optional AI engineering review
Project and output downloads
03
Problem reporting
Capture the context without exposing sensitive data.
A useful support report identifies the module, RoaDRain version, browser, project stage, exact error, and whether the issue can be reproduced with a non-confidential sample.
Before contacting support
Record the exact message and the action that triggered it. Do not send confidential project files, OpenAI keys, private service tokens, or sensitive client information through an unsecured channel.
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