Channel Drain
Add a channel drain from the Water tab — a linear, surface-level grated drain with a configurable width, drawn as a path.
Channel DrainsChannel Drain draws a linear surface collector. Its width and optional start/end depth settings describe the proposed channel route. It remains a schematic drainage object.
Draw the channel
Open Water → Surface Collection → Channel Drain. Click two or more points along the planned route and finish with Enter or a double-click.
Set its width
Select the route and open Path properties. Set Channel Width with the unit-aware field; the supported range is 0.05–0.5 m, shown in project units. Add a Zone identifier if needed.
Inspect fall
Enable slope when needed and set Start Depth and End Depth. Inspect the computed Slope and any reverse-fall warning. The displayed slope includes the effect of terrain elevations; depth difference alone is not enough.
Document onward drainage
Draw a separate Drain Pipe route to the intended collection or outlet point. Check alignment in plan and 3D. The app does not certify collection efficiency or hydraulic capacity.