Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.
Streams and rivers with a gauge whose water joins Ruchill Water above one of its gauges, from the source down. The river map knows where gauges are, not every stream, so a tributary without a gauge is not listed here.
1 gauged tributary, 1 gauge
Allt Srath a' Ghlinne name from the river map
Joins Ruchill Water above Cultybraggan, its highest gauge, no more than 10.5 km by river above Cultybraggan.
None of the storm overflows FloodRadar holds is traced upstream of Cultybraggan on the river map. That is not the same as none: the map leaves out many small streams and culverts, so an overflow it cannot place may still drain here, and not every company publishes every overflow.
1 other overflow within 3 km of these gauges is placed below Ruchill Water’s lowest gauge or on another river, so not listed.