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 Endrick 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.
6 storm overflows are traced upstream of Gaidrew, Endrick Water’s lowest gauge on the river map: on Endrick Water itself, on its gauged tributaries, and on smaller streams that join above there.
0 report discharging now
5 not discharging
1 offline or silent: 1 monitor offline, 0 status unknown, 0 no live feed
Official figures for 2025, for the overflows traced upstream of Gaidrew: 490 overflow events over 3,952 hours in total, across the 4 that have a figure. 1 had no data that year; 1 has no 2025 figure. Scottish Water counts overflow events, not the 12/24-hour spills counted in England and Wales, so this total cannot be set beside theirs.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of Endrick Water includes the smaller streams that join it there.
Fintry WwTW - Post Psts SssoMonitor offline Scottish Water · into Endrick Water · 4.7 km by river above Graystone Bridge · 2025: 363 overflow events, 3,037 h
Between Graystone Bridge and Gaidrew2 overflows
Killearn WwTW CSONot discharging Scottish Water · into Blane Water · 5.9 km by river above Gaidrew · 2025: no data
Killearn WwTW Ssso And EONot discharging Scottish Water · into Blane Water · 5.9 km by river above Gaidrew · 2025: 12 overflow events, 72 h
Blane Water, above Quinloch Bridgejoins Endrick Water above Gaidrew3 overflows
Strathblane WwTW CSONot discharging Scottish Water · into Blane Water · 3.5 km by river above Quinloch Bridge · 2025: 111 overflow events, 775 h
Strathblane WwTW - (New) SssoNot discharging Scottish Water · into Blane Water · 3.5 km by river above Quinloch Bridge · 2025: 4 overflow events, 67 h
Strathblane WwTW - (Old) SssoNot discharging Scottish Water · into Blane Water · 3.5 km by river above Quinloch Bridge · no official annual figure
1 other overflow within 3 km of these gauges is placed below Endrick Water’s lowest gauge or on another river, so not listed.