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 Avon Water above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
Named streams on the river map that flow into Avon Water and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.
13 storm overflows are traced upstream of Fairholm, Avon Water’s lowest gauge on the river map: on Avon Water itself, on its gauged tributaries, and on smaller streams that join above there.
0 report discharging now
12 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 Fairholm: 658 overflow events over 3,145 hours in total, across the 6 that have a figure. 7 have 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 Avon Water includes the smaller streams that join it there.
Between Avonbank and Fairholm13 overflows
Chapelton WwTW CSONot discharging Scottish Water · into Powmillon Burn · 20.9 km by river above Fairholm · no official annual figure
Renfrew, Dean Park SPS CSONot discharging Scottish Water · into Un-Named Watercourse · 17.0 km by river above Fairholm · no official annual figure · placed on the river by its position alone
Strathaven, S/O Townmill/Stonehouse RdNot discharging Scottish Water · into Powmillon Burn · 16.3 km by river above Fairholm · no official annual figure
Strathaven, Strathaven STW CSONot discharging Scottish Water · into Avon Water · 14.5 km by river above Fairholm · 2025: 106 overflow events, 362 h
Stonehouse WwTW SssoNot discharging Scottish Water · into Cander Water · 6.6 km by river above Fairholm · 2025: 158 overflow events, 336 h
Stonehouse WwTW CSONot discharging Scottish Water · into Cander Water · 6.5 km by river above Fairholm · 2025: 152 overflow events, 280 h
Larkhall, Birkenshaw SPS PcsoNot discharging Scottish Water · into Tributary Of Avon Water · 4.2 km by river above Fairholm · 2025: 38 overflow events, 56 h
Larkhall, Shaw Street CSONot discharging Scottish Water · into Avon Water · 3.8 km by river above Fairholm · no official annual figure
Larkhall, Braehead Wwps CSONot discharging Scottish Water · into Avon Water · 1.4 km by river above Fairholm · 2025: 93 overflow events, 531 h
Merryton Wwps (Fairholm St) CSONot discharging Scottish Water · into Tributary Of Avon Water · 310 m by river above Fairholm · no official annual figure
Near these gauges, connection not known
Within 3 km of one of Avon Water’s gauges in a straight line, but the river map cannot say whether their water reaches it.
Larkhall, High Merryton East EONot discharging Scottish Water · into Tributary Of River Clyde · 950 m from Fairholm in a straight line · its watercourse is not on the river map · no official annual figure
R/O 3 Karadale Gardens CSO Ns761509Not discharging Scottish Water · into Kitchen Burn · 1.2 km from Fairholm in a straight line · its watercourse is not on the river map · 2025: 156 overflow events, 164 h
Larkhall, Gallowhill Wwps CSONot discharging Scottish Water · into Kitchen Burn · 1.2 km from Fairholm in a straight line · its watercourse is not on the river map · 2025: 0 overflow events, 0 h
Larkhall, O/S 81 Low Pleasance CSONot discharging Scottish Water · into Skelly Gill · 1.5 km from Fairholm in a straight line · its watercourse is not on the river map · 2025: no data
8 other overflows within 3 km of these gauges are placed below Avon Water’s lowest gauge or on another river, so not listed.
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