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Avon (Forth Valley) water levels

Live levels from 1 monitoring station across Falkirk, updated every 15 minutes.

1stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Polmonthill—0.51 m 28m agoNormal—

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.

Contains OS data © Crown copyright and database rights 2026.

Gauged tributaries

Streams and rivers with a gauge whose water joins the Avon (Forth Valley) 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.

No gauged tributary joins the Avon (Forth Valley) above Polmonthill on the river map. Streams without a gauge are not counted here.

Where the Avon (Forth Valley) goes

No gauge below Polmonthill is known on the river map.

Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.

Storm overflows upstream

12 storm overflows are traced upstream of Polmonthill, the Avon (Forth Valley)’s lowest gauge on the river map: on the Avon (Forth Valley) itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 12 not discharging
  • 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflows traced upstream of Polmonthill: 166 overflow events over 2,568 hours in total, across the 5 that have a figure. 1 had no data that year; 6 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 the Avon (Forth Valley) includes the smaller streams that join it there.

Above Polmonthill, the Avon (Forth Valley)’s highest gauge12 overflows
  • Bathgate, Hunter Grove CSO Not discharging
    Scottish Water · into Bog Burn · 25.8 km by river above Polmonthill · no official annual figure
  • Blackridge, Off Bedlormie Drive CSO Not discharging
    Scottish Water · into Culverted Tributary Of Barbauchlaw Burn · 25.7 km by river above Polmonthill · 2025: 0 overflow events, 0 h
  • Blackridge, Westcraigs Road CSO Not discharging
    Scottish Water · into Barbauchlaw Burn · 24.9 km by river above Polmonthill · no official annual figure
  • Bathgate, Whitehill SPS CSO Not discharging
    Scottish Water · into Bog Burn · 24.4 km by river above Polmonthill · no official annual figure
  • Blackburn, Inchmuir Road CSO Not discharging
    Scottish Water · into Bog Burn · 24.4 km by river above Polmonthill · 2025: 28 overflow events, 218 h
  • Bathgate, Mosside SPS CSO Not discharging
    Scottish Water · into Bog Burn · 23.8 km by river above Polmonthill · 2025: no data
  • Bathgate, Bathgate Golf Course CSO Not discharging
    Scottish Water · into Bog Burn · 23.3 km by river above Polmonthill · no official annual figure
  • Bathgate, Ballencrief CSO Not discharging
    Scottish Water · into Middlerigg Burn · 21.1 km by river above Polmonthill · no official annual figure · placed on the river by its position alone
  • Bathgate WwTW - 3dwf Post-Pst Ssso Not discharging
    Scottish Water · into Couston Water · 19.9 km by river above Polmonthill · 2025: 37 overflow events, 456 h
  • Armadale WwTW-Storm Tank Ssso Not discharging
    Scottish Water · into Barbauchlaw Burn · 19.4 km by river above Polmonthill · 2025: 79 overflow events, 1,428 h
  • Maddiston, Bus Terminus No1 CSO Not discharging
    Scottish Water · into Tributary Of Manuel Burn · 11.4 km by river above Polmonthill · no official annual figure
  • Linlithgow WwTW - No1 (6dwf) CSO Not discharging
    Scottish Water · into River Avon · 4.6 km by river above Polmonthill · 2025: 22 overflow events, 467 h

Near these gauges, connection not known

Within 3 km of one of the Avon (Forth Valley)’s gauges in a straight line, but the river map cannot say whether their water reaches it.

  • Polmonthill, Polmonthill SPS CSO Not discharging
    Scottish Water · into River Avon · 70 m from Polmonthill in a straight line · too close to Polmonthill to say which side · no official annual figure
  • Kinneil Kerse WwTW Ssso Not discharging
    Scottish Water · into River Avon · 2.0 km from Polmonthill in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 105 overflow events, 39 h

2 other overflows within 3 km of these gauges are placed below the Avon (Forth Valley)’s lowest gauge or on another river, so not listed.

A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →

Live status: © Scottish Water, near-real-time Overflow Map data, open licence for reuse. EDM monitors indicate overflows; they do not confirm them, and this is not advice on water quality. Annual figures for Scotland: Scottish Water overflow event data, Open Government Licence.