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Forth water levels

Live levels from 2 monitoring stations across Stirling, updated every 15 minutes.

2stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
GargunnockGargunnock1.50 m 17m agoNormal▽
Craigforth—0.56 m 17m 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 Forth 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.

3 gauged tributaries, 11 gauges

Duchray Water

Joins the Forth above Gargunnock, its highest gauge, no more than 41.9 km by river above Gargunnock.

Duchray Water0.53 m 17m agoNormal
Renagour Bridge0.44 m 32m agoNormal

Its water passes every gauge on the Forth, from Gargunnock down.

Loch Ard

Joins the Forth above Gargunnock, its highest gauge, no more than 42.0 km by river above Gargunnock.

Loch Ard1.15 m 17m agoNormal

Its water passes every gauge on the Forth, from Gargunnock down.

Teith

Joins the Forth between Gargunnock and Craigforth, no more than 9.1 km by river above Craigforth.

Callander0.38 m 32m agoNormal
Bridge of Teith0.77 m 17m agoNormal

Its water passes Craigforth and every gauge below it on the Forth. It does not pass Gargunnock or the gauges above it.

Gauged streams joining the Teith

  • Eas Gobhain: joins the Teith above Callander (its lowest gauge is 3.2 km by river above it). Gauge, source first: Loch Venachar Normal; and 1 more gauge further up (see its own page).
  • Leny: joins the Teith above Callander (its lowest gauge is 6.2 km by river above it). Gauge, source first: Anie Normal; and 3 more gauges further up (see its own page).

Where the Forth goes

No gauge below Craigforth 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

8 storm overflows are traced upstream of Craigforth, the Forth’s lowest gauge on the river map: on the Forth itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 8 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 Craigforth: 357 overflow events over 362 hours in total, across the 3 that have a figure. 5 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 Forth includes the smaller streams that join it there.

Above Gargunnock, the Forth’s highest gauge1 overflow
  • Gartmore WwTW CSO Not discharging
    Scottish Water · into Claggans Burn · 35.2 km by river above Gargunnock · 2025: 38 overflow events, 34 h
Between Gargunnock and Craigforth2 overflows
Teith, above Bridge of Teithjoins the Forth above Craigforth5 overflows
  • Bridge Street Wwps CSO Nn628077 Not discharging
    Scottish Water · into River Teith · 13.9 km by river above Bridge of Teith · no official annual figure
  • Callander, Footbridge Pearl St South CSO Not discharging
    Scottish Water · into River Teith · 13.8 km by river above Bridge of Teith · 2025: 65 overflow events, 48 h
  • Callander, Pearl St South CSO Not discharging
    Scottish Water · into River Teith · 13.8 km by river above Bridge of Teith · 2025: 254 overflow events, 280 h
  • Deanston WwTW CSO Not discharging
    Scottish Water · into River Teith · 1.4 km by river above Bridge of Teith · no official annual figure
  • Deanston WwTW Ssso Not discharging
    Scottish Water · into River Teith · 1.4 km by river above Bridge of Teith · no official annual figure

Near these gauges, connection not known

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

  • Stirling, Drip Road CSO Not discharging
    Scottish Water · into River Forth · 980 m from Craigforth in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 0 overflow events, 0 h
  • Stirling, Woodside Road CSO Monitor offline
    Scottish Water · into River Forth · 1.8 km from Craigforth in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 54 overflow events, 373 h
  • Stirling, Laurence Croft Road CSO Not discharging
    Scottish Water · into River Forth · 2.2 km from Craigforth in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 59 overflow events, 181 h
  • Stirling Dean Crescent CSO Ns801943 Not discharging
    Scottish Water · into River Forth · 2.7 km from Craigforth in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 286 overflow events, 697 h

1 other overflow within 3 km of these gauges is placed below the Forth’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.