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Isla (Tayside) water levels

Live levels from 4 monitoring stations across Angus, Perth and Kinross, updated every 15 minutes.

4stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Forter—0.99 m 30m agoNormal—
Wester Cardean—0.43 m 15m agoNormal—
Balbrogie—0.56 m 15m agoNormal—
Links Farm—0.40 m 30m 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 Isla (Tayside) 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, 4 gauges

Dean Water

Joins the Isla (Tayside) between Wester Cardean and Balbrogie, no more than 10.9 km by river above Balbrogie.

Dean Bridge0.15 m 15m agoNormal

Its water passes Balbrogie and every gauge below it on the Isla (Tayside). It does not pass Wester Cardean or the gauges above it.

Ericht

Joins the Isla (Tayside) between Balbrogie and Links Farm, no more than 22.8 km by river above Links Farm.

Craighall (Perth)0.62 m 15m agoNormal

Its water passes Links Farm and every gauge below it on the Isla (Tayside). It does not pass Balbrogie or the gauges above it.

Gauged streams joining the Ericht

Lunan Burn

Joins the Isla (Tayside) between Balbrogie and Links Farm, no more than 3.2 km by river above Links Farm.

Mill Bank0.35 m 30m agoNormal

Its water passes Links Farm and every gauge below it on the Isla (Tayside). It does not pass Balbrogie or the gauges above it.

Where the Isla (Tayside) goes

Below Links Farm, its water next reaches Ballathie, a gauge on Tay, 3.9 km by river downstream.

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

11 storm overflows are traced upstream of Links Farm, the Isla (Tayside)’s lowest gauge on the river map: on the Isla (Tayside) itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 8 not discharging
  • 3 offline or silent: 3 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflows traced upstream of Links Farm: 569 overflow events over 719 hours in total, across the 10 that have a figure. 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 the Isla (Tayside) includes the smaller streams that join it there.

Between Forter and Wester Cardean6 overflows
  • Alyth Bridge St CSO No246485 Monitor offline
    Scottish Water · into Alyth Burn · 9.2 km by river above Wester Cardean · 2025: 31 overflow events, 14 h
  • Alyth James St CSO No248484 Not discharging
    Scottish Water · into Alyth Burn · 9.1 km by river above Wester Cardean · 2025: 14 overflow events, 5.3 h
  • Alyth, David Street CSO Not discharging
    Scottish Water · into Alyth Burn · 9.1 km by river above Wester Cardean · 2025: 3 overflow events, 0.6 h
  • Alyth, Diamond Jubilee Park CSO Monitor offline
    Scottish Water · into Alyth Burn · 8.9 km by river above Wester Cardean · 2025: 20 overflow events, 5.3 h
  • Alyth STW Inlet Works 6 Dwf CSO Not discharging
    Scottish Water · into Alyth Burn · 8.3 km by river above Wester Cardean · 2025: 88 overflow events, 332 h
  • Alyth WwTW Ssso 2014 No256483 Monitor offline
    Scottish Water · into Alyth Burn · 8.3 km by river above Wester Cardean · 2025: 2 overflow events, 0.3 h
Dean Water, above Dean Bridgejoins the Isla (Tayside) above Balbrogie2 overflows
  • Glamis WwTW CSO Not discharging
    Scottish Water · into Glamis Burn · 15.6 km by river above Dean Bridge · 2025: 119 overflow events, 164 h
  • Glamis WwTW - Post-Psts Ssso Not discharging
    Scottish Water · into Glamis Burn · 15.6 km by river above Dean Bridge · 2025: 139 overflow events, 177 h
Between Balbrogie and Links Farm3 overflows

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.