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Powmillon Burn

A stream near Strathaven, South Lanarkshire. No gauge of its own: what the river map and the banked data say about it.

Powmillon Burn is a stream on Ordnance Survey’s river map near Strathaven, South Lanarkshire, with about 7.1 km of mapped channel. On the map it flows into Avon Water, which flows on into the River Clyde and out to the sea.

Next gauge downstream

Fairholm on Avon Water, about 15 km along the river below where Powmillon Burn ends on the map.

0.35 m Normal · easing 30 min ago

After that, Blairston, about 26 km along the river.

No gauge measures Powmillon Burn itself. A gauge downstream shows water that has already passed it, mixed with everything else that has joined on the way, so it says nothing exact about this stream.

Storm overflows on Powmillon Burn

4 storm overflows are placed on this stream on the river map. Each status is the water company’s own monitor.

Strathaven, S/O Townmill/Stonehouse Rd Not discharging
Scottish Water · into Powmillon Burn · no official annual figure
Renfrew, Dean Park SPS CSO Not discharging
Scottish Water · into Un-Named Watercourse · no official annual figure · placed on the river by its position alone
Strathaven, W/O Bowling Gn/Threestanes R Not discharging
Scottish Water · into Powmillon Burn · no official annual figure
Chapelton WwTW CSO Not discharging
Scottish Water · into Powmillon Burn · no official annual figure

A status says whether an overflow is discharging now, never how much or why. A monitor that is offline or has not reported is not “not discharging”. 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.

Places along it

From its source towards its mouth, the settlements within a kilometre of it on the map: Shawton, Chapelton, Strathaven.

Place names: OS Open Names. Contains OS data © Crown copyright and database rights 2026.

On the map

The map needs JavaScript. Everything it shows is listed on this page.

The blue line is Powmillon Burn; grey lines are other mapped watercourses. Lines from OS Open Rivers (edition 2026-04).

Avon Water, the river it joins →All rivers with gauges →

What this page can and cannot tell you

Its line, its name and where it flows come from Ordnance Survey’s river map (OS Open Rivers, edition 2026-04), which leaves out many small streams, ditches and culverts. “Flows into” is the map’s word: a channel that is not on the map is not shown here, which does not mean it is not there.
No gauge measures Powmillon Burn itself, so its own level is not known here.
Storm overflows are listed only where the river map places them on this stream; an overflow it could not place is not counted.
No water-sampling point with a banked sample is placed on this stream. Only England’s samples are banked, and only where the map can place their sampling point.
Nothing on this page says whether any place floods. For an address, see its postcode page.