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Allen's Brook

A stream near Monkton Heathfield, Somerset. No gauge of its own: what the river map and the banked data say about it.

Allen's Brook is a stream on Ordnance Survey’s river map near Monkton Heathfield, Somerset, with about 2.2 km of mapped channel. On the map it flows into Old River Tone, which flows on into the River Tone, then the River Parrett and out to the sea.

Next gauge downstream

Bathpool Outfall on Old River Tone, about 270 m along the river below where Allen's Brook ends on the map.

7.95 mAOD Below normal · steady 45 min ago

After that, Bathpool Outfall, about 330 m along the river.

No gauge measures Allen's Brook 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 Allen's Brook

1 storm overflow is placed on this stream on the river map. Each status is the water company’s own monitor.

Allens Brook CSO Not discharging
Wessex Water · into Allen's Brook · 2025: 17 spills, 144 h

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: © Wessex Water storm overflow activity data, licensed under CC BY 4.0. Annual spill figures: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence (OGL) v3.0.

Places along it

From its source towards its mouth, the settlements within a kilometre of it on the map: Gotton, Sidbrook, Cheddon Fitzpaine, Monkton Heathfield, Maidenbrook, Bathpool, Halcon.

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 Allen's Brook; grey lines are other mapped watercourses. Lines from OS Open Rivers (edition 2026-04).

Old River Tone, the river it joins →TA2 8BD, a postcode page near where it ends on the map (about 20 m away) →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 Allen's Brook 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.

This uses Environment Agency flood and river level data from the real-time data API (Beta). Licence: Open Government Licence v3.0.