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Flagshaw Brook

A stream near Kirk Langley, Derbyshire. No gauge of its own: what the river map and the banked data say about it.

Flagshaw Brook is a stream on Ordnance Survey’s river map near Kirk Langley, Derbyshire, with about 2.2 km of mapped channel. On the map it flows into Mackworth Brook, which flows on into Markeaton Brook, then the River Derwent, then the River Trent, then the River Humber and out to the sea.

Next gauge downstream

Derby Bridge Street on Markeaton Brook, about 5.7 km along the river below where Flagshaw Brook ends on the map.

0.77 mASD Normal · steady 29 min ago

After that, Church Wilne, about 24 km along the river.

No gauge measures Flagshaw 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 Flagshaw Brook

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

Kirk Langley STW Not discharging
Severn Trent Water · into Flagshaw Brook · 2025: 63 spills, 657 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: © Severn Trent 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.

Water-sampling points on Flagshaw Brook

2 Environment Agency sampling points are placed on this stream. These are dated samples taken by hand, not live readings, and FloodRadar does not grade them.

Mackworth Brook at Kirk Langley
Last sampled 6 Aug 2026 · 56 days ago · 35 samples banked
Mackworth Brook downstream of Kirk Langley
No sample published 1 Oct 2023 – 30 Sep 2026

A sample is taken on a date; it says nothing about the water today. A sample below an overflow does not by itself show where anything in it came from.

Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.

Places along it

From its source towards its mouth, the settlements within a kilometre of it on the map: Kirk Langley.

On the map

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

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

Mackworth Brook, the stream it joins →DE22 5JH, a postcode page near where it ends on the map (about 1.6 km 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 Flagshaw 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.
Water samples are England’s only (the Environment Agency’s archive), placed 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.