Home › Rivers › Nunn Brook

Nunn Brook

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

Nunn Brook is a stream on Ordnance Survey’s river map near Hilcote, Derbyshire, with about 670 m of mapped channel. On the map it flows into Normanton Brook, which flows on into Alfreton Brook, then the River Amber, then the River Derwent, then the River Trent, then the River Humber and out to the sea.

Next gauge downstream

Wingfield Park on the River Amber, about 14 km along the river below where Nunn Brook ends on the map.

0.26 mASD Normal · steady 30 min ago

After that, Derby City, about 40 km along the river.

No gauge measures Nunn 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 Nunn Brook

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

Huthwaite Sewage Treatment Works Not discharging
Severn Trent Water · into Nunn Brook · 2025: 67 spills, 261 h
Huthwaite Sewage Treatment Works Not discharging
Severn Trent Water · into Nunn Brook · 2025: 29 spills, 317 h
Springwell Street CSO Not discharging
Severn Trent Water · into Nunn Brook · 2025: 0 spills, 0 h
Sutton In Ashfield - Cross Lane (CSO) Not discharging
Severn Trent Water · into Nunn Brook · 2025: 3 spills, 0.6 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 Nunn Brook

3 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.

Alfreton Brook downstream of Huthwaite sewage treatment works (New)
No sample published 1 Oct 2023 – 30 Sep 2026
Alfreton/Nunn Brook downstream of Huthwaite sewage treatment works
No sample published 1 Oct 2023 – 30 Sep 2026
Alfreton Brook Common Road downstream of Sutton Tip
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.

On the map

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

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

Normanton Brook, the stream it joins →NG17 2JL, a postcode page near where it ends on the map (about 840 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 Nunn 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.