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A stream near Alnwick, Northumberland. No gauge of its own: what the river map and the banked data say about it.
The River Aln is a stream on Ordnance Survey’s river map near Alnwick, Northumberland, with about 44 km of mapped channel. On the map it flows out to the sea.
None: the lower end of the River Aln is tidal on the river map. The tide carries water past a gauge both ways there, so no gauge is named downstream of it.
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: © Northumbrian 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.
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.
From its source towards its mouth, the settlements within a kilometre of it on the map: Alnham, Whittingham, Abberwick, Alnwick, Denwick, Lesbury, Hipsburn, Alnmouth.
Place names: OS Open Names. Contains OS data © Crown copyright and database rights 2026.
The map needs JavaScript. Everything it shows is listed on this page.
The blue line is the River Aln; grey lines are other mapped watercourses. Lines from OS Open Rivers (edition 2026-04).
Rivers and streams: OS Open Rivers. Contains OS data © Crown copyright and database rights 2026.
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