London Colney

River Colne · London Colney · Colne (Upper)

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RiverRiver ColneWatercourse named by the publisher

CatchmentColne (Upper)Environment Agency catchment context

Station ID2814THUse this when checking the official source

Published location

Where is London Colney?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

51.719476, -0.289861

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Map data © OpenStreetMap contributors

What this reading tells you

It is the latest value published for this monitoring instrument at the stated observation time. The unit mASD is retained from the Environment Agency measure record.

This page does not currently have an approved typical range or warning threshold for this measure, so it does not label the reading as high, normal or low.

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A gauge reading is not a flood warning or a property-risk assessment. Use the official warning service for current alerts and follow emergency-service advice.

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Technical record and provenance

Station reference

2814TH

Station opened

1 Jan 1995

Latitude

51.719476

Longitude

-0.289861

Source

Environment Agency Flood Monitoring API

API retrieval

30 Aug 2026, 20:53

Raw measure identifier

http://environment.data.gov.uk/flood-monitoring/id/measures/2814TH-level-stage-i-15_min-mASD

Source, licence and methodology