# Rain across London

> Forty-odd gauges, and rain that rarely falls on all of them at once.

- Category: Environment
- Cadence: live
- Status: Live: values change continuously; cite the retrieval time.
- Dataset key: `live-rain`
- Source: [Environment Agency](https://environment.data.gov.uk/flood-monitoring/doc/reference)
- Licence: Open Government Licence v3.0 — [terms](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Canonical page: [https://londongraph.com/g/rain-across-london](https://londongraph.com/g/rain-across-london)
- Machine-readable record: [https://londongraph.com/data/rain-across-london](https://londongraph.com/data/rain-across-london)

## Methodology

Latest rainfall readings from Environment Agency gauges within 30km of central London. Each gauge reports millimetres accumulated in its own reporting period, so the figures are comparable between gauges at a moment rather than as a running total.

## Visualisations

- [Map](https://londongraph.com/g/rain-across-london): Forty-odd gauges, and rain that rarely falls on all of them at once.
- [Hotspots](https://londongraph.com/g/rain-across-london?view=hotspots): Compare the same measure geographically.

## Citation guidance

Attribute the original publisher named above and identify LondonGraph as the visualisation and methodology layer. Do not describe live values as a historical census, and do not present placeholder values as observations.