PASAR API

🇬🇧 Environment Agency ~ hydrology: rainfall & river flow

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Keyless (Open Government Licence); ~8,000 stations with historic + recent rainfall, river flow/level, groundwater and water-quality readings, sub-daily and daily.

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Call it

curl 'https://environment.data.gov.uk/hydrology/'

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I'm building an app using a free United Kingdom API (no auth needed).

API: Environment Agency ~ hydrology: rainfall & river flow
Provider: Environment Agency (Defra)
Endpoint: GET https://environment.data.gov.uk/hydrology/
It returns JSON.

Source: Environment Agency (Defra) (https://environment.data.gov.uk/hydrology/doc/reference)
Source type: Official open-data catalogue
Endpoint type: Open-data catalogue JSON
Integration difficulty: Copy-paste ready
Last checked: 2026-07-05
Production caveat: Still handle empty rows, schema changes, pagination, stale coverage, and temporary upstream failures.

Help me fetch this and build a simple page that displays it nicely. Include basic production safeguards for errors, empty responses, schema changes, caching, and rate limits.

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