England Flood Warnings for Asset Portfolios

Check 1-100 asset coordinates against official England flood warning polygons. Track changes, withdrawn notices and incomplete checks.

Input

Provide assets as JSON objects with unique ASCII id, English name, longitude and latitude (WGS84). Between 1 and 100 assets are accepted. Coordinates are not geocoded or checked against England's border; the source covers England only. These are user locations, not automatically discovered properties.

Example:

{"assets":[{"id":"warehouse-1","name":"Example warehouse","longitude":-0.1278,"latitude":51.5074}],"mode":"snapshot","maxWarnings":1000,"maxGeometryDownloads":100}

mode: snapshot returns every asset; changes returns changed checks. Changes mode requires a separate named stateStoreId; establish a baseline and run sequentially. Empty warning feeds are valid. maxWarnings is 1-5000, maxGeometryDownloads is 1-500. Reaching either limit makes results incomplete. Boundaries are cached in the named state store for six hours, refreshed after expiry, and capped at 500 entries and 24 MB of serialized cache. Fresh response bytes are limited to 24 MB per run. Stale boundaries are not reused when refresh fails. A collection can contain multiple Polygon or MultiPolygon features. Outer boundaries count as included; hole boundaries are excluded.

Output

One dataset row per asset, with stable id, name, fields, origins and change. fields includes assetId, coordinates [longitude, latitude], status, complete, matches, missingGeometry, noMatchingWarningMeansSafe, sourceUrl, license and attribution. Each match preserves official severity, message, areaCode, changedAt, severityChangedAt, raisedAt, sourceUrl and geometryUrl. Observation time is provenance and does not trigger a change.

status is active_warning (official severity 1-3), withdrawn_warning (severity 4), no_matching_warning, incomplete, or source_error. Incomplete checks retain known matches but do not establish the absence of other matches. Errors and partial checks never replace a complete saved baseline. State is saved only for records delivered within the spending limit.

No matching warning does NOT mean safe. This is not a flood risk assessment or prediction, an emergency alert service, or a substitute for official warnings. It does not cover Scotland, Wales or Northern Ireland, historical warnings, or every source of surface-water flooding. The official feed is a Beta service and can change or be delayed. Use https://check-for-flooding.service.gov.uk/ for official guidance.

Pricing

Pay per event: $0.04 per Actor start + $0.40 per 1,000 delivered records ($0.0004 each). A run returning 100 records costs $0.08 in event charges; a run returning 10 costs $0.044; a run returning no records is charged the $0.04 start fee. Platform usage (compute) is billed to your account separately at standard Apify rates. No monthly rental.

Source and attribution

This uses Environment Agency flood and river level data from the real-time data API (Beta). Contains Environment Agency information licensed under the Open Government Licence v3.0: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ . Official API: https://environment.data.gov.uk/flood-monitoring/doc/reference . No endorsement is implied.