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The figures behind this site, joined up and ready to use. Free to reuse, including commercially, with attribution.

Storm overflows by constituency, 2025

One row per constituency: overflows, discharges and hours, with the sitting MP. Each overflow is counted in the constituency of its nearest postcode.

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Every storm overflow, 2025

One row per monitored overflow: company, site, receiving water, discharges, hours, monitor uptime, location and constituency.

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Rail stations, 2024-25

One row per station: journeys, season ticket journeys, the busiest journey made from it, operator, location and constituency.

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Sources and licence

Storm overflow figures are the Environment Agency's Event Duration Monitoring annual returns. Station usage is the Office of Rail and Road's Estimates of Station Usage, and station locations are the Department for Transport's NaPTAN. Constituencies come from postcodes.io. All contain public sector information licensed under the Open Government Licence v3.0 ↗. Please credit the original source, and CitizenTech for the joining.