dataset · United Kingdom
Government / regulator
Plynlimon research catchment high-frequency hydrochemistry data
This dataset includes rainfall, river and stream hydro-chemistry data from the River Hafren (Severn). The dataset represents high-frequency (7 hourly) monitoring of stream hydrochemistry at both the Lower and Upper Hafren site from 2007-2009, as well as rainfall hydrochemistry near the Carreg Wen meteorological site. Data for over 50 chemical determinands are presented alongside data for some in-situ measurements such as water temperature. Full descriptions of the analytical methods used for eac
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What's in it
- Data offered docs-verified
- rainfall hydrochemistry · river/stream hydrochemistry (7-hourly) · over 50 chemical determinands · in-situ water temperature · Raw Data Archive (RDA) variants
- Coverage docs-verified
- Plynlimon research catchments, headwaters of the River Severn, uplands of mid-Wales (Lower and Upper Hafren sites; rainfall near Carreg Wen met site) · 2007-03-06 to 2009-01-27
- Resolution docs-verified
- 7-hourly sampling (temporal); spatial resolution not stated (point sampling at gauged sites)
- Formats docs-verified
- CSV
- Access docs-verified
- Free download under the Open Government Licence; no authentication listed
Useful for
- Use cases llm-inferred
- Upland water-quality baseline for Severn headwater catchment assessments · Nitrate and DOC event-response analysis for diffuse pollution risk screening · Rainfall chemistry inputs for catchment water-quality modelling
- Audience llm-inferred
- hydrologists · water quality scientists · environmental consultants · catchment modellers
Limitations
- Constraints llm-inferred
- Time series covers only 2007-2009; not a current or ongoing feed · Raw Data Archive contains values believed to be substantially in error; routine analysis should use the edited data · Not an API or MCP tool; CSV download only · Spatial coverage limited to the Plynlimon/Hafren catchments
- Licence
- Open government licence
- Authentication
- Unknown — review source docs
- GitHub stars
- Unknown
- Last commit
- Unknown
- Last successful page check
- 16/10/2026
- Page health
- healthy
- Package
- Not recorded
- Verification
- Not independently verified
Provenance & evidence
Listed in ukceh-eidc public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata observed 14/10/2026 · research sweep: sweep-2026-10-16 (ukceh-eidc)