dataset · United Kingdom
Government / regulator
Historic Standardised Streamflow Index (SSI) using Tweedie distribution with standard period 1961-2010 for 303 UK catchments (1891-2015)
This dataset contains the Standardised Streamflow Index (SSI) data for 303 catchments across the United Kingdom from 1891 to 2015. The SSI is a drought index based on the cumulative probability of a given monthly mean streamflow occurring for a given catchment. Here, the SSI is calculated for the following accumulation periods: 1, 3, 6, 9, 12, 18 and 24 months. Each accumulation period is calculated for calendar end-months. The standard period used to fit the Tweedie distribution is 1961-2010. T
Feature or claim this listing
Feature this listing — founding Featured slots are 50% off for 6 monthsRepresent Historic Standardised Streamflow Index (SSI) using Tweedie distribution with standard period 1961-2010 for 303 UK catchments (1891-2015)? Send a claim for review so we can discuss listing updates. Claims do not automatically grant ownership or verification.
What's in it
- Data offered docs-verified
- Standardised Streamflow Index (SSI) drought index · SSI at 1, 3, 6, 9, 12, 18 and 24-month accumulation periods · monthly SSI series for 303 UK catchments
- Coverage docs-verified
- United Kingdom (303 catchments) · 1891-01-01 to 2015-11-01
- Resolution docs-verified
- Monthly (calendar end-months); per catchment for 303 catchments
- Formats docs-verified
- CSV
- Access docs-verified
- Open Government Licence; downloadable from the NERC EIDC datastore; documented scripted download uses a personal access token
Useful for
- Use cases llm-inferred
- Historic drought severity context for water resources and water scarcity assessments in UK catchments · Benchmarking current low-flow conditions against 1891-2015 hydrological drought history · Drought risk narrative in environmental impact or water resources reports
- Audience llm-inferred
- hydrologists · water resources engineers · environmental consultants · flood risk consultants
Limitations
- Constraints llm-inferred
- Input flows are modelled reconstructed streamflow, not observed gauge records · Covers 303 catchments only, so no coverage of other sites · Tweedie fit uses a fixed standard period of 1961-2010 · Historic series ends 2015-11 and no update schedule is stated · Download examples require a personal access token
- 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)