Data & provenance
Trusted sources, preserved end to end.
WatersMap keeps raw downloads intact, normalizes for analysis, and documents every transformation so you can defend decisions.
Every ingest is auditable.
Raw files, metadata, and lineage are stored alongside normalized tables so analyses stay reproducible over time.
Source catalog highlights.
Public, authoritative sources with tracked updates.
| Source | Coverage | Focus | Update cadence |
|---|---|---|---|
| EEA Waterbase | EU | Water quality | Snapshot release |
| WQP | US | Monitoring stations | Rolling |
| GEMStat | Global | Open subset | Periodic |
Snapshot pipeline.
From discovery to serving, every step is documented.
Discover
Watch portals and release notes.
Snapshot
Store raw downloads with metadata.
Normalize
Standardize parameters and units.
Validate
Automated QA checks and lineage tags.
Serve
API, downloads, and map layers.
Quality guardrails.
Designed to reduce ambiguity and build trust.
Metadata completeness
Sampling method, units, and timing preserved.
Lineage tags
Every record links back to its source snapshot.
Change tracking
Audit changes over time for consistency.
Need a specific dataset?
Tell us the source and region you care about.