Hydrohistorian
Plans
Open beta — everything is free right now.
Every water district in Colorado is unlocked for everyone, no account needed. The plans below are what tiers will mean once the beta ends; nothing is being charged today. An account is still worth making — it's what My Water uses to remember your structures.
Support this project → Pay what you want. It keeps the server on.
Hydrohistorian turns Colorado's public water records — DWR, the HydroBase archive, USGS — into per-basin flow networks, legal context, and century-scale history, with the provenance and independent cross-checks shown on every page.
Free
$0
- Clear Creek, in full — every tab, nothing held back
- Flow schematics, mass balance & trends
- Evolution animation & groundwater layer
- My Water for Clear Creek structures — add your WDIDs, see live call status
Pro
$29/month
- Every water district in Colorado — 77 basins
- My Water, statewide: your structures' live call exposure — which active calls out-priority your rights — new court filings on your WDIDs, and a warning when the state revises your published record
- WDID dossiers: printable due-diligence documents — full rights table, 15 years of recorded use, every figure pinned to a named data snapshot
- Water rights, seniority & call analysis statewide
- Groundwater corridors & advisory depletion screens
Team & agencies
Custom
- API access & data exports
- Revision alerts (“the state changed your history”)
- Custom basin curation & review support
Contact True Ascent Labs.
All outputs are advisory reading aids on public data — not administrative or legal conclusions, and not a substitute for DWR administration. Data: Colorado DWR/CDSS (HydroBase & REST), USGS NWIS. Methodology review status is disclosed on every basin page.