CLIMATE · INTELLIGENCE · OPEN

The state of the world's water,
rendered legible.

An open source platform for hydrological data — dams, reservoirs, streamflow, snowpack, groundwater. Built for researchers, operators, journalists and anyone who needs a clearer picture of the watershed.

Open the map Read methodology
— 02 / Live reservoir operations

Colorado & California, live.

Real storage across every reservoir we track — each system's fill is the sum of what's stored today against total capacity, refreshed daily from USBR and CDEC.

View on map ↗

System fill = Σ current storage ÷ Σ maximum capacity across the system's reservoirs. Current values are illustrative pending the live wire; the daily feed comes from USBR RISE and CDEC (sensor 15).

— 03 / What's on the map

Everything we show — and what's next

The exact layers you can explore right now, counted, versioned and cited — plus what's in QA before it goes live.

380K+georeferenced records
6live datasets
9energy trackers
2live river basins
Live now6 datasets · 380K+ records
41,145DAMS
Global Dams
Global Dam Watch v1.0
15,751PLANTS
US Power Plants
EIA-860M · Apr 2026
94KLINES
Transmission Lines
HIFLD · US · by voltage
4,246SEGMENTS
Gas Pipelines
GEM GGIT · global
44,656SYSTEMS
Utility Service Areas
EPA Community Water Systems
183KFACILITIES
Energy Facilities
Global Energy Monitor · 9 trackers
103K solar33K wind14.5K coal6.8K hydro1.7K nuclear
Coming soonin QA
Water Rights
State-level allocations, seniority and priority dates across the Western states.
WestDAAT · Western States Water Council
Hydrological Data
The physical water cycle — watersheds, evapotranspiration, snowpack and streamflow.
USGS · NASA · NOAA
Water Intelligence
The modelling suite — ecosystems, utilities, water costs and drought risk.
4 modules · Q4 2026
Open — every source public & free· Versioned — dated snapshots· Cited — traceable to the agency
— 04 / WHY

Water data lives in dozens of disconnected systems — state agencies, federal observatories, private operators, satellite archives. The people who need it most spend days stitching it together.

We're building the stitching, in public.