New – Review of the 2007 Colorado River Interim Guidelines (7.D. Review)

Water Operations

Reservoir Data

This is Reclamation's new hydrologic database access portal. These new tools are designed to replace the Data Retrieval and Current Condition apps below, as they begin to reach the end of their functional lifespans. We encourage everyone to take a look at our new and improved access portal and begin plans to transition to this improved data delivery source.

Reservoir Data (storage, inflow, releases, elevation & more)
Gage Data (flow, flow volume & side inflows.)

Data Retrieval (apps nearing end of life)
40-Day Data
Historic Data

Current Conditions

System Overview
HydroData Basin Maps (current reservoir capacity & current and historical snow and precipitation charts)
Weekly Hydrology Summary Link is to a PDF file

Teacup Diagrams

Seasonal Notices
The Snowpack Conditions Map has been decommissioned to see current and historical snowfall data please visit the HydroData Basin Maps link above.

Contact us

Please contact the Operations Group via e-mail at for additional questions or information.

Last Updated: 7/7/22