Reservoir Data

HydroData
This is Reclamation's hydrologic database access portal. We encourage everyone to take a look at our 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.)

The 40-Day Data application is being decommissioned, the same data is avaiable thru our HydroData portal above.

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

Storage
Teacup Diagrams

Reports and Studies

Reports
24-Month Study
Monthly Summary Reports
Annual Operating Plans
Consumptive Use and Loss Reports

Studies
5-Year Probabilistic Projections
Colorado River System Projections Overview
Colorado River Basin Water Supply & Demand Study
Climate Research & Development in the Colorado River Basin
Colorado River Basin Natural Flow & Salt Data

Legislation and Guidance
Colorado River Basin Drought Contingency Plans
DRO Summary Sheet
Colorado River Interim Guidelines
Law of the River
2017 Glen Canyon Operating Criteria Link is to a PDF file

Operational Data

Upper Colorado River
Aspinall Unit
Flaming Gorge
Fontenelle
Navajo
Glen Canyon

Working Group Information
Aspinall Working Group
Flaming Gorge Working Group
Flaming Gorge Technical Working Group
Fontenelle Working Group
Navajo Dam Technical Working Group
Glen Canyon Dam Adaptive Management Program

Other Operational Data
Lower Colorado River Basin
Colorado River Basin Research-to-Operations Program
Albuquerque Water Operations

General Info & Links

United States Geological Survey Data
USGS Water Data
USGS Water Alert

Climate & Weather Data
Colorado Basin River Forecast Center
Natural Resources Conservation Service Snow/Precipitation Data
National Oceanic and Atmospheric Administration’s National Integrated Drought Information System

State Engineer's Offices
Colorado Division of Water Resources
New Mexico Office of the State Engineer
Utah Division of Water Resources
Wyoming State Engineer's Office

Other Resources
Roster of Water User Organizations