Lower Colorado River Operations


Current Conditions

Hourly Conditions
Current Plus Past 6 Days

Daily Reservoir Conditions
Current Month
Past Months

Other Operations Data
Data Explorer
Reservoir Teacup Diagram
Upper Basin Information

USGS Data
USGS Water Data
USGS Water Alert

Climate & Weather Data
Colorado Basin River Forecast Center
NRCS Snow-Precipitation Data, Upper Basin
NRCS Snow-Precipitation Data, Arizona


Projected Operations

Real-Time Operations Outlook (updated hourly)
River Operations Schedule

Hourly Schedules (updated daily)
Davis Dam & Parker Dam
Headgate Rock Dam

10-Day Lake Mead Outlook (updated daily)
Daily Elevation Projections

Operations Outlook (updated weekly)
River Operations Schedule
Lake Mead/Hoover Dam
Lake Mohave/Davis Dam
Lake Havasu/Parker Dam

2-Year Projected Operations
24-Month Study Current (updated monthly)
24-Month Study Archives (2010 to present)
2-Year Probabilistic Projections (updated monthly)

Lake Powell and Lake Mead 5-Year Projected Conditions
Current Projections (updated August 2022)


Historical Data

Final Data Reports
Stream Flow Records

Historical Reservoir Levels (updated monthly)
Lake Mead
Lake Mohave
Lake Havasu

Lake Mead High/Low Elevation Graphs
Line graph with text data
Bar graph with text data

Historical Flow Below Hoover Dam (graphs)
Line graph


Ongoing Programs & Activities

Colorado River System Projections (CRMMS)

Colorado River Basin Drought Contingency Plan Agreements

Colorado River Basin Research-to-Operations (CRB R2O) Program

Pilot System Conservation Program

Colorado River Basin Water Supply & Demand Study

Colorado River Interim Guidelines for Lower Basin Shortages & Coordinated Operations for Lake Powell & Lake Mead

Colorado River Basin Natural Flow & Salt Data

SECURE Water Act Report to Congress

Warren H. Brock Reservoir Conservation Summary Report


Supply, Accounting, & Contracting

Water Supply
Weekly LC Water Supply Report

Water Accounting
Water Accounting Reports & Activities
Forecasted Water Use
Actual Water Use

Water Contracting
Water Entitlements & Contracts Information


Annual Operating Plans

AOP for the Upcoming Year
-NEW- DRAFT 2023 AOP - Fourth Consultation
-NEW- Presentation for the 2023 AOP - Fourth Consultation

AOP for the Current Year
2022 AOP

AOPs for Previous Years
Archives (1970 to present)


General Info & Links

Supporting Documents
Colorado River Documents 2008
Law of the River
Archived Documents

Lake Mead Information
Area & Capacity Tables (2011)
-NEW- Lake Mead Capacity Allocations (2022)
LIDAR Survey (2009)
Sedimentation Report (2001)
USGS Evaporation Study
Lake Mead and Lake Mohave Evaporation Sensitivity Study
Water Quality Monitoring

Recreational Information
Lake Mead National Recreation Area
Lake Mead Regional Weather Forecast
Boating Trail Guides: Davis Dam to Parker Dam - Blythe to Imperial Dam
Colorado River Tri-State Boating Safety Guide

Additional Links
River Miles Chart
Army Corps of Engineers Construction Guidelines
Bill Williams River Basin Real-Time Data
Gila River Basin Real-Time Data



For press or media inquiries, please contact Michelle Helms via e-mail at mhelms@usbr.gov or via phone at (702) 293-8189.

For additional questions or information regarding reservoir operations, please contact the Water Operations Control Center via e-mail at bcoowaterops@usbr.gov or via phone at (702) 293-8373.

Last Updated: 25-November-2022