Lower Colorado River Operations
Data and information about our management of this natural resource.
(For more information and scheduling questions,
contact our Water Operations Control Center.)
Current ConditionsGeographic-based River and Reservoir Operations Reports - pages offering hourly and daily operations data by geographic location.
Hourly Elevations and Releases
Past 4 Days
Daily Reservoir Levels/Elevations
Mead, Mohave, Havasu
Archives of Past Months
Other Upper Basin Reservoirs
USGS Water Data - Real-time data from other gages on the Colorado River and its tributaries.
USGS WaterAlert - Service that sends messages about real-time gage data.
Water Supply & UsesWater Supply Report - updated weekly
Forecasted Water Use - 2014
Actual Water Use - 2014
Water Accounting and Use Reports - by calendar year for Arizona, California and Nevada
Water Entitlements/Contracts Information
7-Day Reservoir Outlook - updated daily
Weekly River Operations Schedule - updated weekly
Levels - updated monthly
Annual Operating Plans (AOPs)Draft 2015 AOP for Second Consultation
Annual Operating Plan Archives (1971 to present)
General Info and LinksThe Colorado River Documents 2008 - A book that discusses the Interior Secretary's management of the Colorado River from 1979 through 2008.
Law of the River - Legislation governing Colorado River operations and management.
Archived Reports - Documents related to river operations including the Colorado River Water Delivery Agreement, the Colorado River Storage & Interstate Release Agreement, etc are available here.
Evaporation from Lake Mead - A USGS report published in 2013 detailing the results of a 2-year evaporation study on Lake Mead, March 2010 through February 2012.
2009 Lake Mead Area and Capacity Tables - Contains updated data (based on a 2001 reservoir sedimentation survey and a 2009 LiDAR survey) for Lake Mead. The updated tables were put into use operationally in January 2012.
River Miles Chart - River mile distances for points along the Lower Colorado River from the southerly international boundary with Mexico.
Army Corps of Engineers Guidelines - Info on permits needed for construction along the lower Colorado River.
USGS Lower Colorado River Studies - Studies completed in cooperation with Reclamation to collect hydrologic data and develop methods to account for consumptive use of Colorado River water.
Colorado Basin River Forecast Center - National Weather Service info on water supply and snowpack for both the Upper and Lower Colorado River Basins.
Bill Williams River Basin Real-Time Data - Corps of Engineers info on flows and water supply along the Bill Williams River and at Alamo Dam.
Gila River Basin Real-Time Data - Corps of Engineers info on flows and water supply along the Gila River and at Painted Rock Dam.
Snow-Precipitation Update - Provides daily Snow-Precipitation updates for the Colorado River Basin above Lake Powell.
Lake Mead/Lake Mohave Air and Water Temperatures - Daily regional temperatures and precipitation - including water temperatures for Lakes Mead and Mohave - provided by the National Weather Service.
Lake Mead Water Quality Monitoring - Real-time water quality monitoring, air/water temperatures, etc. - provided by the US Geological Survey, in partnership with Reclamation, the National Park Service, and Southern Nevada Water Authority.
Colorado River Boating - Publications and information provided courtesy of the California Department of Boating and Waterways, Arizona Game and Fish Department, and Nevada Department of Wildlife.
Boating Trail Guide - Davis Dam to Parker Dam
Boating Trail Guide - Blythe to Imperial Dam
Colorado River Safe Boating Hints
Colorado River - Tri-State Boating Safety Guide
Tri-State Boating Safety Partners web site
Webmaster: Water Operations Control Center
Updated: Jul 2014