For photos, see our gallery

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ON THE COLORADO
Strategic reservoir elevations @ Hoover Dam intake towers
Glen Canyon Dam @ dead pool
Glen Canyon Dam @ minimum power pool
Lake Mead sediment storage according to pool
Lake Powell Inflow 1964 to 2009
Natural flow @ strategic USGS gages
World desalination capacity compared to Colorado River flow
Annual hydropower production of Colorado River
Colorado River sediment fill at Hite Marina, Lake Powell
Lake Powell delta: river mobilization of sediment amounts 2002-2004
Beetle stress on tamarisk along river corridor near Moab, Utah
100-year trend of Colorado River annual flow
Grand Canyon beach erosion from Glen Canyon Dam operations
Flow regime in Grand Canyon 1964-1965 (sediment scour event)
Rivers, dams, reservoirs & hydropower
Free-flowing river miles between dams
Evaporation Lakes Powell & Mead by second, minute, day and year.

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ARIZONA DEPARTMENT OF WATER RESOURCES
Shortage sharing in percent for lower basin

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BUREAU OF RECLAMATION
Temperature and Precipitation
CR basin temperatures 1895 - 2006
UB Precipitation 1895 - 2006
Temperature departures from 1895 - 2000 average
Inflow of Lake Powell: breakdown by tributary
Lake Powell Volume to Elevation Comparison
Reservoir physical and biochemical processes

Water Yield of Colorado River
Natural Flow @ Lee's Ferry
Basin Hydrology
Data of Natural Flow @ Lee's Ferry
Natural flow last 50 years
Upper basin depletion schedule

Lake Powell
Lake Glen Canyon Dam Important Elevations
Lake Powell inflow since 2000
Lake Powell tier elevations in feet above sea level
Lake Powell equalization tiers through 2026
Lake Powell Tiers in detail
Schematic of penstock section @ Glen Canyon Dam
Schematic of river outlets @ Glen Canyon Dam
Schematic of spillway Tunnel @ Glen Canyon Dam

Lake Mead
Hoover Dam Important Elevations
Lake Mead surplus trigger elevations
Lake Mead tier elevations in feet above sea level
Longitudinal profile of sediment storage
Shortage/surplus tiers @ Lake Mead

Lakes Powell and Mead
State of Colorado River System 1999 - 2008
State of Storage 1999-2009
Lake Mead & Powell operations: trigger elevations
April 2010 - State of the System

Basin State Allocations & Consumption
Pie Chart of seven state allocations
Upper basin depletion schedule
Colorado River Basin Historical Supply and Use

Lower Basin
Map: dams and diversions

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COLORADO DEPARTMENT OF NATURAL RESOURCES (archive)
Colorado River annual yield at Lee Ferry
Lake Powell inflow & release
Powell Storage
Salinity Chart
Lake Mead Storage
Hoover Flows

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COLORADO RIVER BOARD OF CALIFORNIA
Monthly total Colorado River Basin storage
MWD reservoir storage

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DROUGHT & PERSISTENT DRYING
1935 & 1956 PDSI. Woodhouse and Overpeck.
PDO and AMO influences on drough frequency. USGS.
20th century river flow with drought periods highlighted. USGS.
Global Indicators of Warming. Western Water Assessment.
Colorado Temperature Projections. Western Water Assessment.
Palmer Drought Severity Index for year 2006 to 2060. Western Water Assessment. Temperature departures from 1895 - 2000 average. Reclamation
UB Precipitation 1895 - 2006. Reclamation.
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MAPS
Colorado River Basin map. Pacific Institute.
Colorado River basin map. Wikipedia.
Colorado River basin map . Colorado Dept. Natural Resources.
Map: dams and diversions . Reclamation.
Geophysical Provinces of the Colorado Plateau. USGS.
Southern California Aqueduct System
Water service districts of California
Colorado River Map 01. National Geographic.
Colorado River Map 02. National Geographic.
The Plumbing System. High Country News.
San Juan River Basin.
Upper Colorado River Basin.

NATURAL RESOURCES CONSERVAION SERVICES
Snowpack GIS
Snowpack of western region
Snowpack of Colorado River Basin

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SOUTHERN NEVADA WATER AUTHORITY
Ten year average flow 2000 - 2009
Fact sheet of basin

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US GEOLOGICAL SURVEY
Colorado River basin fact sheet
Lake Mead dead pool sediment thickness (cache)
Colorado River flow trend @ Lee'sFerry
Lake Powell stratification profile and temperature
Lake Powell dissolved oxygen concentrations
1997 to 2008 power generation@ Glen Canyon Dam

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OTHER
Storage of Lakes Powell & Mead & combined
Lake Mead storaqe
Lee Ferry gage (annual water yield)
Colorado Basin Net Flow Balance. CADWES.
Upper Basin Consumptive Use. CADWES.
Pie chart of energy production USA
Percent Runoff Upper Colorado SubBasins. Western Water Assessment.
Percent Runoff Upper Colorado at elevation. WWA.
Temperatures at Phoenix Sky Harbor Airport. ASU.
Cross section of sediment accumulation at San Juan Arm (Lake Powell). Stevenson.
Western Colorado uranium mill sites. Denver Post.