Boulder Canyon Project - Hoover Dam Water Data


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Climatic Conditions

Annual Precipitation:

Temperature:

Real Time Weather Conditions - National Weather Service Station KLAS -- Las Vegas, Nevada
Recent Weather Data - Corps of Engineers - Los Angeles District

Water Supply

Colorado River

Drainage area above Hoover Dam¹	167,000 mi²
Annual discharge near Grand Canyon²:
Maximum - 1929³	19,850,000 acre-ft
Minimum - 1963	1,629,000 acre-ft
Average	11,270,000 acre-ft
Discharge near Grand Canyon:
Momentary maximum - 07/02/1927⁴	127,000 cfs
Momentary minimum - 12/28/1924	700 cfs
Average	15,570 cfs

1 137,800 square miles near Grand Canyon

2 Grand Canyon Station is located 267.2 mi upstream from Hoover Dam.

3 Recorded maximum. Estimated maximum of 25,200,000 acre-ft occurred in 1909.

4 Other estimated maximums are 300,000 cfs on 7/8/1884 and 220,000 cfs on 6/19/1921.

Real-Time Flows - USGS Station 09402500-- Colorado River near Grand Canyon, Arizona

Real Time Water Data

Real-Time Precipitation: - Graphs from Natural Resources Conservation Service SNOTEL Data --
Basins in Lower Colorado Region -

Streamflow Forecast Map - Western Climate Center - USDA

Snowpack Information - Western Climate Center - USDA

Current Reservoir Levels - Lower Colorado Regional Office

Hoover Dam - Actual Project Releases - Lower Colorado Regional Office

Lower Colorado River Water Accounting - Article V Decree Accounting Report

Water Quality Information - EPA - Surf Your Watershed

Drought Information

Palmer Drought Index Map: - Most recent map from Climate Prediction Center, NOAA
Explanation of Palmer Drought Severity Index (Text)
Third selection in list of Drought Indices from National Drought Mitigation Center