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Robert B. Griffith Water Project - Main Page
Project Water Supply
Historic Conditions:
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Normal |
4.13 in |
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Maximum - 1965 |
7.96 in |
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Minimum - 1968 |
1.11 in |
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Las Vegas, Nevada 1961-1990 |
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Mean Annual |
66.7 °F |
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Daily Maximum - 07/11/1959 |
116 °F |
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Daily Minimum - 01/13/1963 |
8 °F |
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Las Vegas, Nevada 1949-1996 |
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Drainage area above Hoover Dam1 |
167,000 mi2 |
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Annual discharge near Grand Canyon2: |
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Average |
11,270,000 acre-ft |
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Maximum - 19293 |
19,850,000 acre-ft |
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Minimum - 1963 |
1,629,000 acre-ft |
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Discharge near Grand Canyon: |
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Momentary Maximum - 07/2/19274 |
127,000 ft3/s |
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Momentary Minimum - 12/28/24 |
700 ft3/s |
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Average |
15,570 ft3/s |
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1 137,800 mi2 near Grand Canyon. |
2 Grand Canyon Station is located 267.2 miles 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 ft3/s on July 8, 1884, and 220,000 ft3/s on July 19, 1921. |
Project Water Quality
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