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USGS Daily Statistics for Arizona

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Welcome to the NWIS-Web for the Arizona Water Science Center


The majority of USGS Gaging Stations are funded though a cooperative program between the USGS other interested agencies.
Follow this link for information on the Cooperative Water Program with the USGS.

Arizona Water Science Center Home Page
Colorado Basin River Forecast Center (CBRFC) - provided by the National Weather Service, AHPS. CBRFC on an interactive map.
Threatened and Endangered USGS Gaging Stations in Arizona
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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 09402500 COLORADO RIVER NEAR GRAND CANYON, AZ


Coconino County, Arizona
Hydrologic Unit Code 15010001
Latitude  36°06'05", Longitude 112°05'08" NAD27
Drainage area 141,600  square miles
Contributing drainage area 137,641  square miles
Gage datum 2,418.70 feet above NGVD29
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1922-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 9,900 10,700 10,800 12,900 19,900 30,200 24,900 15,200 13,000 11,000 10,100 9,680
2 9,340 10,600 10,700 12,900 19,900 30,800 24,400 14,800 12,300 10,200 10,300 10,400
3 10,500 10,600 10,900 13,000 20,000 31,200 23,700 14,600 11,800 10,000 10,300 10,400
4 11,000 10,500 11,000 12,900 20,500 31,500 22,900 14,500 11,600 10,000 10,300 10,400
5 11,000 10,300 11,100 12,700 20,900 31,400 21,500 14,400 11,600 9,780 10,300 10,600
6 10,800 10,400 11,200 13,300 21,600 31,800 21,500 14,500 11,700 10,200 10,400 10,600
7 10,700 10,400 10,900 13,500 22,500 31,700 21,400 14,800 11,600 10,300 10,500 10,700
8 10,500 10,300 10,800 13,900 23,200 31,400 21,000 14,900 11,600 10,100 10,600 10,600
9 10,700 10,300 10,800 14,100 23,800 31,300 20,400 14,800 11,600 9,860 10,400 10,500
10 10,600 10,700 10,600 14,200 23,900 31,400 19,900 14,800 11,600 9,820 10,300 10,600
11 10,600 10,800 10,600 14,700 24,400 31,400 19,500 14,600 12,000 9,880 10,600 10,800
12 10,600 10,600 10,700 15,200 24,900 31,400 19,100 14,500 11,900 9,830 11,000 10,900
13 10,700 10,600 10,900 15,200 25,000 31,600 18,600 14,600 11,900 9,780 10,800 10,800
14 10,500 10,500 11,100 15,300 25,400 31,600 18,300 14,500 12,000 10,400 10,900 10,700
15 10,300 10,600 11,200 15,400 25,600 31,500 17,900 14,200 11,900 10,800 10,700 10,500
16 10,400 10,600 11,300 15,500 25,900 31,100 17,500 13,900 11,500 10,800 10,400 10,500
17 10,400 10,900 11,200 15,700 26,300 31,100 17,200 14,000 11,400 10,700 10,100 10,400
18 10,600 10,800 11,200 16,000 26,900 31,000 16,900 13,900 11,500 10,300 10,100 10,400
19 11,000 10,800 11,000 16,400 27,200 30,600 16,600 13,900 12,000 10,100 10,200 10,500
20 10,900 10,700 11,100 16,800 27,300 30,100 16,300 13,700 11,700 9,870 10,500 10,400
21 11,000 10,900 11,100 17,200 27,400 29,500 15,900 13,600 11,500 9,950 10,900 10,400
22 10,700 10,900 11,000 17,400 27,600 29,100 15,800 13,500 11,400 10,000 10,900 10,500
23 10,700 10,900 11,300 17,600 27,900 28,900 15,700 13,500 11,300 10,400 10,600 10,300
24 10,500 10,900 11,600 18,300 28,400 28,700 15,500 13,700 11,300 10,400 10,100 10,100
25 10,700 10,800 11,600 19,200 28,800 28,200 15,200 13,600 11,300 10,200 10,000 9,600
26 10,500 10,800 11,800 19,800 28,800 27,500 15,100 13,300 11,400 10,000 9,780 8,370
27 10,500 10,800 12,200 20,000 29,000 27,000 15,000 13,200 11,200 9,780 9,720 9,390
28 10,600 10,700 12,400 19,800 29,000 26,200 14,700 13,400 11,300 9,800 9,870 10,300
29 10,500 10,400 12,600 19,900 29,300 25,800 14,700 13,400 11,100 9,720 9,470 10,300
30 10,700   12,900 19,900 29,700 25,300 15,100 13,300 11,100 9,670 9,650 10,400
31 10,700   12,900   29,800   15,200 13,200   9,900   10,300