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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

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 09519501 GILA R BLW GILLESPIE DAM, AZ (LOW-FLOW STATION)


Maricopa County, Arizona
Hydrologic Unit Code 15070101
Latitude  33°13'45", Longitude 112°46'00" NAD27
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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 1992-10-01 -> 2020-09-30)

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
1 168 1,000 1,740 742 399 27 4.7 13 15 40 52 102
2 483 1,010 1,610 822 375 23 6.2 11 15 40 54 96
3 565 931 1,740 698 346 18 8.1 8.4 16 41 57 92
4 604 849 1,940 641 310 19 8.2 5.3 14 41 56 106
5 704 687 1,810 648 280 19 6 5.9 11 42 53 101
6 905 694 1,920 658 242 17 4 8.5 14 45 52 101
7 1,120 814 3,290 618 121 18 4.8 11 17 62 57 101
8 1,520 871 2,540 600 95 17 6.8 9.5 25 56 55 117
9 6,700 1,130 2,230 624 218 18 10 9.4 110 49 50 115
10 3,200 1,610 1,550 635 261 19 8.3 8.6 113 43 44 124
11 3,900 1,600 1,420 488 344 15 12 28 73 38 41 125
12 3,380 1,590 1,280 423 307 14 10 21 50 36 41 111
13 3,110 1,080 1,170 383 254 8.9 9 13 38 38 44 105
14 3,330 1,090 1,270 570 265 5.3 9.1 9.5 27 42 45 100
15 3,310 1,570 1,230 564 285 6.3 17 8.7 24 59 47 103
16 4,050 3,610 1,240 439 279 5.8 9.8 9.9 31 47 87 90
17 3,800 2,410 1,280 302 304 6.6 12 9.1 22 45 79 97
18 4,550 1,770 1,290 261 229 11 12 6.3 19 50 77 100
19 4,310 1,450 1,190 240 59 12 18 8.3 17 51 68 97
20 3,570 2,250 1,230 228 35 12 15 17 17 58 64 95
21 4,320 3,590 1,190 195 29 12 11 20 23 54 60 96
22 4,250 3,040 1,140 183 30 11 7.1 23 24 48 67 99
23 3,380 2,790 1,170 184 22 7.8 5.8 44 21 52 70 124
24 2,990 2,440 1,090 177 22 7 6.1 22 23 52 69 138
25 2,510 1,970 907 155 26 5.6 6.9 12 29 49 70 138
26 1,950 1,870 851 134 127 8.3 23 12 29 50 75 123
27 1,400 1,680 869 117 182 7.2 9.1 14 31 61 81 97
28 1,150 1,700 906 107 179 6.5 7.4 22 27 56 82 105
29 968 285 766 263 133 5 11 38 40 49 88 105
30 882   674 307 48 4.1 13 48 30 50 95 121
31 887   653   32   15 21   51   124