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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 09426620 BILL WILLIAMS RIVER NEAR PARKER, AZ


La Paz County, Arizona
Hydrologic Unit Code 15030204
Latitude  34°15'40.45", Longitude 114°01'44.33" NAD83
Drainage area 5,337  square miles
Contributing drainage area 5,327  square miles
Gage datum 501.62 feet above NAVD88
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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 1988-10-01 -> 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 75 140 301 85 42 18 10 8.3 9.3 16 8.5 17
2 47 145 291 86 40 17 10 8.2 9.2 17 7.6 15
3 47 94 279 86 39 17 9.3 9.1 9.5 17 8.5 14
4 33 76 143 110 38 17 9 11 9.2 17 12 14
5 124 74 113 138 36 17 8.9 9.1 9.2 18 13 14
6 150 73 136 156 30 17 9.5 8.3 9.1 29 9.7 14
7 100 73 252 174 26 17 12 8.2 11 19 8.4 14
8 61 74 323 172 24 17 11 8.2 11 16 8.4 14
9 38 74 357 170 24 19 11 8.3 13 12 7.5 15
10 59 74 357 169 24 18 11 8.7 8.5 11 7.5 18
11 48 87 369 159 24 17 11 11 13 11 7.8 19
12 50 111 436 137 26 17 11 11 24 11 14 20
13 69 130 425 128 26 17 13 11 30 12 15 20
14 78 147 436 120 24 15 13 13 38 15 8.3 19
15 58 149 482 116 23 12 12 22 28 16 8 17
16 53 361 411 123 23 13 11 8.5 30 13 9.6 16
17 74 370 436 124 23 11 11 8.2 26 11 14 15
18 73 359 461 77 23 10 11 8.2 13 9.9 8.7 15
19 72 324 508 66 25 10 11 8.3 42 8.2 8.6 14
20 75 319 369 62 25 10 12 8.4 12 9.8 8.8 13
21 77 386 371 55 24 10 15 8.2 12 13 9 13
22 84 378 461 51 22 10 11 8.1 11 15 9.3 13
23 75 374 382 50 22 12 9.5 12 11 11 53 13
24 72 334 346 46 21 10 8.6 11 11 9.4 157 13
25 72 305 299 45 20 11 8.3 9.7 11 8.9 138 13
26 72 212 275 48 20 12 8.2 9.3 11 8.7 81 13
27 73 274 266 48 19 12 9.5 10 14 10 42 13
28 70 299 264 45 18 11 12 9.4 11 13 28 13
29 81 12 234 44 18 9.9 9.4 9.8 10 14 16 13
30 105   131 44 18 9.5 10 28 13 11 16 13
31 110   115   18   8.5 9.6   9.5   61