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USGS Surface-Water 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 09469500 GILA RIVER BELOW COOLIDGE DAM, AZ.


Pinal County, Arizona
Hydrologic Unit Code 15050100
Latitude  33°10'10", Longitude 110°31'50" NAD27
Drainage area 12,886  square miles
Gage datum 2,309.33 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 1898-10-01 -> 2024-09-30)

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
1 170 468 380 497 388 376 463 570 459 167 79 120
2 156 355 389 491 388 383 471 590 473 162 80 128
3 154 326 381 474 383 391 479 585 497 158 79 145
4 151 304 390 468 383 393 479 515 507 192 79 154
5 148 285 393 474 386 397 485 483 440 229 79 215
6 149 270 401 484 388 400 497 491 441 241 80 215
7 152 255 412 505 391 406 482 502 413 226 79 206
8 148 242 445 486 393 411 485 502 505 247 83 193
9 154 265 459 491 391 414 489 522 423 241 96 191
10 228 298 466 468 388 421 497 520 393 236 91 188
11 222 329 473 459 390 428 510 519 367 191 106 186
12 203 312 477 460 393 430 490 504 364 195 133 181
13 277 293 467 451 393 427 493 524 346 188 124 181
14 276 293 464 455 395 430 493 506 321 263 104 201
15 268 322 467 459 393 436 531 501 297 445 95 189
16 281 296 470 459 391 442 514 544 283 273 89 188
17 369 306 480 454 385 441 517 528 277 217 92 185
18 471 293 478 449 387 443 509 496 273 178 88 183
19 710 297 471 449 384 447 603 494 266 160 85 285
20 1,250 333 471 446 383 449 542 498 250 150 101 476
21 952 459 474 442 382 448 497 513 244 149 81 442
22 680 446 482 444 381 449 533 549 241 145 86 392
23 430 454 496 430 378 454 508 550 237 134 106 434
24 354 441 498 404 376 453 481 512 222 125 117 428
25 304 425 506 397 374 457 475 501 211 113 116 370
26 289 415 499 394 375 462 509 495 209 99 113 320
27 321 399 500 389 377 461 532 461 216 89 148 286
28 343 395 498 388 375 460 547 484 201 84 102 340
29 510 459 513 386 372 467 539 480 197 80 110 318
30 598   519 389 373 467 567 484 175 78 111 248
31 609   510   373   544 459   80   181