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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 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
1 170 468 380 495 390 377 465 570 459 167 79 120
2 156 355 389 488 390 384 472 590 473 162 80 128
3 154 326 381 472 384 392 480 585 497 158 79 145
4 151 304 390 467 385 394 480 515 507 192 79 154
5 148 285 393 473 388 398 486 483 440 229 79 215
6 149 270 401 484 389 401 498 491 441 241 80 215
7 152 255 410 505 392 407 483 502 413 226 79 206
8 148 242 443 486 395 412 486 502 505 247 83 193
9 154 265 456 491 393 415 490 522 423 241 96 191
10 228 298 463 468 390 423 499 520 393 236 91 188
11 222 329 470 459 392 429 511 519 367 191 106 186
12 203 312 474 460 395 431 491 504 364 195 133 181
13 277 293 464 451 394 428 494 524 346 188 124 181
14 276 293 462 455 396 431 494 506 321 263 104 201
15 268 322 464 459 394 437 532 501 297 445 95 189
16 281 296 468 459 392 443 515 544 283 273 89 188
17 369 306 477 454 386 442 518 528 277 217 92 185
18 471 293 475 450 388 444 510 496 273 178 88 183
19 710 297 469 449 385 448 603 494 266 160 85 285
20 1,250 333 469 447 384 449 543 498 250 150 101 476
21 952 459 472 442 382 447 498 513 244 149 81 442
22 680 446 480 444 382 448 534 549 241 145 86 392
23 430 454 494 430 379 454 509 550 237 134 106 434
24 354 441 497 405 377 454 482 512 222 125 117 428
25 304 425 504 396 375 458 477 501 211 113 116 370
26 289 415 497 392 376 463 510 495 209 99 113 320
27 321 399 499 388 378 462 533 461 216 89 148 286
28 343 395 497 389 376 462 548 484 201 84 102 340
29 510 459 511 388 373 469 540 480 197 80 110 318
30 598   517 391 374 469 567 484 175 78 111 248
31 609   508   375   544 459   80   181