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USGS Surface-Water Daily Statistics for Idaho

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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 13190500 SF BOISE RIVER AT ANDERSON RANCH DAM ID


Elmore County, Idaho
Hydrologic Unit Code 17050113
Latitude  43°20'37", Longitude 115°28'39" NAD83
Drainage area 978  square miles
Gage datum 3,833.07 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 1942-10-01 -> 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
1 397 532 556 726 1,490 2,530 1,790 1,290 848 449 339 409
2 442 504 503 775 1,490 2,480 1,790 1,260 816 455 348 434
3 460 489 536 798 1,540 2,420 1,750 1,260 783 444 356 435
4 455 494 550 807 1,600 2,380 1,690 1,260 743 437 355 433
5 466 514 538 810 1,670 2,440 1,680 1,240 693 444 352 445
6 447 511 528 820 1,710 2,450 1,640 1,230 687 447 348 440
7 450 502 525 822 1,750 2,400 1,600 1,230 657 446 360 444
8 459 518 512 898 1,810 2,390 1,610 1,220 692 445 358 467
9 456 495 502 952 1,890 2,430 1,580 1,220 705 447 352 468
10 457 487 555 942 1,900 2,370 1,570 1,200 674 452 343 449
11 462 489 585 978 1,950 2,340 1,550 1,220 668 422 326 448
12 467 512 586 1,010 1,990 2,320 1,510 1,220 660 421 342 473
13 449 508 604 1,040 2,010 2,300 1,520 1,230 644 402 357 474
14 465 508 635 1,080 1,980 2,260 1,500 1,220 650 353 387 460
15 465 503 639 1,140 1,940 2,110 1,480 1,200 648 327 386 469
16 469 472 622 1,210 1,920 2,120 1,480 1,170 553 314 383 468
17 463 475 638 1,260 1,940 2,070 1,460 1,150 550 297 386 454
18 487 514 642 1,300 1,970 2,070 1,430 1,130 514 285 379 459
19 493 539 639 1,340 2,020 2,060 1,410 1,120 521 294 389 474
20 500 522 656 1,320 2,150 2,110 1,440 1,060 502 287 391 480
21 501 526 656 1,330 2,200 2,090 1,440 1,060 501 289 420 475
22 502 547 619 1,340 2,260 2,100 1,420 1,030 493 297 394 482
23 506 533 587 1,310 2,320 2,060 1,430 1,020 472 307 397 470
24 492 536 614 1,390 2,400 2,010 1,440 1,000 471 312 381 448
25 510 561 628 1,440 2,460 1,990 1,450 972 463 315 408 401
26 503 570 635 1,460 2,500 1,970 1,420 956 461 307 405 446
27 512 559 653 1,470 2,520 1,950 1,410 935 476 317 401 471
28 529 551 647 1,500 2,520 1,890 1,370 907 473 323 398 469
29 516 560 643 1,530 2,510 1,840 1,360 891 477 315 412 468
30 519   624 1,530 2,520 1,780 1,360 888 478 312 423 467
31 505   645   2,520   1,350 872   339   471