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USGS 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 13185000 BOISE RIVER NR TWIN SPRINGS ID


Boise County, Idaho
Hydrologic Unit Code 17050112
Latitude  43°40'05", Longitude 115°43'31" NAD83
Drainage area 832  square miles
Gage datum 3,274.96 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 1910-10-01 -> 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
1 504 474 607 1,350 2,920 3,900 2,000 598 371 371 413 471
2 509 489 611 1,380 2,980 3,850 1,940 581 370 374 413 487
3 477 483 625 1,430 3,070 3,870 1,860 564 366 376 414 501
4 453 496 628 1,470 3,170 3,900 1,790 551 364 379 423 474
5 447 491 634 1,550 3,260 3,940 1,700 534 362 377 425 457
6 447 484 648 1,640 3,350 3,890 1,640 521 363 374 419 450
7 442 498 659 1,700 3,480 3,880 1,590 508 365 375 425 442
8 443 503 679 1,770 3,520 3,850 1,520 498 367 377 432 433
9 439 515 691 1,840 3,540 3,770 1,460 487 371 377 439 421
10 438 541 742 1,850 3,540 3,620 1,390 480 367 380 447 426
11 435 517 788 1,880 3,540 3,520 1,320 475 365 387 435 459
12 423 512 797 1,950 3,570 3,470 1,240 465 368 391 442 480
13 430 510 812 2,030 3,640 3,470 1,180 460 364 386 441 481
14 445 514 831 2,150 3,760 3,370 1,140 452 363 383 437 471
15 451 513 842 2,200 3,930 3,290 1,080 445 366 386 433 483
16 463 521 900 2,210 3,990 3,260 1,030 441 364 389 436 467
17 485 533 932 2,290 4,060 3,190 987 431 365 389 440 440
18 474 533 945 2,370 4,060 3,110 941 429 366 381 448 423
19 467 547 981 2,440 4,120 3,060 899 426 367 384 459 426
20 458 553 1,030 2,530 4,080 2,970 864 423 371 388 465 445
21 474 567 1,040 2,620 4,060 2,900 829 417 370 383 473 450
22 476 577 1,080 2,670 3,990 2,830 796 410 363 387 460 529
23 473 577 1,130 2,760 4,000 2,750 775 413 360 400 457 644
24 473 585 1,150 2,820 4,020 2,650 751 406 359 404 472 536
25 461 586 1,140 2,790 4,050 2,550 728 398 358 409 487 475
26 452 584 1,170 2,790 4,090 2,490 703 393 361 407 468 462
27 451 586 1,200 2,840 4,060 2,390 680 388 361 404 452 467
28 443 599 1,220 2,890 4,060 2,290 658 381 358 404 440 479
29 437 650 1,230 2,860 4,070 2,210 640 377 361 410 428 486
30 446   1,250 2,870 4,020 2,120 629 375 369 408 445 475
31 458   1,300   3,970   614 373   414   471