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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
1 506 476 605 1,350 2,910 3,890 2,000 598 371 371 413 471
2 510 491 608 1,380 2,970 3,840 1,940 581 370 374 413 487
3 476 485 621 1,430 3,060 3,870 1,860 564 366 376 414 501
4 450 496 625 1,470 3,150 3,910 1,790 551 364 379 423 474
5 445 490 631 1,550 3,240 3,950 1,700 534 362 377 425 457
6 446 484 646 1,640 3,340 3,900 1,640 521 363 374 419 450
7 442 498 657 1,700 3,470 3,890 1,590 508 365 375 425 442
8 443 503 678 1,760 3,510 3,860 1,520 498 367 377 432 433
9 440 516 690 1,840 3,530 3,780 1,460 487 371 377 439 421
10 439 542 740 1,850 3,520 3,630 1,390 480 367 380 447 428
11 435 519 786 1,870 3,520 3,520 1,320 475 365 387 435 461
12 423 514 795 1,940 3,550 3,480 1,240 465 368 391 442 481
13 430 512 809 2,020 3,630 3,480 1,180 460 364 386 441 482
14 446 515 830 2,150 3,760 3,380 1,140 452 363 383 437 472
15 452 514 842 2,190 3,940 3,300 1,080 445 366 386 433 484
16 465 522 900 2,200 4,000 3,270 1,030 441 364 389 436 468
17 487 534 933 2,280 4,070 3,190 987 431 365 389 440 441
18 476 534 945 2,370 4,080 3,110 941 429 366 381 448 424
19 468 548 983 2,440 4,130 3,060 899 426 367 384 459 427
20 460 555 1,030 2,530 4,100 2,970 864 423 371 388 465 446
21 476 569 1,040 2,620 4,080 2,900 829 417 370 383 473 451
22 477 578 1,080 2,670 4,010 2,830 796 410 363 387 460 531
23 474 578 1,140 2,760 4,010 2,750 775 413 360 400 457 646
24 475 581 1,150 2,820 4,040 2,650 751 406 359 404 472 537
25 463 580 1,140 2,790 4,060 2,550 728 398 358 409 487 476
26 454 580 1,160 2,790 4,090 2,490 703 393 361 407 468 462
27 453 583 1,190 2,830 4,060 2,390 680 388 361 404 452 468
28 445 596 1,200 2,880 4,060 2,290 658 381 358 404 440 480
29 439 650 1,220 2,850 4,070 2,210 640 377 361 410 428 487
30 447   1,250 2,860 4,020 2,120 629 375 369 408 445 475
31 459   1,300   3,960   614 373   414   472