Overview Realtime Historical Map View
Air Quality Alert
None

* WHAT...Air Quality Advisory because of degraded air quality due to wildfire smoke. Air Quality Index is forecast to be Unhealthy. * WHERE...Ada, Canyon, Gem, Payette, and Washington Counties. * WHEN...UNTIL 3 PM MDT WEDNESDAY. * IMPACTS...Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.

Boise River At Caldwell Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019
01-01 551.17
01-02 560.0
01-03 549.0
01-04 559.5
01-05 580.0
01-06 575.33
01-07 567.0
01-08 598.0
01-09 575.8
01-10 566.17
01-11 563.2
01-12 557.17
01-13 561.83
01-14 550.0
01-15 559.83
01-16 548.33
01-17 550.2
01-18 545.2
01-19 540.17
01-20 545.83
01-21 534.33
01-22 554.17
01-23 528.25
01-24 549.67
01-25 559.5
01-26 559.17
01-27 588.83
01-28 560.33
01-29 558.67
01-30 558.71
01-31 559.14
02-01 547.86
02-02 544.83
02-03 578.86
02-04 617.43
02-05 604.43
02-06 574.4
02-07 578.14
02-08 550.83
02-09 562.57
02-10 550.0
02-11 507.4
02-12 535.33
02-13 535.17
02-14 532.5
02-15 543.71
02-16 546.0
02-17 572.5
02-18 579.0
02-19 571.57
02-20 580.57
02-21 538.0
02-22 560.17
02-23 563.71
02-24 527.0
02-25 640.67
02-26 594.5
02-27 597.86
02-28 577.86
02-29 532.5
03-01 569.43
03-02 566.29
03-03 563.86
03-04 562.86
03-05 560.57
03-06 586.0
03-07 572.86
03-08 574.57
03-09 567.57
03-10 544.14
03-11 545.43
03-12 768.25
03-13 787.0
03-14 769.38
03-15 823.25
03-16 854.88
03-17 831.5
03-18 830.0
03-19 798.13
03-20 817.0
03-21 852.38
03-22 1020.0
03-23 926.13
03-24 927.13
03-25 927.5
03-26 958.25
03-27 1012.38
03-28 1125.5
03-29 1239.0
03-30 1264.75
03-31 1283.0
04-01 1281.75
04-02 1233.63
04-03 1242.88
04-04 1338.75
04-05 1563.75
04-06 1595.13
04-07 1674.25
04-08 1702.38
04-09 1890.67
04-10 1925.43
04-11 1679.38
04-12 1487.57
04-13 1695.0
04-14 1909.29
04-15 1806.0
04-16 1852.0
04-17 1989.14
04-18 2095.86
04-19 2095.29
04-20 2148.43
04-21 2193.0
04-22 2298.71
04-23 2397.71
04-24 2354.14
04-25 2368.86
04-26 2373.14
04-27 2407.43
04-28 2420.14
04-29 2356.14
04-30 2289.57
05-01 2252.14
05-02 2368.29
05-03 2360.86
05-04 2357.71
05-05 2326.14
05-06 2306.86
05-07 2293.14
05-08 2568.67
05-09 2248.57
05-10 2315.29
05-11 2190.43
05-12 2141.71
05-13 2167.71
05-14 1589.0
05-15 2346.5
05-16 2276.83
05-17 2156.0
05-18 1990.43
05-19 2062.71
05-20 2320.33
05-21 2135.14
05-22 2007.0
05-23 2055.86
05-24 1989.71
05-25 1927.71
05-26 1946.57
05-27 1922.71
05-28 1920.57
05-29 1896.14
05-30 1900.0
05-31 1922.14
06-01 1819.43
06-02 1680.86
06-03 1620.0
06-04 1734.57
06-05 1979.17
06-06 1854.57
06-07 2074.33
06-08 1468.2
06-09 1746.43
06-10 1814.14
06-11 1855.71
06-12 1774.29
06-13 1776.14
06-14 1931.14
06-15 1800.86
06-16 1645.43
06-17 1475.86
06-18 1361.57
06-19 1314.43
06-20 1301.86
06-21 1309.43
06-22 1275.43
06-23 1137.71
06-24 1038.71
06-25 966.43
06-26 928.86
06-27 853.29
06-28 850.86
06-29 744.43
06-30 786.0
07-01 745.86
07-02 682.86
07-03 636.57
07-04 575.43
07-05 611.86
07-06 605.0
07-07 578.0
07-08 516.86
07-09 500.83
07-10 521.29
07-11 512.0
07-12 450.33
07-13 438.6
07-14 476.86
07-15 486.71
07-16 473.33
07-17 473.0
07-18 481.71
07-19 480.43
07-20 458.0
07-21 430.0
07-22 486.2
07-23 465.83
07-24 492.83
07-25 480.5
07-26 461.83
07-27 469.33
07-28 475.17
07-29 490.0
07-30 454.5
07-31 437.83
08-01 349.5
08-02 485.67
08-03 495.67
08-04 430.0
08-05 413.33
08-06 396.33
08-07 412.83
08-08 420.67
08-09 442.0
08-10 476.4
08-11 450.67
08-12 431.67
08-13 393.0
08-14 407.33
08-15 398.83
08-16 357.8
08-17 362.2
08-18 387.2
08-19 437.17
08-20 454.6
08-21 478.17
08-22 529.33
08-23 513.83
08-24 522.5
08-25 513.33
08-26 524.5
08-27 538.83
08-28 595.0
08-29 586.33
08-30 582.17
08-31 585.2
09-01 598.0
09-02 571.17
09-03 557.33
09-04 576.0
09-05 583.83
09-06 580.5
09-07 599.33
09-08 596.5
09-09 624.33
09-10 648.83
09-11 668.33
09-12 654.0
09-13 588.4
09-14 664.0
09-15 665.17
09-16 683.33
09-17 660.33
09-18 678.33
09-19 663.17
09-20 645.33
09-21 619.67
09-22 604.5
09-23 606.83
09-24 608.33
09-25 597.83
09-26 605.67
09-27 593.33
09-28 585.5
09-29 635.17
09-30 585.6
10-01 664.2
10-02 681.67
10-03 675.5
10-04 707.5
10-05 667.17
10-06 632.0
10-07 648.5
10-08 630.33
10-09 576.5
10-10 563.67
10-11 542.33
10-12 515.17
10-13 495.4
10-14 490.5
10-15 471.2
10-16 492.5
10-17 490.0
10-18 478.83
10-19 481.33
10-20 471.33
10-21 521.33
10-22 560.83
10-23 582.67
10-24 588.33
10-25 603.17
10-26 616.5
10-27 600.67
10-28 588.17
10-29 586.0
10-30 579.83
10-31 583.17
11-01 578.4
11-02 584.17
11-03 584.4
11-04 580.5
11-05 595.33
11-06 586.2
11-07 581.6
11-08 578.8
11-09 575.8
11-10 607.8
11-11 591.2
11-12 578.8
11-13 577.6
11-14 591.67
11-15 583.83
11-16 591.17
11-17 578.83
11-18 566.6
11-19 577.83
11-20 583.67
11-21 573.83
11-22 540.6
11-23 561.0
11-24 561.17
11-25 558.17
11-26 553.33
11-27 549.6
11-28 550.5
11-29 550.83
11-30 542.0
12-01 547.0
12-02 552.5
12-03 549.5
12-04 559.83
12-05 555.17
12-06 553.17
12-07 547.67
12-08 552.17
12-09 549.0
12-10 543.83
12-11 541.17
12-12 545.67
12-13 560.0
12-14 548.5
12-15 552.67
12-16 540.17
12-17 541.0
12-18 541.33
12-19 537.17
12-20 536.83
12-21 534.67
12-22 583.33
12-23 560.33
12-24 558.5
12-25 557.17
12-26 539.5
12-27 549.17
12-28 559.0
12-29 544.0
12-30 542.4
12-31 559.33

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index