Overview Realtime Historical Map View
Heat Advisory
2026-07-17T21:00:00-05:00

* WHAT...Heat index values up to 100 expected. * WHERE...Portions of northwest and west central Iowa, southwest Minnesota, northeast Nebraska, and central, east central, south central, and southeast South Dakota. * WHEN...From 1 PM this afternoon to 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Rock River Below Tom Creek At Rock Rapids, Ia Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011
01-01 577.67
01-02 602.0
01-03 492.75
01-04 587.0
01-05 525.0
01-06 518.0
01-07 480.0
01-08 522.67
01-09 579.33
01-10 564.67
01-11 535.67
01-12 540.0
01-13 540.67
01-14 466.67
01-15 424.67
01-16 433.33
01-17 453.33
01-18 493.5
01-19 452.5
01-20 438.0
01-21 427.5
01-22 447.5
01-23 601.0
01-24 522.0
01-25 658.0
01-26 664.0
01-27 623.0
01-28 629.0
01-29 623.0
01-30 618.0
01-31 517.0
02-01 442.0
02-02 425.0
02-03 618.0
02-04 493.0
02-05 456.0
02-06 456.0
02-07 434.0
02-08 404.0
02-09 384.0
02-10 376.0
02-11 380.0
02-12 392.0
02-13 376.0
02-24 92.7
02-25 95.6
02-26 105.0
02-27 66.5
02-28 74.5
02-29 66.0
03-01 676.33
03-02 557.67
03-03 697.67
03-04 581.0
03-05 513.67
03-06 446.25
03-07 577.0
03-08 843.67
03-09 871.0
03-10 774.33
03-11 641.0
03-12 417.8
03-13 391.66
03-14 376.34
03-15 394.21
03-16 974.32
03-17 1018.55
03-18 1147.53
03-19 1051.52
03-20 961.41
03-21 918.32
03-22 946.72
03-23 912.86
03-24 830.04
03-25 754.02
03-26 733.37
03-27 676.26
03-28 640.27
03-29 848.22
03-30 894.32
03-31 721.51
04-01 734.71
04-02 675.29
04-03 675.33
04-04 611.2
04-05 551.6
04-06 502.93
04-07 579.13
04-08 753.2
04-09 485.57
04-10 675.13
04-11 720.8
04-12 743.71
04-13 736.86
04-14 754.57
04-15 733.69
04-16 652.08
04-17 659.77
04-18 717.85
04-19 709.85
04-20 635.92
04-21 672.43
04-22 732.86
04-23 795.69
04-24 804.36
04-25 518.65
04-26 670.08
04-27 640.14
04-28 709.71
04-29 807.86
04-30 764.69
05-01 743.73
05-02 815.79
05-03 792.14
05-04 745.0
05-05 734.8
05-06 753.93
05-07 763.13
05-08 715.36
05-09 758.93
05-10 738.2
05-11 730.29
05-12 738.3
05-13 773.91
05-14 759.54
05-15 730.94
05-16 691.02
05-17 671.12
05-18 717.39
05-19 720.59
05-20 703.79
05-21 651.53
05-22 689.4
05-23 715.67
05-24 701.87
05-25 778.2
05-26 781.73
05-27 736.93
05-28 1102.33
05-29 1157.73
05-30 1088.73
05-31 1052.53
06-01 927.53
06-02 876.27
06-03 819.8
06-04 765.4
06-05 721.86
06-06 668.71
06-07 645.57
06-08 602.27
06-09 603.53
06-10 633.53
06-11 616.33
06-12 582.07
06-13 589.22
06-14 657.15
06-15 779.85
06-16 2109.11
06-17 2385.38
06-18 2019.57
06-19 1398.14
06-20 1120.09
06-21 1184.55
06-22 1853.29
06-23 1787.88
06-24 1524.73
06-25 1315.72
06-26 1407.8
06-27 1110.87
06-28 1024.41
06-29 895.71
06-30 770.32
07-01 760.43
07-02 816.23
07-03 785.76
07-04 719.26
07-05 680.65
07-06 857.11
07-07 1019.95
07-08 949.68
07-09 752.05
07-10 632.64
07-11 665.15
07-12 699.63
07-13 578.21
07-14 656.93
07-15 693.85
07-16 844.74
07-17 762.42
07-18 642.94
07-19 543.44
07-20 491.48
07-21 525.09
07-22 494.5
07-23 449.46
07-24 431.35
07-25 374.94
07-26 383.58
07-27 358.27
07-28 391.44
07-29 415.85
07-30 400.47
07-31 324.38
08-01 279.55
08-02 292.19
08-03 254.86
08-04 240.11
08-05 231.52
08-06 216.51
08-07 226.34
08-08 279.11
08-09 257.41
08-10 227.11
08-11 247.75
08-12 240.81
08-13 194.53
08-14 169.57
08-15 190.73
08-16 187.45
08-17 280.92
08-18 326.78
08-19 303.38
08-20 275.72
08-21 279.32
08-22 214.43
08-23 304.03
08-24 291.81
08-25 247.55
08-26 211.29
08-27 193.63
08-28 188.08
08-29 178.21
08-30 182.97
08-31 179.72
09-01 175.41
09-02 152.35
09-03 148.29
09-04 168.14
09-05 196.21
09-06 206.1
09-07 190.36
09-08 172.15
09-09 169.28
09-10 174.55
09-11 184.21
09-12 217.21
09-13 459.16
09-14 1288.99
09-15 671.16
09-16 491.68
09-17 485.98
09-18 358.34
09-19 294.51
09-20 331.25
09-21 709.86
09-22 670.65
09-23 581.61
09-24 461.14
09-25 361.21
09-26 370.22
09-27 373.72
09-28 340.69
09-29 305.39
09-30 296.65
10-01 200.69
10-02 207.19
10-03 261.14
10-04 380.93
10-05 508.61
10-06 571.84
10-07 588.36
10-08 593.79
10-09 541.42
10-10 541.84
10-11 588.64
10-12 576.51
10-13 504.04
10-14 440.7
10-15 441.78
10-16 285.34
10-17 370.91
10-18 353.83
10-19 338.51
10-20 239.94
10-21 241.65
10-22 339.15
10-23 370.75
10-24 364.8
10-25 346.71
10-26 339.03
10-27 323.56
10-28 317.31
10-29 323.66
10-30 331.89
10-31 319.43
11-01 304.63
11-02 296.46
11-03 286.3
11-04 280.01
11-05 217.32
11-06 237.24
11-07 239.12
11-08 232.97
11-09 224.21
11-10 229.63
11-11 217.06
11-12 222.16
11-13 243.43
11-14 300.53
11-15 289.4
11-16 282.3
11-17 298.84
11-18 264.94
11-19 280.04
11-20 296.58
11-21 405.8
11-22 387.17
11-23 378.78
11-24 359.46
11-25 395.5
11-26 361.7
11-27 374.61
11-28 344.61
11-29 482.11
11-30 500.21
12-01 497.06
12-02 468.23
12-03 428.5
12-04 429.7
12-05 483.79
12-06 394.53
12-07 408.16
12-08 523.73
12-09 567.54
12-10 565.27
12-11 589.73
12-12 653.28
12-13 651.1
12-14 521.32
12-15 490.96
12-16 403.98
12-17 549.5
12-18 525.75
12-19 461.75
12-20 443.0
12-21 450.67
12-22 446.5
12-23 449.75
12-24 464.25
12-25 452.0
12-26 459.0
12-27 473.33
12-28 584.0
12-29 446.5
12-30 486.67
12-31 603.33

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index