Overview Realtime Historical Map View
Flood Warning
2026-10-02T10:45:00-05:00

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Grundy County in central Iowa... Northern Tama County in central Iowa... Southeastern Butler County in north central Iowa... Black Hawk County in northeastern Iowa... * WHEN...Until 1045 AM CDT. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Several structures are flooded and numerous roads remain closed due to flooding. * ADDITIONAL DETAILS... - At 554 AM CDT, flooding is ongoing across the warned area. - Flooding impacts will continue, but there will be no additional rain today. - Some locations that will experience flooding include... Waterloo, Cedar Falls, Grundy Center, Evansdale, Hudson, Reinbeck, Dike, Elk Run Heights, Uni-Dome And McLeod Center, Waterloo Municipal Airport, Crossroads Mall, Washburn, Dunkerton, Raymond, Wellsburg, New Hartford, Holland, Stout and Morrison. - This includes Interstate 380 between mile markers 65 and 73.

Cedar River At Waterloo, 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 6147.8
01-02 5602.0
01-03 4819.2
01-04 4361.2
01-05 4968.0
01-06 4735.5
01-07 4405.5
01-08 4412.75
01-09 4143.0
01-10 3518.6
01-11 2936.4
01-12 2812.6
01-13 2568.4
01-14 2880.0
01-15 3038.6
01-16 3077.8
01-17 2625.4
01-18 2305.0
01-19 2127.5
01-20 1823.75
01-21 2264.33
01-22 2504.33
01-23 2607.67
01-24 2330.5
01-25 2152.0
01-26 1354.0
01-27 2151.5
01-28 2392.33
01-29 2599.67
01-30 2144.25
01-31 1777.75
02-01 2294.25
02-02 2233.75
02-03 2064.0
02-04 2462.0
02-05 3674.0
02-06 4269.33
02-07 3122.25
02-08 2638.0
02-09 2263.0
02-10 1860.75
02-11 2040.75
02-12 2040.75
02-13 2227.0
02-14 2111.0
02-15 2053.0
02-16 1959.0
02-17 1869.5
02-18 1849.0
02-19 1337.0
02-20 2266.75
02-21 2888.25
02-22 3483.5
02-23 3570.5
02-24 3641.25
02-25 3822.5
02-26 4888.67
02-27 4478.67
02-28 3328.25
02-29 9660.0
03-01 3641.0
03-02 3744.0
03-03 6154.5
03-04 5469.83
03-05 4760.29
03-06 4855.25
03-07 4371.67
03-08 4634.8
03-09 4706.1
03-10 5113.7
03-11 6130.9
03-12 6666.91
03-13 6690.09
03-14 6296.0
03-15 7150.92
03-16 9080.15
03-17 9506.77
03-18 9305.62
03-19 8615.29
03-20 7541.08
03-21 7970.0
03-22 6554.0
03-23 7514.36
03-24 7235.29
03-25 7006.0
03-26 6580.14
03-27 6219.29
03-28 6089.29
03-29 6160.71
03-30 6457.14
03-31 6327.69
04-01 6794.29
04-02 7093.57
04-03 7306.43
04-04 7332.86
04-05 7217.86
04-06 7377.14
04-07 7180.0
04-08 6669.29
04-09 5968.46
04-10 5780.0
04-11 5753.57
04-12 6188.46
04-13 6472.31
04-14 6603.08
04-15 7133.33
04-16 7920.83
04-17 8855.83
04-18 8439.17
04-19 7520.83
04-20 7129.17
04-21 7079.23
04-22 7614.62
04-23 8062.31
04-24 8201.54
04-25 7173.85
04-26 7930.0
04-27 7636.43
04-28 7114.29
04-29 6733.57
04-30 6774.29
05-01 7532.67
05-02 7023.85
05-03 7199.23
05-04 7580.77
05-05 8156.43
05-06 8713.57
05-07 9052.14
05-08 8504.62
05-09 8035.71
05-10 7759.29
05-11 7282.86
05-12 6888.57
05-13 6637.14
05-14 6840.77
05-15 7023.85
05-16 7013.08
05-17 7083.85
05-18 6829.29
05-19 7063.57
05-20 7548.46
05-21 7696.43
05-22 8089.29
05-23 9162.0
05-24 8555.33
05-25 7846.67
05-26 7854.67
05-27 8222.67
05-28 9162.67
05-29 9826.67
05-30 10555.33
05-31 11694.0
06-01 10620.67
06-02 9112.67
06-03 8073.33
06-04 7608.0
06-05 7335.71
06-06 7262.14
06-07 7202.86
06-08 6438.67
06-09 5955.0
06-10 6463.57
06-11 7271.43
06-12 9344.62
06-13 9140.77
06-14 8285.38
06-15 8025.71
06-16 8269.29
06-17 7728.0
06-18 8013.33
06-19 7563.57
06-20 8007.86
06-21 9154.29
06-22 10715.0
06-23 12145.71
06-24 12520.71
06-25 12560.0
06-26 12996.43
06-27 12140.0
06-28 10604.29
06-29 10218.57
06-30 9868.57
07-01 9941.43
07-02 10455.71
07-03 9504.29
07-04 8544.29
07-05 7482.67
07-06 7113.33
07-07 6748.57
07-08 6400.86
07-09 6153.71
07-10 5905.67
07-11 5871.4
07-12 6400.0
07-13 6576.23
07-14 5816.36
07-15 5059.57
07-16 4580.71
07-17 4493.27
07-18 4220.21
07-19 4375.21
07-20 4791.14
07-21 5027.86
07-22 4996.43
07-23 5102.14
07-24 5186.43
07-25 4844.29
07-26 4993.07
07-27 5291.21
07-28 5254.79
07-29 4687.14
07-30 4467.14
07-31 4699.64
08-01 5190.42
08-02 4756.53
08-03 4302.87
08-04 3782.67
08-05 3450.33
08-06 3392.07
08-07 3354.8
08-08 3416.0
08-09 3455.46
08-10 3398.0
08-11 3180.93
08-12 3097.21
08-13 3162.14
08-14 3183.93
08-15 3115.36
08-16 2899.57
08-17 2721.5
08-18 2614.54
08-19 2501.14
08-20 2907.36
08-21 3490.36
08-22 4109.77
08-23 3933.71
08-24 3098.69
08-25 2815.46
08-26 3459.21
08-27 3838.29
08-28 4146.36
08-29 3749.47
08-30 4338.67
08-31 5885.38
09-01 5501.86
09-02 4723.14
09-03 4518.79
09-04 4827.14
09-05 4662.71
09-06 4708.38
09-07 5485.43
09-08 5583.77
09-09 5223.43
09-10 4784.07
09-11 4483.86
09-12 4531.5
09-13 4201.79
09-14 3745.21
09-15 3774.0
09-16 3878.79
09-17 3520.57
09-18 3539.57
09-19 3737.07
09-20 4226.43
09-21 5290.62
09-22 7671.58
09-23 8619.92
09-24 11062.36
09-25 11461.0
09-26 9983.5
09-27 8057.27
09-28 6959.14
09-29 5845.0
09-30 5284.38
10-01 4143.33
10-02 4379.08
10-03 3453.17
10-04 3668.75
10-05 5155.31
10-06 4948.0
10-07 4831.54
10-08 5020.23
10-09 5290.62
10-10 5603.0
10-11 5982.85
10-12 6254.77
10-13 6157.08
10-14 5650.46
10-15 5247.33
10-16 3102.0
10-17 4043.46
10-18 3848.0
10-19 3612.69
10-20 3422.54
10-21 2596.09
10-22 3218.31
10-23 3513.38
10-24 3674.77
10-25 3716.85
10-26 3559.77
10-27 3529.62
10-28 3724.0
10-29 3970.31
10-30 4161.46
10-31 3924.0
11-01 3592.77
11-02 3425.58
11-03 3143.62
11-04 3023.31
11-05 3097.33
11-06 3055.0
11-07 2962.58
11-08 2951.25
11-09 2901.58
11-10 2751.83
11-11 2671.0
11-12 2650.08
11-13 2723.08
11-14 2803.0
11-15 2721.85
11-16 2697.62
11-17 2616.38
11-18 2463.25
11-19 2430.17
11-20 2410.33
11-21 2534.62
11-22 2630.25
11-23 2584.08
11-24 2781.5
11-25 2761.25
11-26 2658.54
11-27 2716.77
11-28 2445.83
11-29 2817.69
11-30 2861.92
12-01 2760.92
12-02 2878.08
12-03 3053.23
12-04 3063.77
12-05 3055.08
12-06 2663.73
12-07 2966.45
12-08 2904.5
12-09 2827.8
12-10 2870.6
12-11 2792.1
12-12 2622.3
12-13 2324.0
12-14 2047.38
12-15 2038.63
12-16 2113.0
12-17 4667.75
12-18 4589.38
12-19 4704.57
12-20 2176.17
12-21 2123.17
12-22 3596.57
12-23 3725.0
12-24 3767.5
12-25 3429.57
12-26 3423.14
12-27 3329.29
12-28 3703.43
12-29 3805.83
12-30 5379.5
12-31 7630.5

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index