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Iowa River At Marengo, 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 4770.0
01-02 4376.67
01-03 4090.0
01-04 2966.0
01-05 2830.5
01-06 2660.5
01-07 2535.5
01-08 2718.0
01-09 3623.33
01-10 3553.33
01-11 3293.33
01-12 3136.67
01-13 2700.0
01-14 2583.33
01-15 2566.67
01-16 2636.67
01-17 2503.33
01-18 2850.0
01-19 2700.0
01-20 2870.0
01-21 3020.0
01-22 3030.0
01-23 3065.0
01-24 3155.0
01-25 3230.0
01-26 2500.0
01-27 2990.0
01-28 3610.0
01-29 3750.0
01-30 1943.0
01-31 1818.0
02-01 1808.0
02-02 1825.0
02-03 1933.5
02-04 1958.0
02-05 1742.0
02-06 1491.0
02-07 1456.5
02-08 1661.5
02-09 2650.0
02-10 2250.0
02-11 1950.0
02-12 2120.0
02-13 2630.0
02-14 3790.0
02-15 3850.0
02-16 2112.0
02-17 3930.0
02-26 5930.0
02-27 5540.0
02-28 5140.0
02-29 4790.0
03-01 2578.5
03-02 3755.67
03-03 3532.0
03-04 3338.33
03-05 2996.25
03-06 2789.6
03-07 2278.71
03-08 2373.14
03-09 2677.86
03-10 2726.43
03-11 2908.0
03-12 3407.4
03-13 3503.2
03-14 2357.8
03-15 3030.5
03-16 2689.92
03-17 2608.42
03-18 2462.62
03-19 2048.54
03-20 2903.62
03-21 3010.2
03-22 2555.36
03-23 2670.67
03-24 2589.8
03-25 2578.93
03-26 2548.33
03-27 2545.27
03-28 2503.33
03-29 2447.13
03-30 2385.07
03-31 2348.43
04-01 2417.13
04-02 2387.2
04-03 2334.47
04-04 2373.0
04-05 2543.6
04-06 2588.73
04-07 2603.6
04-08 2555.4
04-09 2419.57
04-10 2400.93
04-11 2617.33
04-12 2701.93
04-13 2618.14
04-14 2788.07
04-15 2766.08
04-16 2874.62
04-17 3133.85
04-18 3420.77
04-19 3804.62
04-20 3510.31
04-21 3437.86
04-22 3312.14
04-23 3183.57
04-24 3148.57
04-25 3043.85
04-26 3185.71
04-27 3069.29
04-28 2992.86
04-29 2945.71
04-30 2922.14
05-01 3101.53
05-02 2956.79
05-03 2927.14
05-04 3056.71
05-05 3342.0
05-06 3506.73
05-07 3424.13
05-08 3249.79
05-09 3309.4
05-10 3248.0
05-11 3351.33
05-12 3227.33
05-13 3020.0
05-14 2840.0
05-15 2894.29
05-16 2838.57
05-17 2827.14
05-18 2769.33
05-19 2988.67
05-20 3184.29
05-21 3259.33
05-22 3475.33
05-23 3546.67
05-24 3468.67
05-25 3566.67
05-26 3627.33
05-27 4094.67
05-28 4925.33
05-29 5186.67
05-30 6198.67
05-31 6054.8
06-01 5491.33
06-02 5278.67
06-03 4780.0
06-04 4377.33
06-05 4191.29
06-06 3953.64
06-07 3863.86
06-08 3731.07
06-09 3548.8
06-10 3558.2
06-11 4117.0
06-12 3850.64
06-13 3620.21
06-14 3482.64
06-15 3387.53
06-16 3110.57
06-17 3101.79
06-18 3479.2
06-19 3637.71
06-20 3807.36
06-21 3946.36
06-22 4098.79
06-23 4516.71
06-24 4395.93
06-25 5121.79
06-26 5304.0
06-27 5100.36
06-28 5170.64
06-29 5207.21
06-30 5013.36
07-01 5392.0
07-02 5570.69
07-03 5293.08
07-04 5182.31
07-05 5085.0
07-06 4723.07
07-07 4627.46
07-08 4407.92
07-09 4233.08
07-10 3807.0
07-11 3245.4
07-12 3010.33
07-13 3119.29
07-14 2773.93
07-15 2566.0
07-16 2391.79
07-17 2267.5
07-18 2110.5
07-19 1945.14
07-20 1995.86
07-21 2069.64
07-22 1965.5
07-23 1929.07
07-24 2023.23
07-25 2003.69
07-26 1966.93
07-27 1882.57
07-28 1811.36
07-29 2120.64
07-30 2305.79
07-31 2440.0
08-01 2381.25
08-02 2029.93
08-03 1897.43
08-04 1804.79
08-05 1772.86
08-06 1795.57
08-07 1746.0
08-08 1622.92
08-09 1505.77
08-10 1341.46
08-11 1498.07
08-12 1541.64
08-13 1650.0
08-14 1517.93
08-15 1344.43
08-16 1237.46
08-17 1135.46
08-18 984.58
08-19 936.85
08-20 903.31
08-21 971.85
08-22 1117.83
08-23 1300.31
08-24 1128.83
08-25 1095.92
08-26 1211.0
08-27 1045.07
08-28 967.14
08-29 942.93
08-30 989.92
08-31 1380.5
09-01 1301.0
09-02 1989.0
09-03 2471.38
09-04 2757.54
09-05 2586.54
09-06 2333.75
09-07 2235.69
09-08 1788.15
09-09 1879.71
09-10 1801.79
09-11 1868.71
09-12 1808.43
09-13 1754.64
09-14 1676.07
09-15 1574.14
09-16 1426.14
09-17 1390.71
09-18 1371.07
09-19 1348.86
09-20 1471.86
09-21 1470.86
09-22 1380.85
09-23 1547.23
09-24 1688.15
09-25 1569.29
09-26 1606.93
09-27 1590.93
09-28 1620.16
09-29 1662.71
09-30 1723.15
10-01 1276.87
10-02 1347.92
10-03 1763.44
10-04 1832.09
10-05 2471.03
10-06 2513.02
10-07 2439.29
10-08 2362.57
10-09 2377.25
10-10 2541.41
10-11 2549.17
10-12 2471.6
10-13 2158.4
10-14 2218.15
10-15 2509.0
10-16 1435.38
10-17 2046.29
10-18 1907.93
10-19 1904.23
10-20 1792.08
10-21 1205.91
10-22 1081.5
10-23 1051.23
10-24 1305.5
10-25 1577.77
10-26 1530.62
10-27 1524.31
10-28 1463.69
10-29 1494.92
10-30 1448.31
10-31 1302.29
11-01 1259.57
11-02 1193.92
11-03 1233.86
11-04 1217.86
11-05 1286.79
11-06 1189.15
11-07 1190.0
11-08 1182.38
11-09 1156.31
11-10 1124.15
11-11 1091.23
11-12 1100.77
11-13 1115.15
11-14 1127.36
11-15 1015.92
11-16 1066.57
11-17 1044.64
11-18 952.92
11-19 923.46
11-20 930.92
11-21 1020.62
11-22 1065.08
11-23 998.38
11-24 1018.25
11-25 1037.58
11-26 1138.0
11-27 1276.67
11-28 939.66
11-29 1371.17
11-30 1262.23
12-01 1253.62
12-02 1241.29
12-03 1291.79
12-04 1363.15
12-05 1402.42
12-06 1297.09
12-07 1581.67
12-08 1553.78
12-09 1338.8
12-10 1460.44
12-11 1406.44
12-12 1351.0
12-13 1162.89
12-14 891.13
12-15 992.86
12-16 1071.0
12-17 3063.17
12-18 3367.0
12-19 3939.17
12-20 1255.4
12-21 1926.0
12-22 4371.2
12-23 4071.2
12-24 4177.6
12-25 3579.4
12-26 3317.6
12-27 3124.8
12-28 3737.0
12-29 2454.33
12-30 3884.5
12-31 4896.67

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index