Overview Realtime Historical Map View
Flood Warning
2026-10-03T22:00:00-05:00

...The Flood Warning is extended for the following rivers in Iowa... Nishnabotna River Above Hamburg affecting Fremont County. .This update reflect a slight increase in the forecasted river stage. * WHAT...Minor flooding is forecast. * WHERE...Nishnabotna River above Hamburg. * WHEN...From early this morning to Saturday evening. * IMPACTS...At 25.0 feet, More extensive lowland flooding begins as the parking lot near the gauge begins to experience flooding. In addition, some local farm levees may be overtopped with flood waters. * ADDITIONAL DETAILS... - At 1:00 AM CDT Friday the stage was 19.4 feet. - Bankfull stage is 23.0 feet. - Forecast...The river is expected to rise to a crest of 24.2 feet this evening. - Flood stage is 25.0 feet. - Flood History...This crest compares to a previous crest of 24.2 feet on 03/18/1969. - http://www.weather.gov/safety/flood

Nishnabotna River Above Hamburg, 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 1640.11
01-02 1691.88
01-03 1482.78
01-04 1478.56
01-05 1456.67
01-06 1362.33
01-07 1489.56
01-08 1504.78
01-09 1548.78
01-10 1547.11
01-11 1626.38
01-12 1707.38
01-13 1711.88
01-14 1821.75
01-15 2083.0
01-16 1802.25
01-17 1591.0
01-18 1316.57
01-19 1580.86
01-20 1884.83
01-21 2152.71
01-22 2122.86
01-23 2478.83
01-24 2029.86
01-25 2012.43
01-26 1098.83
01-27 1151.5
01-28 1520.57
01-29 1542.14
01-30 1581.83
01-31 1596.83
02-01 1642.5
02-02 1742.33
02-03 1904.17
02-04 2175.6
02-05 2135.4
02-06 1836.0
02-07 1495.17
02-08 1327.43
02-09 1342.86
02-10 1345.57
02-11 1308.86
02-12 1327.43
02-13 1301.71
02-14 1180.71
02-15 1037.33
02-16 1272.0
02-17 1415.5
02-18 1299.17
02-19 1449.5
02-20 1867.83
02-21 2560.17
02-22 1897.17
02-23 1706.5
02-24 1569.17
02-25 1513.83
02-26 1490.0
02-27 1294.43
02-28 1801.86
02-29 1966.0
03-01 2145.57
03-02 1507.14
03-03 1355.14
03-04 1241.86
03-05 1101.33
03-06 1184.2
03-07 1151.0
03-08 1117.2
03-09 1161.4
03-10 1148.2
03-11 1195.64
03-12 1212.36
03-13 1177.45
03-14 3318.92
03-15 3485.58
03-16 4002.33
03-17 3530.0
03-18 2848.92
03-19 2531.07
03-20 2447.14
03-21 2129.8
03-22 1790.93
03-23 1827.4
03-24 1762.4
03-25 1747.53
03-26 1671.0
03-27 1644.0
03-28 1529.87
03-29 1473.27
03-30 1512.73
03-31 1716.0
04-01 1641.27
04-02 1513.2
04-03 1473.13
04-04 1426.67
04-05 1413.2
04-06 1411.0
04-07 1363.8
04-08 1358.73
04-09 1248.07
04-10 1302.8
04-11 1319.87
04-12 1502.86
04-13 1463.71
04-14 1450.86
04-15 1905.38
04-16 2458.85
04-17 1995.92
04-18 1800.67
04-19 1777.08
04-20 1912.54
04-21 1985.57
04-22 1889.21
04-23 1822.86
04-24 1734.71
04-25 1802.38
04-26 1784.86
04-27 1745.36
04-28 2018.36
04-29 2066.14
04-30 1804.23
05-01 2241.0
05-02 2414.5
05-03 2241.71
05-04 2788.07
05-05 2875.93
05-06 2640.0
05-07 2394.67
05-08 2431.43
05-09 2499.07
05-10 2747.0
05-11 3491.07
05-12 3343.8
05-13 3344.53
05-14 2666.43
05-15 2616.33
05-16 2665.46
05-17 2630.15
05-18 3116.79
05-19 3116.36
05-20 3150.69
05-21 3368.29
05-22 3137.79
05-23 2820.43
05-24 2915.36
05-25 3580.64
05-26 3469.33
05-27 4352.87
05-28 4406.73
05-29 4777.36
05-30 4636.21
05-31 4350.36
06-01 3704.64
06-02 3312.21
06-03 3167.86
06-04 3174.0
06-05 4273.71
06-06 3508.5
06-07 3253.62
06-08 3139.57
06-09 3053.07
06-10 2962.5
06-11 2862.64
06-12 4001.0
06-13 3222.23
06-14 2826.85
06-15 3377.79
06-16 3725.0
06-17 3997.29
06-18 3441.86
06-19 2852.38
06-20 2992.85
06-21 3023.46
06-22 3008.08
06-23 2675.77
06-24 2637.62
06-25 2569.08
06-26 3290.38
06-27 3266.38
06-28 3175.62
06-29 3079.08
06-30 2736.62
07-01 2551.38
07-02 3899.23
07-03 2856.69
07-04 2465.54
07-05 2416.14
07-06 3246.71
07-07 2672.69
07-08 2243.23
07-09 2120.77
07-10 2110.62
07-11 2035.23
07-12 2024.42
07-13 2185.54
07-14 2031.5
07-15 1856.14
07-16 1733.36
07-17 1815.36
07-18 1690.71
07-19 2589.57
07-20 1806.79
07-21 1662.64
07-22 1552.57
07-23 1494.29
07-24 1493.71
07-25 1449.07
07-26 1404.86
07-27 1377.21
07-28 1335.57
07-29 1450.57
07-30 1231.77
07-31 1332.57
08-01 1260.25
08-02 1289.15
08-03 1225.86
08-04 1290.14
08-05 1224.5
08-06 1187.64
08-07 1161.86
08-08 1089.31
08-09 1247.08
08-10 1128.85
08-11 1533.57
08-12 1471.79
08-13 1606.5
08-14 1245.36
08-15 1174.93
08-16 1187.62
08-17 1224.0
08-18 1058.58
08-19 971.92
08-20 991.38
08-21 2094.08
08-22 1538.75
08-23 1755.64
08-24 1681.54
08-25 1376.92
08-26 1263.14
08-27 1178.79
08-28 1439.29
08-29 2063.21
08-30 2010.93
08-31 1835.69
09-01 1617.0
09-02 1704.79
09-03 2047.71
09-04 1741.71
09-05 1439.5
09-06 1875.85
09-07 1675.0
09-08 1728.38
09-09 1610.71
09-10 1374.0
09-11 2756.71
09-12 2091.86
09-13 1625.57
09-14 1685.79
09-15 1497.71
09-16 1483.93
09-17 3204.57
09-18 2346.14
09-19 2034.0
09-20 1782.0
09-21 1768.14
09-22 1801.92
09-23 1755.5
09-24 2069.79
09-25 2002.14
09-26 2513.29
09-27 2286.0
09-28 2082.93
09-29 1847.29
09-30 1968.92
10-01 2172.08
10-02 3427.77
10-03 3134.67
10-04 2310.92
10-05 2137.36
10-06 2616.79
10-07 2581.79
10-08 2661.29
10-09 2886.21
10-10 3115.36
10-11 2675.64
10-12 2770.36
10-13 2332.0
10-14 2104.07
10-15 2308.31
10-16 1823.31
10-17 1850.43
10-18 1714.07
10-19 1617.36
10-20 1401.54
10-21 1441.92
10-22 1433.71
10-23 1399.64
10-24 1449.64
10-25 1532.0
10-26 1447.64
10-27 1372.07
10-28 1334.57
10-29 1334.5
10-30 1298.71
10-31 1301.29
11-01 1290.64
11-02 1198.46
11-03 1225.14
11-04 1213.07
11-05 1198.5
11-06 1087.54
11-07 1065.15
11-08 1055.69
11-09 1040.54
11-10 1033.46
11-11 1026.69
11-12 1034.23
11-13 1020.77
11-14 1099.79
11-15 1094.0
11-16 1073.71
11-17 1062.36
11-18 958.54
11-19 844.5
11-20 988.09
11-21 1219.23
11-22 1307.27
11-23 1203.64
11-24 1187.36
11-25 1166.91
11-26 1160.08
11-27 1166.5
11-28 924.91
11-29 1259.17
11-30 1176.83
12-01 1282.83
12-02 1335.5
12-03 1448.92
12-04 1418.75
12-05 1381.33
12-06 1287.73
12-07 1355.91
12-08 1289.91
12-09 1232.0
12-10 1176.1
12-11 1336.2
12-12 1535.7
12-13 1435.17
12-14 1023.73
12-15 994.0
12-16 887.0
12-17 2529.45
12-18 2045.09
12-19 1809.91
12-20 931.9
12-21 931.1
12-22 1666.1
12-23 1590.0
12-24 1718.7
12-25 2356.2
12-26 1714.4
12-27 1621.89
12-28 1910.33
12-29 1578.75
12-30 1861.89
12-31 1721.89

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index