Overview
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For multiple days, the region was in a heavy rainfall pattern that brought waves of showers and storms to the Upper Mississippi River Valley. Amazingly, Mother Nature hit different areas each day with heavy rain swaths, lessoning the impact somewhat. These swaths can be seen in the multi-day rainfall graphic to the right. The most significant flooding came on the last day (Monday, August 18) in the pattern from the very early morning into the afternoon. A band of 3 to 6 inches of rain fell from about Decorah to Charles City, Iowa. Many area rivers rose into minor flood stage with the worst flooding on the upper reaches of the Turkey river drainage and the Upper Iowa river. |
 Precipitation Totals from 7am August 15 to 7 am August 19, 2025 |
Flooding - Hydrographs
Cedar River Basin
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| Cedar River near Lansing, MN |
Turtle Creek near Austin, MN |
Dobbins Creek near Austin, MN |
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| Cedar River at Austin, MN |
Cedar River near Austin, MN |
Cedar River near Osage, IA |
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| Little Cedar River near Orchard, IA |
Cedar River at Charles City, IA |
Little Cedar River at Nashua, IA |
Turkey River Basin
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| Turkey River near Spillville, IA | Turkey River near Garber, IA | Turkey River near Elkader, IA |
Upper Iowa River Basin
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| Upper Iowa River near Lime Springs, IA |
Upper Iowa River at Kendallville, IA |
Upper Iowa River at Bluffton, IA |
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| Upper Iowa River at Decorah, IA |
Upper Iowa River near Freeport, IA |
Upper Iowa River at Dorchester, IA |
Root River Basin
 near Pilot Mound.png) |
 above Rushford.png) |
 at Houston.png) |
| Root River near Pilot Mound, MN |
Root River near Rushford, MN |
Root River at Houston, MN |
Flood Photos
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| Flooding near Spillville, IA | Flooding near Spillville, IA | Flooding near New Hampton, IA |
Rainfall Reports
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| Total Rainfall August 15-19 2025 (7am to 7am) |
2-day Rainfall Total August 17-19 2025 (7 am to 7am) |
Location Amount Time/Date Lat/Lon ...Iowa... ...Allamakee County... 3 S Dorchester 5.00 in 1200 PM 08/19 43.42N/91.51W 3 S Dorchester 4.90 in 0100 PM 08/19 43.42N/91.51W Lansing 4.1 NW 3.98 in 0700 AM 08/19 43.40N/91.29W 3 SE Waterville 3.30 in 0107 PM 08/19 43.17N/91.24W Monona 9.8 N 3.01 in 0700 AM 08/19 43.19N/91.35W Harpers Ferry 6.4 SSW 1.87 in 0700 AM 08/19 43.11N/91.20W ...Chickasaw County... New Hampton 3.96 in 0700 AM 08/19 43.06N/92.32W New Hampton 0.4 SW 3.80 in 0700 AM 08/19 43.06N/92.32W New Hampton 3.61 in 0700 AM 08/19 43.06N/92.31W Ionia 2W 3.49 in 1245 PM 08/19 43.03N/92.50W Fredericksburg 0.3 S 2.59 in 0800 AM 08/19 42.96N/92.20W ...Clayton County... Monona 0.2 WNW 1.31 in 0630 AM 08/19 43.05N/91.39W McGregor 6.4 WNW 1.24 in 0650 AM 08/19 43.07N/91.29W Guttenberg 0.6 N 0.79 in 0800 AM 08/19 42.80N/91.10W Elkader 6.8 WSW 0.78 in 0615 AM 08/19 42.81N/91.52W Strawberry Point 0.74 in 0700 AM 08/19 42.69N/91.53W ...Fayette County... Fayette 2.15 in 0700 AM 08/19 42.88N/91.83W Oelwein Municipal Airport 0.13 in 0115 PM 08/19 42.68N/91.97W ...Floyd County... Charles City 1.2 ESE 4.36 in 0701 AM 08/19 43.06N/92.65W 2 NE Dougherty 2.80 in 1120 AM 08/19 42.95N/93.01W Nashua 2SW 2.24 in 0700 AM 08/19 42.94N/92.57W Nora Springs 2.4 SSE 2.10 in 0700 AM 08/19 43.11N/92.99W ...Howard County... Riceville 5.71 in 0115 PM 08/19 43.36N/92.48W Lime Springs 1.5 N 5.42 in 0700 AM 08/19 43.47N/92.28W Saratoga 3.98 in 0115 PM 08/19 43.35N/92.42W 3 E Elma 0.04 in 1020 AM 08/19 43.25N/92.38W ...Mitchell County... Osage 0.6 ENE 2.59 in 0700 AM 08/19 43.29N/92.80W Osage 4.7 E 2.59 in 0700 AM 08/19 43.28N/92.72W St.Ansgar 2.40 in 0118 PM 08/19 43.38N/92.92W St Ansgar 2.26 in 0630 AM 08/19 43.38N/92.92W ...Winneshiek County... 7 ENE Decorah 9.52 in 0816 AM 08/19 43.34N/91.64W Decorah 4.9SE 6.82 in 0700 AM 08/19 43.26N/91.70W Decorah 6.27 in 1125 AM 08/19 43.30N/91.79W ...Minnesota... ...Dodge County... Pine Island 5.3 WSW 4.01 in 0700 AM 08/19 44.18N/92.75W Hayfield 0.3 SSE 3.18 in 0630 AM 08/19 43.89N/92.85W Hayfield 2.60 in 0117 PM 08/19 43.89N/92.85W Kasson 5.7 SE 1.68 in 0930 AM 08/19 43.96N/92.68W Hayfield 0.7 SSE 1.59 in 0700 AM 08/19 43.88N/92.84W Mantorville 1.1 SSE 0.87 in 0700 AM 08/19 44.05N/92.74W ...Fillmore County... Harmony 0.3 S 7.67 in 0700 AM 08/19 43.55N/92.01W Spring Valley 7.12 in 0700 AM 08/19 43.69N/92.39W Spring Valley 0.9 NNW 6.75 in 0700 AM 08/19 43.70N/92.40W Wykoff 3.1 NW 5.86 in 0700 AM 08/19 43.74N/92.31W 6 N Spring Valley 4.81 in 0700 AM 08/19 43.78N/92.39W Lanesboro 0.2 SSW 4.59 in 0600 AM 08/19 43.72N/91.97W Chatfield 9.0 ESE 4.57 in 0700 AM 08/19 43.79N/92.03W Lanesboro 4.17 in 1230 PM 08/19 43.72N/91.98W 1 NNW Fillmore 3.82 in 1230 PM 08/19 43.76N/92.27W Chatfield 6.3 ESE 3.72 in 0700 AM 08/19 43.81N/92.08W Chatfield 1.5 SE 3.33 in 0700 AM 08/19 43.83N/92.17W Preston 2.7 NE 2.83 in 0700 AM 08/19 43.70N/92.05W Rushford 0.9 NNW 2.44 in 0700 AM 08/19 43.83N/91.76W ...Houston County... SPRING GROVE 3.89 in 0120 PM 08/19 43.56N/91.64W Eitzen 3.8 E 3.53 in 0800 AM 08/19 43.50N/91.39W Caledonia 7.7 SE 3.42 in 0800 AM 08/19 43.57N/91.38W 1 ENE Mound Prairie 2.68 in 0600 AM 08/19 43.79N/91.42W Hokah 4 NW 2.68 in 0700 AM 08/19 43.80N/91.43W Hokah 2.63 in 0115 PM 08/19 43.80N/91.43W Houston 8.6 WSW 2.56 in 0706 AM 08/19 43.69N/91.72W Houston 5.3 SW 2.48 in 0653 AM 08/19 43.71N/91.65W Mound Prairie 2.45 in 1245 PM 08/19 43.78N/91.45W Caledonia 5.3 NNE 2.17 in 0558 AM 08/19 43.71N/91.46W Houston 2.3 NNW 1.47 in 0700 AM 08/19 43.79N/91.59W Caledonia 1.46 in 0600 AM 08/19 43.63N/91.50W La Crescent 5.6 S 1.40 in 0805 AM 08/19 43.75N/91.29W Houston 0.84 in 0117 PM 08/19 43.77N/91.58W ...Mower County... Grand Meadow 7.90 in 0530 AM 08/19 43.71N/92.56W Ostrander 5.1 WNW 7.09 in 0700 AM 08/19 43.65N/92.52W Waltham 2.0 SE 5.75 in 0800 AM 08/19 43.80N/92.85W Waltham 2.9 SW 5.33 in 0800 AM 08/19 43.79N/92.91W Austin 1.5 WSW 4.28 in 0700 AM 08/19 43.67N/93.00W Lansing - Cedar River 4.21 in 1230 PM 08/19 43.75N/92.96W Dobbins Creek 3.90 in 1230 PM 08/19 43.68N/92.94W Austin 2.4 W 3.70 in 0643 AM 08/19 43.67N/93.02W Austin 3.4 WNW 3.68 in 0700 AM 08/19 43.70N/93.03W Austin 1.9 ENE 3.34 in 0800 AM 08/19 43.68N/92.94W ...Olmsted County... Rochester 6.11 in 0115 PM 08/19 44.04N/92.44W Stewartville 4.3 E 4.29 in 0600 AM 08/19 43.86N/92.40W Rochester 1.5 WSW 3.90 in 0600 AM 08/19 44.00N/92.50W Chatfield 1.7 NE 3.90 in 0800 AM 08/19 43.86N/92.17W Chatfield 2.7 NNW 3.87 in 0800 AM 08/19 43.88N/92.22W Byron 5.5 SE 3.58 in 0730 AM 08/19 43.97N/92.58W Rochester 3.56 in 0120 PM 08/19 44.09N/92.51W Rochester 4.2 N 3.50 in 0610 AM 08/19 44.08N/92.49W Rochester AP 2NE 3.47 in 0700 AM 08/19 43.93N/92.48W 2 W High Forest 3.43 in 0700 AM 08/19 43.85N/92.59W 1 W Chester 3.40 in 0630 AM 08/19 44.00N/92.38W Rochester 3.20 in 0120 PM 08/19 44.09N/92.49W Rochester 4.7 N 3.12 in 0700 AM 08/19 44.08N/92.48W Rochester 8.2 SE 3.11 in 0700 AM 08/19 43.94N/92.35W Rochester 2.0 NNE 2.98 in 0700 AM 08/19 44.04N/92.47W Rochester 3.9 ESE 2.98 in 0730 AM 08/19 43.99N/92.41W 2 NE Rochester 2.80 in 0600 AM 08/19 44.04N/92.44W Rochester 3.9 NNW 2.78 in 0800 AM 08/19 44.07N/92.51W Rochester 2.4 WNW 2.63 in 0800 AM 08/19 44.02N/92.53W Rochester 3.1 SW 2.60 in 0700 AM 08/19 43.98N/92.52W Rochester 4.1 ENE 2.57 in 0830 AM 08/19 44.04N/92.40W 3 ENE Rochester 2.57 in 1230 PM 08/19 44.03N/92.43W Rochester 5.5 N 2.55 in 0915 AM 08/19 44.10N/92.47W Rochester 2.42 in 0115 PM 08/19 44.05N/92.40W Rochester-Beltline Bear Cree 2.14 in 1230 PM 08/19 44.01N/92.45W 5 WSW Rochester 2.12 in 0100 PM 08/19 43.98N/92.56W Byron 2.11 in 1125 AM 08/19 44.03N/92.63W Rochester International Airp 1.82 in 1254 PM 08/19 43.90N/92.50W Rochester 0.2 SW 1.81 in 0700 AM 08/19 44.01N/92.48W Elgin 2SSW 1.80 in 0700 AM 08/19 44.10N/92.27W Mayo Helipad 1.64 in 1255 PM 08/19 44.02N/92.48W ROCHESTER 1.41 in 0119 PM 08/19 43.93N/92.47W 1 W Oronoco 1.39 in 1230 PM 08/19 44.17N/92.55W Rochester 1.39 in 0115 PM 08/19 44.18N/92.41W Rochester 1.29 in 0120 PM 08/19 44.05N/92.53W Rochester 5.6 S 1.09 in 0700 AM 08/19 43.93N/92.47W ...Wabasha County... Elgin 0.4 WNW 3.45 in 0630 AM 08/19 44.13N/92.26W Wabasha 6.2 WNW 3.02 in 0700 AM 08/19 44.39N/92.16W Lake City 0.9 NNE 2.83 in 0700 AM 08/19 44.45N/92.27W Lake City 2.72 in 1120 AM 08/19 44.44N/92.27W Lake City 2.72 in 0115 PM 08/19 44.44N/92.28W Lake City 0.7 SE 2.38 in 0800 AM 08/19 44.43N/92.27W Lake City 0.9 E 1.93 in 0800 AM 08/19 44.44N/92.26W Lake City 9.7 SW 1.48 in 0700 AM 08/19 44.34N/92.41W Mazeppa 3.3 SSE 1.42 in 0800 AM 08/19 44.23N/92.51W Zumbro Falls 3.5 SSW 1.34 in 0715 AM 08/19 44.24N/92.46W 1 N Kellogg 1.32 in 0100 PM 08/19 44.32N/92.00W ...Winona County... Minneiska 1.1 SW 3.52 in 0700 AM 08/19 44.18N/91.88W 4.2 N Rollingstone 2.45 in 0546 AM 08/19 44.16N/91.81W Winona 6.9 ESE 2.26 in 0650 AM 08/19 44.00N/91.55W La Crescent 4.0 NNW 2.26 in 0115 PM 08/19 43.88N/91.34W Altura 0.7 NNE 2.13 in 0700 AM 08/19 44.07N/91.94W La Crescent 4.0 NNW 2.12 in 0700 AM 08/19 43.88N/91.34W 3 SW Elba 2.11 in 1230 PM 08/19 44.06N/92.05W Winona Municipal Airport 2.06 in 0115 PM 08/19 44.07N/91.70W Beaver 2.04 in 1245 PM 08/19 44.15N/92.00W 1 E Nodine 2.03 in 0700 AM 08/19 43.90N/91.41W 1 WSW Elba 1.88 in 1245 PM 08/19 44.09N/92.03W Plainview 1.83 in 0120 PM 08/19 44.05N/91.65W Winona 2.0 ESE 1.73 in 0700 AM 08/19 44.04N/91.63W Winona 1.9 ESE 1.65 in 0722 AM 08/19 44.04N/91.63W 1 ESE Winona 1.63 in 1120 AM 08/19 44.04N/91.63W Whitewater State Park 1.20 in 1245 PM 08/19 44.05N/92.05W ...Wisconsin... ...Adams County... Friendship 6.4 NNE 3.92 in 0700 AM 08/19 44.06N/89.79W Nekoosa 8.0 SSE 3.78 in 0700 AM 08/19 44.21N/89.85W Oxford 4.0 W 3.59 in 0700 AM 08/19 43.79N/89.64W Oxford 4.3 W 3.51 in 0800 AM 08/19 43.79N/89.65W ...Buffalo County... Mondovi 12.1 SSE 4.70 in 0634 AM 08/19 44.40N/91.60W Independence 9.1 NW 3.87 in 0730 AM 08/19 44.46N/91.55W ...Clark County... COLBY 2.33 in 0118 PM 08/19 44.91N/90.32W Greenwood 0.6 NNW 1.99 in 0700 AM 08/19 44.77N/90.60W Thorp 0.5 NNE 1.83 in 0515 AM 08/19 44.97N/90.80W Thorp 10.1 S 1.82 in 0600 AM 08/19 44.81N/90.82W 4 NNW Sidney 1.61 in 0700 AM 08/19 44.61N/90.65W Willard 6.2 W 0.50 in 0800 AM 08/19 44.73N/90.85W ...Crawford County... Eastman 2.4 NNE 3.26 in 0700 AM 08/19 43.20N/91.00W Prairie Du Chien Airport 2.37 in 0115 PM 08/19 43.02N/91.12W Steuben 1.07 in 1245 PM 08/19 43.18N/90.86W 2.8 E Harpers Ferry 1.05 in 0115 PM 08/19 43.21N/91.10W Gays Mills 1.0 NE 0.72 in 0700 AM 08/19 43.33N/90.84W ...Grant County... Lancaster 4.83 in 1241 PM 08/19 42.83N/90.69W Bloomington 3.5 N 2.99 in 0701 AM 08/19 42.94N/90.92W 1 NE Platteville 2.98 in 0700 AM 08/19 42.75N/90.46W Stitzer 1.8 SE 2.66 in 0700 AM 08/19 42.91N/90.60W 4.3 W Lancaster 2.63 in 0800 AM 08/19 42.83N/90.79W Dickeyville 0.1 SW 2.61 in 0655 AM 08/19 42.62N/90.59W Prairie Du Chien 9.9 SE 2.21 in 0700 AM 08/19 42.95N/90.99W Platteville Municipal Airpor 2.07 in 0115 PM 08/19 42.68N/90.43W Patch Grove 0.1 NNW 1.84 in 0700 AM 08/19 42.94N/90.97W 4 S Muscoda 1.71 in 0600 AM 08/19 43.12N/90.45W Muscoda 0.5 WSW 1.63 in 0719 AM 08/19 43.18N/90.44W Cassville 7.8 ENE 1.20 in 0700 AM 08/19 42.75N/90.84W Boscobel Airport 1.03 in 0111 PM 08/19 43.15N/90.68W Boscobel 0.87 in 0103 PM 08/19 43.15N/90.68W Platteville 0.45 in 0120 PM 08/19 42.74N/90.46W ...Jackson County... Mather 3NW 2.50 in 0700 AM 08/19 44.17N/90.35W Melrose 3.6 W 2.32 in 0645 AM 08/19 44.13N/91.07W Black River Falls Area Airpo 2.16 in 0115 PM 08/19 44.25N/90.85W ...Juneau County... New Lisbon 5.85 in 0115 PM 08/19 43.87N/90.17W 1.0 E Mauston 3.57 in 0630 AM 08/19 43.79N/90.06W Mauston Airport 3.31 in 1255 PM 08/19 43.83N/90.13W Necedah 2.21 in 1248 PM 08/19 44.03N/90.08W Volk Field 1.75 in 1255 PM 08/19 43.93N/90.27W 0.6 W Necedah 1.58 in 1248 PM 08/19 44.02N/90.08W Mauston Airport 1.05 in 0115 PM 08/19 43.83N/90.13W ...La Crosse County... Bangor 2.64 in 1120 AM 08/19 43.89N/90.99W Onalaska 1.9 E 2.30 in 0700 AM 08/19 43.89N/91.18W Onalaska 2.29 in 0119 PM 08/19 43.89N/91.18W Onalaska 0.6 SW 2.13 in 0800 AM 08/19 43.88N/91.23W La Crosse 2.11 in 0108 PM 08/19 43.82N/91.19W Burns 2.10 in 0115 PM 08/19 43.91N/90.97W Coon Valley 4.5 NNW 1.99 in 0700 AM 08/19 43.76N/91.06W La Crosse 4NNW 1.92 in 0730 AM 08/19 43.87N/91.27W La Crosse Regional Airport 1.85 in 1253 PM 08/19 43.88N/91.25W La Crosse 1.5 SSE 1.81 in 0700 AM 08/19 43.81N/91.22W Holmen 1.7 SSE 1.81 in 0700 AM 08/19 43.93N/91.24W La Crosse 1.39 in 0115 PM 08/19 43.77N/91.22W ...Monroe County... Cashton 3 NNW 2.97 in 0740 AM 08/19 43.79N/90.80W Warrens 4.7 WSW 2.74 in 0700 AM 08/19 44.10N/90.59W Norwalk 4.9 NNE 0.79 in 0700 AM 08/19 43.90N/90.60W ...Richland County... Hillsboro 10.7 SW 0.91 in 0700 AM 08/19 43.55N/90.49W Richland Center 3.9 WSW 0.63 in 0800 AM 08/19 43.31N/90.45W Richland Center 4.0 N 0.41 in 0800 AM 08/19 43.40N/90.39W ...Taylor County... Medford 1.87 in 0115 PM 08/19 45.30N/90.30W Medford 0.8 ENE 1.60 in 0700 AM 08/19 45.14N/90.33W Westboro 0.93 in 0115 PM 08/19 45.37N/90.31W 3 NE Lublin 0.25 in 1214 PM 08/19 45.11N/90.69W ...Trempealeau County... Courtland 0.3 SW 4.14 in 0700 AM 08/19 44.27N/91.35W Blair (IFLOWS) 3.71 in 0339 AM 08/19 44.30N/91.23W Trempealeau 3.64 in 0117 PM 08/19 44.07N/91.51W Ettrick 4.0 WNW 3.59 in 0800 AM 08/19 44.19N/91.34W 2 ENE Marshland 3.54 in 1120 AM 08/19 44.09N/91.51W Galesville 1.0 NE 3.52 in 0600 AM 08/19 44.10N/91.34W Trempealeau 7.6 NNW 3.24 in 0700 AM 08/19 44.11N/91.48W Whitehall (IFLOWS) 2.67 in 0919 AM 08/19 44.37N/91.32W Galesville 3.0 ENE 2.42 in 0745 AM 08/19 44.11N/91.30W 0.8 SW Pigeon Falls (IFLOWS) 0.35 in 0553 AM 08/19 44.42N/91.22W Galesville 4.7 E 0.33 in 0733 AM 08/19 44.08N/91.26W ...Vernon County... La Farge 3.38 in 0115 PM 08/19 43.60N/90.63W Viroqua 0.8 ESE 2.83 in 0700 AM 08/19 43.55N/90.87W Genoa 2.77 in 0113 PM 08/19 43.56N/91.22W 0.5 E Viroqua 2.39 in 0700 AM 08/19 43.56N/90.88W La Farge 5.5 E 1.88 in 0700 AM 08/19 43.57N/90.53W Stoddard 1.5 NE 1.49 in 0700 AM 08/19 43.67N/91.19W Stoddard 4.7 NNE 1.47 in 0700 AM 08/19 43.72N/91.17W Westby 5.8 NW 1.45 in 0700 AM 08/19 43.70N/90.95W Genoa Dam 8 0.05 in 0115 PM 08/19 43.57N/91.23W Observations are collected from a variety of sources with varying equipment and exposures. We thank all volunteer weather observers for their dedication. Not all data listed are considered official. $$
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