| June 2010 | Thunderstorm Wind | Akron | 2 hurt, $25,000 | Thunderstorm winds blew over a recreational vehicle, injuring two people. The winds also blew the roof off a building and caused tree damage. |
| June 2014 | Flood | Akron | $500,000 | Repeated heavy rains caused record flooding of the Big Sioux River. Farmland and other lowlands including numerous roads were flooded. Some roads were damaged, and some secondary roads were washed out. Several homes, businesses, and farm buildings were flooded and damaged. A levee breach caused additional flooding in the city of Akron, forcing the evacuation of several residences on the west side of Iowa Highway 12 while the levee was being repaired. The river crested at a record 9.59 feet above flood stage at Akron on June 18th. |
| June 2014 | Flood | Akron | $50,000 | Persistent moderate to heavy rain caused flooding of fields and other lowlands, including several roads, homes, and businesses. This flooding lasted for almost two days, and was aggravated locally by additional storms during that time. Some roads were damaged or washed out. |
| June 2010 | Flash Flood | Akron | $50,000 | Heavy rainfall of up to 4 1/2 inches caused widespread flooding of roads, culverts, other low areas, and basements. A few roads were partially or totally washed out. Fields were flooded and crop damage was suspected, but the amout of crop damage was not known. |
| August 2006 | Thunderstorm Wind | Akron | $50,000 | Thunderstorm winds destroyed a barn and a greenhouse. The winds also caused tree damage, including large trees blown down. |
| June 2021 | Thunderstorm Wind | Akron | $35,000 | Thunderstorm winds destroyed a 100 by 180 foot machine shed. Property damage costs are a rough estimate. |
| March 2009 | Thunderstorm Wind | Akron | $30,000 | Thunderstorm winds damaged a horse shed and moved it off its foundation. The winds also damaged a barn and caused tree damage, including at least one tree uprooted. |
| September 2019 | Flood | Akron | $10,000 | After excessive two-day rainfall during September 10-12 (7.81 inches at Dell Rapids, generally 3 to 4 inches around Sioux Falls, 4.72 inches at Canton), the Big Sioux River at Akron (gage site AKRI4) reached the 9th highest stage on record of 6.28 feet above flood stage on September 16. Significant amounts of the agricultural flood plain were inundated, and numerous roads were closed including South Dakota Highway 48 and Iowa Highways 12 and 3. |
| June 2010 | Thunderstorm Wind | Akron | $10,000 | Thunderstorm winds blew down power lines and caused tree damage, including numerous branches blown down. |
| October 2019 | Flood | Akron | $5,000 | Rainfall around October 1 which averaged 1.00 to 1.50 inches around Sioux Falls and 2.00 to 3.00 inches in the Rock River Basin pushed the Big Sioux River at Akron (gage site AKRI4) into minor flood. The river crested 1.38 feet above flood stage on October 7. Significant flooding of agricultural land occurred, with a few county and township roads briefly inundated near the river. Property damage costs are rough estimates. |
| May 1993 | Thunderstorm Wind | Akron | $5,000 | no account filed |
| July 2024 | Flood | Akron | - | Flooding continued from June on the Big Sioux River at Akron, with declining river levels. The river fell below flood stage on the morning of July 6th. |
| June 2024 | Flood | Akron | - | The Big Sioux River at Akron rose above flood stage the morning of June 21st, cresting around 11.34 feet above flood stage (27.34 feet) on June 23rd. This crest is in the Major Stage and broke the previous record. Significant flooding was observed within the town of Akron itself. The river stayed above flood stage into July. For a more comprehensive description of flood damage, please see other entries for Plymouth County. |
| April 2023 | Flood | Akron | - | The Big Sioux River near Akron, IA rose above flood stage on the evening of April 10th before cresting around 1.94 feet above flood stage (17.94 feet) on April 14th. The river then fell below flood stage on the evening of April 16th. |
| March 2020 | Flood | Akron | - | The Big Sioux River at Akron (gage site AKRI4) crested 0.33 feet above flood stage on March 11. Some rural roads and agricultural lands near the river were flooded. |
| April 2020 | Flood | Akron | - | A continuation of minor flooding from March, the Big Sioux River at Akron (gage site AKRI4) began the month at 1.63 feet above flood stage, with a slow and steady fall to below flood stage on April 5. Significant flooding of crop and pasture land persisted at the start of the month. |
| March 2020 | Flood | Akron | - | With rainfall of 1.58 inches at Rock Valley, 1.51 inches at Canton and 1.37 inches at Akron, the Big Sioux River at Akron (gage site AKRI4) returned to flood at the end of the month. The river crested at 1.66 feet above flood stage on March 31, resulting in significant flooding of crop and pasture land. The river remained at minor flood stage at the end of the month. |
| June 2019 | Flood | Akron | - | The Big Sioux River at Akron (gage site AKRI4) crested 2.62 feet above flood stage on June 28, causing significant flooding of crop and pasture land. The river remained in minor flood stage at the end of the month. |
| June 2019 | Flood | Akron | - | A continuation of flooding from May, the Big Sioux River at Akron (gage site AKRI4) began the month at 4.70 feet above flood stage. South Dakota Highway 48 remained closed. Significant amounts of agricultural land remained flooded, and further impeded spring planting. |
| March 2019 | Flood | Akron | - | Snow melt and heavy rainfall (measured 2.12 inches at Hawarden and 1.75 inches at Akron) resulted in extensive flooding of agricultural land in the flood plain. South Dakota Highway 50 and 48 were both inundated by water for over two weeks, along with the bridge east of Jefferson. The Big Sioux River near Akron (gage site AKRI4) reached the second highest crest on record at 7.82 feet above flood stage on March 16. The river remained in moderate flood stage at the end of the month. |
| July 2019 | Flood | Akron | - | This is a continuation of flooding from June 2019. There were several crests through July, but the most significant for the Big Sioux River at Akron (gage site AKRI4) was a crest 2.54 feet above flood stage on July 19. Significant flooding of crop and pasture land persisted. |
| May 2019 | Flood | Akron | - | This is a continuation of flooding from April. The Big Sioux River at Akron (gage site AKRI4) remained in flood through the month. Late month rains pushed the river to a crest at 5.41 feet above flood stage on May 29. Significant agricultural flooding persisted, with no opportunity for spring planting throughout the flood plain. Several county and township roads returned to a flooded state at months end, with a brief closure of South Dakota Highway 48. The river remained at major flood stage at the end of the month. |
| April 2019 | Flood | Akron | - | Runoff from occasional precipitation in late March and April maintained significant flooding of agricultural and pasture lands near the Big Sioux River, as well as several county roads near the river. The Big Sioux River at Akron (gage site AKRI4) crested at 3.88 feet above flood stage on April 10. Moderate flooding continued at the end of the month. |
| April 2018 | Flood | Akron | - | Snow melt and runoff from periods of heavier rainfall produced moderate flooding which produced significant impact to lowland agricultural areas. Several farmhouses were isolated by the high water levels. River levels reached 3.6 feet above flood stage at Akron (gage site AKRI4) on April 25. The river remained at minor flood stage at the end of the month. |
| April 2018 | Flood | Akron | - | A continuation of flooding from March 2018, the river crested at moderate flood level at Akron (gage site AKRI4) 2.5 feet above flood stage on April 1. |
| March 2018 | Flood | Akron | - | Runoff from rainfall and snow melt caused minor flooding of lowland agricultural areas along lower portions of the Big Sioux River. The river reached as high as 2.5 feet above flood stage near Akron (gage site AKRI4) by the end of the month. |
| July 2018 | Flood | Akron | - | Crop and pasture land near the Big Sioux River was severely impacted as river levels climbed to 4.2 feet above flood stage at Akron (gage site AKRI4) on July 1. |
| May 2018 | Flood | Akron | - | A slow fall through minor flood stages persisted along much of the Big Sioux River during much of the first week of May, with impacts generally limited to flooding of agricultural areas near the river. Flooding ended at Akron (gage site AKRI4) on May 6. |
| September 2018 | Flood | Akron | - | Widespread upstream rainfall in the Big Sioux basin from September 18-20 totaled generally 5 to 10 inches, resulting in major flooding. South Dakota Highway 48 near the intersection of Iowa Highway 12 along with several farm houses were inundated by high water as the Big Sioux River at Akron (gage site AKRI4) crested 6.2 feet above flood stage on September 23. Highway 48 was reopened on September 27, but the river remained in minor flood stage at the end of the month. |
| October 2018 | Flood | Akron | - | River levels on the Big Sioux River at Akron (gage site AKRI4) continued to fall in early October. Impacts were limited to minor agricultural flooding. |
| June 2018 | Flood | Akron | - | A week of periodic heavy rainfall ending June 26 resulted in a widespread 5 to 9 inches of rainfall, much of which occurred on June 20, 24 and 25. Specific weekly totals included 7.47 inches at Canton, 9.15 inches at Rock Valley, 4.47 inches at Akron and 5.01 inches at Hawarden. Major flooding occurred with South Dakota Highways 48 and 50 as well as Iowa Highway 12 going under water. Significant amounts of crop and pasture land were inundated as the river crested at Akron (gage site AKRI4) 7.5 feet above flood stage on June 23. After falling, a second crest 6.2 feet above flood stage occurred on June 28. The river remained at moderate flood stage at months end. |
| October 2018 | Flood | Akron | - | A steady moderate rainfall during October 9-10 - resulting in 1.50 to 2.00 inches of rainfall - produced yet another period of moderate flooding. Significant amounts of agricultural land near the river were inundated. The Big Sioux River at Akron (gage site AKRI4) crested 3.4 feet above flood stage on October 13. |
| May 2018 | Flood | Akron | - | Runoff from periods of heavier rainfall on top of already high river levels produced minor flooding of lowland agricultural areas along lower portions of the Big Sioux River. River levels reached 1.4 feet above flood stage above Hawarden (gage site AKRI4) on May 14. |
| April 2016 | Flood | Akron | - | Runoff from repeated rains caused minor flooding of agricultural land along the Big Sioux River. The river reached a peak stage 1.6 feet above flood stage at Akron at the end of the month. |
| May 2016 | Flood | Akron | - | Minor flooding because of runoff from repeated April rains continued to affect agricultural land along the Big Sioux River. The river crested at 2.2 feet above flood stage at Akron on May 3rd. |
| June 2014 | Thunderstorm Wind | Akron | - | Thunderstorm winds blew down a few small trees, as well as limbs up to 12 inches in diameter. |
| June 2014 | Flood | Akron | - | Persistent moderate to heavy rain caused flooding of some fields and other lowlands, including several roads. This flooding lasted well into the daytime hours after the rain subsided. |
| May 2013 | Flood | Akron | - | Minor to briefly major flooding of the Big Sioux River affected a significant amount of farmland, with other lowlands and several roads also being flooded. The river crested at 4.47 feet above flood stage at Akron on May 28th. |
| May 2012 | Thunderstorm Wind | Akron | - | Thunderstorm winds caused tree damage. Several trees were blown down; some blocking Iowa Highway 12. |
| May 2012 | Flood | Akron | - | Minor to moderate flooding of the lower Big Sioux River affected some farmland and roads. The river crested at 2.26 feet above flood stage at Akron on May 31st. |
| May 2012 | Flood | Akron | - | Minor to moderate flooding of the Big Sioux River affected some farmland, parkland, and a few roads. The river crested at 2.31 feet above flood stage at Akron on May 11th. |
| May 2011 | Flood | Akron | - | Heavy rain caused the lower Big Sioux River to rise again above flood stage, after spring snowmelt flooding subsided. Minor to briefly moderate flooding was reported with some lowlands and a few roads flooded. The river crested at 1.7 feet above flood stage at Akron on May 25th. |
| June 2011 | Flood | Akron | - | Minor to moderate flooding continued on the lower Big Sioux River in June, with some lowlands including some farmland and a few roads flooded. The river fell below flood stage for a few days in the middle of June, rose again due to heavy rains, and began to fall again before the end of the month. The river crested at 3.3 feet above flood stage at Akron on June 25th. |
| April 2011 | Flood | Akron | - | Flooding of The Big Sioux River and other lowlands, including some farmland, continued in the county through most of April. The Big Sioux River crested at 2.9 feet above flood stage at Akron on April 22nd. A few roads remained flooded. High water and groundwater levels resulting from record precipitation in the previous year was the main reason that the flooding either grew worse or improved so slowly. |
| March 2011 | Flood | Akron | - | Melting of a heavy winter snow cover caused moderate to major flooding of the Big Sioux River, as well as flooding of lowlands, lakes, and streams near to and away from the river. The Big Sioux River crested at 4.39 feet above flood stage at Akron on March 26th. There was considerable flooding of farmland. Several roads in the county were flooded. Some of the roads were closed, and a few were washed out in spots. The flooding onset was rapid for a snow melt flood due to high water and groundwater levels from record precipitation in the year 2010. |
| July 2011 | Flood | Akron | - | Moderate to major flooding redeveloped along the Big Sioux River, then subsided during the month. Lowlands along the river were flooded, including some farmland and a few roads. The highest stage at Akron was 4.0 feet above flood stage on July 18th. |
| April 2010 | Flood | Akron | - | Continued flooding of the Big Sioux River from March abated and ended in early April, with minor flooding affecting mainly fields adjacent to the river. Starting the month at near a foot above flood stage at Akron, the river fell below flood stage on April 4th. |
| June 2010 | Thunderstorm Wind | Akron | - | Thunderstorm winds caused tree damage, including several trees uprooted. |
| October 2010 | Flood | Akron | - | Minor to moderate flooding of the Big Sioux River steadily abated and ended during the first few days of the month. Some roads and riverside lowlands including agricultural land were still flooded at the start of the month. |
| July 2010 | Flood | Akron | - | Runoff from late July heavy rain caused minor to moderate flooding along the Big Sioux River. Some roads and fields along the river were flooded. The river rose to over 4 feet above flood stage at Akron at the end of the month and was still rising. |
| August 2010 | Flood | Akron | - | Minor to moderate flooding along the Big Sioux River from late July heavy rains continued at the start of August before quickly abating. Farmland and some roads along the river were flooded. The peak level at Akron was 4.54 feet above flood stage on August 1st. |
| March 2010 | Flood | Akron | - | Rapid melting of a heavy winter snowpack caused flooding of the Big Sioux River which resulted in major flooding along part of the river. Several fields and roads were flooded. The river crested at 6.4 feet above flood stage at Akron on March 17th. |
| June 2010 | Flood | Akron | - | Recurring heavy rain cause moderate flooding of the Big Sioux River. Some roads and fields along the river were flooded. The river crested at just over 3 feet above flood stage at Akron on June 23rd. |
| September 2010 | Flood | Akron | - | Widespread heavy rain, combined with saturated ground, caused a fairly rapid rise of the Big Sioux River to moderate to major flooding levels. Roads and numerous agricultural land near the river were flooded, as well as a few homes. The road flooding included part of Iowa Highway 12. The river crested at 9.7 feet above flood stage near Akron on September 27th. |
| July 2009 | Flash Flood | Akron | - | Heavy rain caused significant flooding of streets in Akron. |
| June 2009 | Funnel Cloud | Akron | - | A funnel cloud was observed by a trained spotter moving southeast. |
| June 2008 | Flood | Akron | - | Heavy rain caused moderate to major flooding of the Big Sioux River. Extensive flooding of farmland and flooding of a few county roads was reported. The amount of damage to crops and to farmland from erosion was not known. The river crested at Akron at 20.22 feet, or 4.22 feet above flood stage. |
| April 2007 | Flood | Akron | - | Heavy rain at the end of march led to minor to locally moderate flooding along the Big Sioux River. Lowlands including some farmland near the river were flooded. |
| March 2007 | Flood | Akron | - | Warm temperatures caused a rapid snowmelt which caused the Big Sioux River to rise above flood stage for several days. The flooding varied from minor to major with lowlands near the river flooded. The amount of damage was not known but was not suspected to be large. The river crested at 5.8 feet above flood stage at Akron in the late evening of March 16th. The snowmelt also caused the Floyd River to flood. It crested at less than half a foor above flood stage on March 14th, but the flooding was a little more upstream where the Floyd River crossed the northern edge of the county. |
| September 2007 | Hail | Akron | - | Large hail covered the ground and stripped trees bare. |
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