| April 2004 | Thunderstorm Wind | Richland | $50,000 | Thunderstorm winds blew down trees and power lines. |
| September 2019 | Flood | Richland | $10,000 | After excessive two-day rainfall during September 10-12 (generally 3 to 4 inches around Sioux Falls, 4.72 inches at Canton, 2.51 inches at Hawarden), the Big Sioux River near Richland (gage site BSRS2) reached the 3rd highest stage on record of 6.51 feet above flood stage on September 17. Significant amounts of the agricultural flood plain were inundated, and numerous roads were closed including South Dakota Highway 50 and Iowa Highway 3. |
| October 2019 | Flood | Richland | $5,000 | Rainfall around October 1, which averaged 1.00 to 1.50 inches around Sioux Falls and 2.00 to 3.50 inches in the Rock River Basin and around Hawarden and Akron, pushed the Big Sioux River near Richland (gage site BSRS2) into minor flood. The river crested 1.40 feet above flood stage on October 8. Significant flooding of agricultural land occurred, with a few county and township roads briefly inundated near the river. Property damage costs are rough estimates. |
| September 2019 | Thunderstorm Wind | Richland | $5,000 | Winds snapped a few large trees off a few feet above the ground. Lots of tree limbs down, and numerous shingles removed from house. |
| July 2020 | Thunderstorm Wind | Richland | $3,000 | Several trees were taken down by strong thunderstorm winds. Property damage amounts are rough estimates. |
| July 2025 | Thunderstorm Wind | Richland | - | Two large branches were broken out of a healthy tree. |
| July 2024 | Flood | Richland | - | Flooding continued from June on the Big Sioux River near Richland, with declining river levels. The river fell below flood stage on the morning of July 7th. |
| July 2024 | Thunderstorm Wind | Richland | - | Thunderstorm winds downed a large tree branch in Richland. |
| June 2024 | Flood | Richland | - | The Big Sioux River near Richland rose above flood stage the afternoon of June 21st, cresting around 11.7 feet above flood stage (1128.7 feet) on June 23rd. This crest is in the Major Stage and broke the previous record. The river stayed above flood stage into July. For a more comprehensive description of flood damage, please see other entries for Union County. |
| April 2023 | Flood | Richland | - | The Big Sioux River near Richland, SD rose above flood stage on the morning of April 12th before cresting around 1.36 feet above flood stage (1118.36 feet) on April 15th. The river then fell below flood stage on the evening of April 16th. |
| March 2020 | Flood | Richland | - | With rainfall of 1.72 inches 6 miles north northeast of Elk Point, 1.58 inches at Rock Valley, 1.51 inches at Canton and 1.37 inches at Akron, the Big Sioux River near Richland (gage site BSRS2) rose above flood stage late month. The river crested at 1.62 feet above flood stage on March 31, resulting in significant flooding of agricultural land. The river remained at minor flood stage at the end of the month. |
| April 2020 | Flood | Richland | - | A continuation of minor flooding from March, the Big Sioux River near Richland (gage site BSRS2) began the month 1.67 feet above flood stage, with a steady and slow fall to below flood stage by April 5. Significant agricultutal lands near the river remained flooded. |
| June 2019 | Flood | Richland | - | The Big Sioux River near Richland (gage site BSRS2) crested 2.43 feet above flood stage on June 29, causing significant flooding of crop and pasture land. The river remained in minor flood stage at the end of the month. |
| June 2019 | Flood | Richland | - | A continuation of flooding from May, the Big Sioux River near Richland (gage site BSRS2) began the month at 4.71 feet above flood stage. Significant amounts of agricultural land remained flooded, and further impeded spring planting. |
| March 2019 | Flood | Richland | - | 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 Iowa Highway 3 were both inundated by water for numerous days, with several farm buildings engulfed in flood waters. The Big Sioux River near Richland (gage site BSRS2) reached the second highest crest on record at 7.5 feet above flood stage on March 16. The river remained in moderate flood stage at the end of the month. |
| July 2019 | Flood | Richland | - | A continuation of flooding from June, the Big Sioux River near Richland (gage site BSRS2) crested 2.08 feet above flood stage on July 7 and 2.36 feet above flood stage on July 20, resulting in significant flooding of crop and pasture land. |
| May 2019 | Flood | Richland | - | This is a continuation of flooding from April. The Big Sioux River near Richland (gage site BSRS2) remained in flood through the month. Late month rains pushed the river to a crest at 5.21 feet above flood stage on May 30. Significant agricultural flooding persisted, with no opportunity for spring planting throughout the flood plain. A few farm levees were overtopped on the South Dakota side with flooding of several outbuildings. The river remained at major flood stage at the end of the month. |
| April 2019 | Flood | Richland | - | Runoff from occasional precipitation in late March and April maintained significant flooding of agricultural and pasture lands near the Big Sioux River. The Big Sioux River near Richland (gage site BSRS2) crested at 3.77 feet above flood stage on April 10. Moderate flooding continued at the end of the month. |
| June 2018 | Flood | Richland | - | 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 Highway 50 as well as Iowa Highway 3 going under water. Significant amounts of crop and pasture land were inundated as the river crested near Richland (gage site BSRS2) 7.4 feet above flood stage on June 24. The river remained at major flood stage at months end. |
| July 2018 | Flood | Richland | - | Crop and pasture land near the Big Sioux River was severely impacted as river levels climbed to 4.6 feet above flood stage near Richland (gage site BSRS2) on July 1. |
| September 2018 | Flood | Richland | - | Widespread upstream rainfall in the Big Sioux basin from September 18-20 totaled generally 5 to 10 inches, resulting in major flooding. A few farm buildings were flooded with widespread crop and pasture land flooding as the Big Sioux River near Richland (gage site BSRS2) crested 6.2 feet above flood stage on September 23. The river remained in minor flood stage at the end of the month. |
| October 2018 | Flood | Richland | - | 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 near Richland (gage site BSRS2) crested 3.1 feet above flood stage on October 14. |
| May 2018 | Flood | Richland | - | 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 1.0 feet above flood stage near Richland (gage site BSRS2) on May 14. |
| October 2018 | Flood | Richland | - | A continuation of flooding from September, river levels on the Big Sioux River near Richland (gage site BSRS2) continued to fall in early October. Impacts were limited to minor agricultural flooding. |
| August 2017 | Hail | Richland | - | no account filed |