Primed by 1 to 3 inches of rainfall on June 17-18, starting June 20, the area was impacted adversely by several very slow moving mid-level waves which drifted across the northern and central Plains during the following week. High precipitable water and persistent lift forcing resulted in a widespread 4 to 9 inches of rainfall, inundating crop and pasture land as well as damaging infrastructure.

Flood in O'BRIEN, IOWA
From 21-JUN-18 00:00:00 to 21-JUN-18 23:00:00 (CST-6)
Location: RITTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A week of periodic heavy rainfall ending June 26 resulted in a widespread 4 to 8 inches of rainfall, much of which occurred on June 20 and 24. Weekly rainfall totaled 7.36 inches at Sheldon, 7.31 inches at Sibley and 6.13 inches at Sanborn. Moderate flooding occurred with significant amounts of crop and pasture land, as well as the Sheldon Golf Course, inundated as the Floyd River at Sheldon (gage site SHLI4) crested 3.5 feet above flood stage on June 21. The river dropped below flood stage on June 21.

Flood in SIOUX, IOWA
From 21-JUN-18 00:00:00 to 21-JUN-18 23:00:00 (CST-6)
Location: SHELDON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A week of periodic heavy rainfall ending June 26 resulted in a widespread 4 to 8 inches of rainfall, much of which occurred on June 20 and 24. Weekly rainfall totaled 7.36 inches at Sheldon, 7.31 inches at Sibley and 6.13 inches at Sanborn. Moderate flooding occurred with significant amounts of crop and pasture land, as well as the Sheldon Golf Course, inundated as the Floyd River at Sheldon (gage site SHLI4) crested 3.5 feet above flood stage on June 21. The river dropped below flood stage on June 21.

Flood in O'BRIEN, IOWA
From 21-JUN-18 11:00:00 to 28-JUN-18 16:00:00 (CST-6)
Location: PHILBY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A week of periodic heavy rainfall ending June 26 resulted in a widespread 4 to 8 inches of rainfall, much of which occurred on June 20 and 24. Weekly rainfall totaled 9.11 inches near Sioux Center, 7.36 inches at Sheldon, 7.31 inches at Sibley, 6.13 inches at Sanborn and 5.50 inches at Orange City. Record flooding occurred with significant amounts of crop and pasture land inundated. Water covered all lanes of state highway 60 as the Floyd River at Alton (gage site ALTI4) crested 8.6 feet above flood stage on June 21. The river fell briefly below flood stage on June 24, but then rose again to a moderate flood crest at 5.8 feet above flood stage on June 26.  The river dropped below flood stage on June 28.

Flood in PLYMOUTH, IOWA
From 22-JUN-18 07:00:00 to 28-JUN-18 14:00:00 (CST-6)
Location: STRUBLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A week of periodic heavy rainfall ending June 26 resulted in a widespread 4 to 8 inches of rainfall, much of which occurred on June 20 and 24. Weekly rainfall totaled 9.11 inches near Sioux Center, 7.36 inches at Sheldon, 7.31 inches at Sibley, 6.13 inches at Sanborn, 5.50 inches at Orange City and 4.69 inches at Le Mars. Major flooding occurred with significant amounts of crop and pasture land inundated. Water covered the northbound lanes of state highway 60 near Le Mars as the Floyd River at Le Mars (gage site LMRI4) crested 4.5 feet above flood stage on June 22. The river fell briefly below flood stage on June 24, but then rose again to a moderate flood crest at 3.0 feet above flood stage on June 27. The river dropped below flood stage on June 28.

Flood in PLYMOUTH, IOWA
From 25-JUN-18 19:00:00 to 28-JUN-18 13:00:00 (CST-6)
Location: WEST LE MARS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A week of periodic heavy rainfall ending June 26 resulted in a widespread 4 to 8 inches of rainfall, much of which occurred on June 20 and 24. Weekly rainfall totaled 9.11 inches near Sioux Center, 7.36 inches at Sheldon, 7.31 inches at Sibley, 6.13 inches at Sanborn, 5.50 inches at Orange City, 4.69 inches at Le Mars and 4.54 inches at Remsen. Major flooding occurred with significant amounts of crop and pasture land inundated. Water encroached on the homes on the east side of Merrill, and covered county highway C44 as the Floyd River at Merrill (gage site MRLI4) crested 4.1 feet above flood stage on June 27. The river dropped below flood stage on June 28.

Flood in SIOUX, IOWA
From 21-JUN-18 21:00:00 to 27-JUN-18 11:00:00 (CST-6)
Location: MAURICE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A week of periodic heavy rainfall ending June 26 resulted in a widespread 4 to 8 inches of rainfall, much of which occurred on June 20 and 24. Weekly rainfall totaled 5.50 inches at Orange City and 4.69 inches at Le Mars. Moderate flooding occurred with significant amounts of crop and pasture land inundated as the West Branch of the Floyd River near Struble (gage site STUI4) crested 1.5 feet above flood stage on June 22. The river dropped below briefly below flood stage on June 22. but then reached a second moderate crest 1.2 feet above flood stage on June 25.  The river fell below flood stage on June 27.

Flood in PLYMOUTH, IOWA
From 21-JUN-18 21:00:00 to 27-JUN-18 11:00:00 (CST-6)
Location: STRUBLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A week of periodic heavy rainfall ending June 26 resulted in a widespread 4 to 8 inches of rainfall, much of which occurred on June 20 and 24. Weekly rainfall totaled 5.50 inches at Orange City and 4.69 inches at Le Mars. Moderate flooding occurred with significant amounts of crop and pasture land inundated as the West Branch of the Floyd River near Struble (gage site STUI4) crested 1.5 feet above flood stage on June 22. The river dropped below briefly below flood stage on June 22. but then reached a second moderate crest 1.2 feet above flood stage on June 25.  The river fell below flood stage on June 27.