Major to record flooding occurred during the month of June 2008 with most forecast points above flood stage for the majority of the month.  The flooding during this month was more prolific and severe than the flooding in April 2008, and the flooding in April had been the most prolific flood event since 1997.
While some locations were still experiencing flooding as June began, many of the tributary rivers to the Mississippi in Iowa rose above flood stage during the first few days of the month.  At locations that were already above flood stage, the rivers stopped their fall and began climbing again.
Persistent heavy rain from late May into early June resulted in record crests on the Cedar and Iowa Rivers in Iowa as well as other tributary rivers to the Mississippi River in eastern Iowa and southern Wisconsin. This resulted in record flooding on parts of the Mississippi River, even exceeding flood levels reached during the Great Flood of 1993 in some locations.
Both the Mississippi River and the Rock River rose above flood stage at most locations around June 10th.  Most locations on the tributary rivers and the Mississippi River fell below flood stage during the last two-thirds of the month.
The Cedar, Iowa and Mississippi Rivers were hardest hit by this flooding.  (The Mississippi River was most affected downstream of New Boston Lock and Dam 17.)  All forecast points on the Cedar and Iowa Rivers saw record crests during the month.  Three locations on the Mississippi River downstream of New Boston Lock and Dam 17 saw record crests.  In some locations, the new record crests were considerably higher than the previous record crests.  The most significant example was the Cedar River at Cedar Rapids, IA.  The crest during this event was 31.12 ft set on 6/13/2008.  The previous record crest was 20.00 feet set on 6/1/1851.
The crest on the Cedar River became increasingly higher as it moved through the eastern IA from Waterloo, IA because of additional rainfall.  Additional heavy rainfall occurred between when the crest left the Waterloo area and when it arrived in the Cedar Rapids area.  In addition, heavy rainfall led to flash flooding when the Cedar River crest reached Cedar Rapids.  Unprecedented flooding occurred at many locations along the Cedar River, including the cities of Vinton and Cedar Rapids.  According to the Cedar Rapids media, very preliminary damage estimates from this flood are estimated to be at least $750 million in that area alone.  The damage estimate may go much higher.
On the Iowa River, water flowed over the spillway at the Corps of Engineer���s Coralville Reservoir for only the third time since the reservoir began operation on September 17, 1958.  (The other two times occurred during the Great Flood of 1993.)  Unprecedented flooding occurred downstream of Coralville Reservoir including the cities of Iowa City and Coralville.  The University of Iowa sustained serious damage in Iowa City due to the flooding.  The latest damage estimate from the University of Iowa is $230 million which is much higher than the $6 million in damages that occurred during the Great Flood of 1993.
Many roads in eastern Iowa and northwestern Illinois sustained severe damage from the flooding.  The flooding also forced the closure of many roads including I-80, I-380 and US 34.  On I-80, flood waters from the Cedar River flowed over the interstate resulting in its closure between interchanges #265 and #267.  This location is between Iowa City, IA and Davenport, IA.  The detour route was designated as US 61 to US 20 to I-35.  This detour added 115 miles to the normal route.
In addition, flooding from Coralville Lake resulted in the closure of I-380 between interchanges #4 and #10.  This location is between Cedar Rapids, IA and Iowa City, IA.  The detour route for I-380 was designated as I-80 to I-35 to US 20 to I-380.  This detour added 272 miles to the normal route.
As the record flooding pushed downstream on the Cedar and Iowa Rivers, it continued bringing unprecedented impacts to many locations along those rivers.  Several levee breaches occurred on the Iowa River (below Columbus Junction, IA) and the Mississippi River (below New Boston IL LD17).  A levee breach on the Mississippi River affected the Burlington, IA area.  A levee breach on the Illinois side of the river resulted in the flooding of Gulfport, IL and the closure of the US Hwy 34 bridge. Damage estimates just in eastern IA were around $1 billion.
As of August 6, 2008 the governor of Iowa estimated damage to the entire state of Iowa from the flooding could be as high as at least
$10 billion.

Flood in BENTON, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: MT AUBURN
Flood cause: Heavy Rain
Property damage: 10.00M
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Cedar River at Vinton occurred on June 12, 2008 at 24.60 feet. Flood stage is 15 feet.

Flood in BUCHANAN, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: LITTLETON
Flood cause: Heavy Rain
Property damage: 3.10M
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in CEDAR, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: CEDAR BLUFF
Flood cause: Heavy Rain
Property damage: 3.50M
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in SCOTT, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: MC CAUSLAND
Flood cause: Heavy Rain
Property damage: 4.40M
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in VAN BUREN, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: SELMA
Flood cause: Heavy Rain
Property damage: 540.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in WASHINGTON, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: WELLMAN
Flood cause: Heavy Rain
Property damage: 198.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in CLINTON, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: TORONTO
Flood cause: Heavy Rain
Property damage: 646.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in DELAWARE, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: BACKBONE STATE PARK
Flood cause: Heavy Rain
Property damage: 4.20M
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in DES MOINES, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: HURON
Flood cause: Heavy Rain
Property damage: 3.80M
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Mississippi River at Burlington occurred on June 17, 2008 at 25.73 feet. Flood stage is 15 feet.

Flood in DUBUQUE, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: BALLTOWN
Flood cause: Heavy Rain
Property damage: 6.40M
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in HENRY, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: ROME
Flood cause: Heavy Rain
Property damage: 535.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in IOWA, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: KOSZTA
Flood cause: Heavy Rain
Property damage: 747.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Iowa River at Marengo occurred on June 12, 2008 at 21.38 feet. Flood stage is 14 feet.

Flood in JACKSON, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: CANTON
Flood cause: Heavy Rain
Property damage: 599.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in JEFFERSON, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: CAPPOCK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in JOHNSON, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: KENT COUNTY PARK
Flood cause: Heavy Rain
Property damage: 230.00M
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Iowa River at Iowa City occurred on June 15, 2008 at 31.53 feet. Flood stage is 22 feet. The record crest on the Iowa River at Lone Tree occurred on June 15, 2008 at 23.15 feet. Flood stage is 15 feet. Preliminary damage estimates just to the University of Iowa at Iowa City was at least $230 million. This compares to $6 million in damages during the Great Flood of 1993. Water flowed over the spillway at the Corps of Engineer's Coralville Reservoir for only the third time since the reservoir began operation on September 17, 1958. (The previous two times occurred in the summer of 1993). The result was unprecedented flooding downstream of the reservoir in the cities of Iowa City and Coralville.

Flood in JONES, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: STONE CITY
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Wapsipinicon River at Anamosa occurred on June 13, 2008 at 26.18 feet. Flood stage is 14 feet.

Flood in KEOKUK, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: DELTA
Flood cause: Heavy Rain
Property damage: 570.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in LEE, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: WEVER
Flood cause: Heavy Rain
Property damage: 4.50M
Crop damage: 0.00K
Reported by: Emergency Manager

Flood in LINN, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: CENTER PT
Flood cause: Heavy Rain
Property damage: 750.00M
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Cedar River at Cedar Rapids occurred on June 13, 2008 at 31.12 feet. Flood stage is 12 feet. The previous record crest was 20.00 feet set on June 1, 1851. Damage estimates just in Cedar Rapids was at least $750 million.

Flood in LOUISA, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: GLADWIN
Flood cause: Heavy Rain
Property damage: 19.00M
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Iowa River at Columbus Junction occurred on June 16, 2008 at 32.49 feet. Flood stage is 19 feet. The record crest on the Iowa River at Wapello occurred on June 14, 2008 at 32.15 feet. Flood stage is 20 feet.

Flood in MUSCATINE, IOWA
From 01-JUN-08 00:00:00 to 30-JUN-08 23:59:00 (CST-6)
Location: MONTPELIER
Flood cause: Heavy Rain
Property damage: 9.10M
Crop damage: 0.00K
Reported by: Emergency Manager

The record crest on the Cedar River at Conesville occurred on June 15, 2008 at 23.40 feet. Flood stage is 13 feet.