For the second night in a row, thunderstorms with very heavy rain rolled across northeast Iowa producing widespread flash flooding during the evening of June 22nd. At least three rounds of thunderstorms moved across the area dumping another 3 to 4 inches of rain on ground that was saturated from heavy rains that fell less than 24 hours before. Numerous mudslides occurred across Allamakee County, a campground had be evacuated near Bluffton (Winneshiek County) and water along the Upper Iowa River closed several roads in Howard County. Officials also had to evacuate around 80 people from a campground south of Harpers Ferry (Allamakee County). With the repeated episodes of severe weather with flash flooding, the Governor of the State of Iowa declared disaster proclamations for Allamakee, Chickasaw, Clayton, Fayette, Floyd, Mitchell and Winneshiek Counties. FEMA declared a federal disaster area for the following counties: Allamakee, Clayton and Winneshiek.

Heavy Rain in CLAYTON, IOWA
From 22-JUN-13 05:00:00 to 23-JUN-13 05:00:00 (CST-6)
Location: GUTTENBURG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at the Guttenberg Lock and Dam reported 4.05 inches of rain.

Heavy Rain in ALLAMAKEE, IOWA
From 22-JUN-13 06:00:00 to 23-JUN-13 06:00:00 (CST-6)
Location: CHESTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer in Dorchester reported 3.36 inches of rain.

Heavy Rain in ALLAMAKEE, IOWA
From 22-JUN-13 06:07:00 to 23-JUN-13 06:07:00 (CST-6)
Location: WAUKON JCT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet observing equipment near the Yellow River southeast of Waterville measured 4 inches of rain.

Heavy Rain in WINNESHIEK, IOWA
From 22-JUN-13 08:52:00 to 23-JUN-13 08:52:00 (CST-6)
Location: CALMAR
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

In Calmar, 3.5 inches of rain was reported.

Flood in FLOYD, IOWA
From 24-JUN-13 03:15:00 to 24-JUN-13 13:00:00 (CST-6)
Location: CHARLES CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from heavy rain pushed the Cedar River out of its banks in Charles City. The river crested just over flood stage at 12.18 feet.

Flash Flood in ALLAMAKEE, IOWA
From 22-JUN-13 23:25:00 to 23-JUN-13 06:00:00 (CST-6)
Location: LANSING
Flood cause: Heavy Rain
Property damage: 6.40M
Crop damage: 0.00K
Reported by: Law Enforcement

Mudslides occurred over the eastern section of the county from Lansing to north of Harpers Ferry covering portions of County Road X52. Other flash flooding occurred over much of the county. A campground in the Yellow River State Forest had to be evacuated with 80 campers moved to community building in Harpers Ferry. No injuries occurred, but one car was swept away by flood waters on Little Paint Creek. In Waukon, a number of businesses had water up to two feet deep in them with basements completely filled with water. The flooding also caused the utility company to shut off natural gas service to about 60 customers to prevent the possibility of gas leaks to appliances that could have been submerged and pilot lights extinguished. Homes in the Lansing area were damaged by the mudslides with a least one home knocked off its foundation and evacuations of other homes were required along Wall Street.

Flash Flood in WINNESHIEK, IOWA
From 23-JUN-13 02:08:00 to 23-JUN-13 06:00:00 (CST-6)
Location: CASTALIA
Flood cause: Heavy Rain
Property damage: 900.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused flash flooding to occur across Winneshiek County, especially the northern sections. Rapidly rising waters along the Upper Iowa River caused a campground in Bluffton to be evacuated and covered numerous roads in Burr Oak Township stranding residences.

Flash Flood in HOWARD, IOWA
From 22-JUN-13 23:50:00 to 23-JUN-13 06:00:00 (CST-6)
Location: RICEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain pushed the Upper Iowa River and numerous smaller streams that drain into the Upper Iowa River out of their banks. The water covered several roads across the northern portion of Howard County.