The second week of April saw rainfall totals between 2 inches and 5 inches across southern Wisconsin. These totals represented 300 percent to 600 percent of the amount normally seen from April 7th through the 14th.  This pushed several of the rivers into minor to moderate flooding, with major flooding at several locations on the Rock River, and on the Fox River at New Munster, inundating nearby land areas and roads. Rivers crested between 1 foot and 4.5 feet above flood stage. Runoff was enhanced by a lingering deep frost layer. While the top 4 or 5 inches of soil had thawed, there was still a foot or more of frost below the top-most unfrozen layer, preventing much of the rain from percolating into the ground. Some of the fast-responding rivers and streams fell back within their banks in a day or two, while others remained above flood stage through the end of the month and into May as rain totals for the entire month ranged between 5 and 8 inches, or between 150 percent and 200 percent of normal.

Flood in KENOSHA, WISCONSIN
From 09-APR-13 15:19:00 to 30-APR-13 23:59:00 (CST-6)
Location: WHEATLAND
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 1.00K
Reported by: River/Stream Gage

The Fox River at New Munster went into major flood, cresting at 14.5 feet, or 4.5 feet over the flood stage of 10 feet, at 1245 AM CDT on April 20th.The rier remained above flood stage into May.

Flood in OZAUKEE, WISCONSIN
From 10-APR-13 10:19:00 to 14-APR-13 10:21:00 (CST-6)
Location: BARTEL
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 1.00K
Reported by: River/Stream Gage

The Milwaukee River near Cedarburg experienced minor flooding, cresting at 12.44 feet, or 1.44 feet over the flood stage of 11 feet, at 419 AM CDT on April 14th.

Flood in GREEN, WISCONSIN
From 11-APR-13 18:32:00 to 14-APR-13 12:58:00 (CST-6)
Location: BRODHEAD
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 1.00K
Reported by: River/Stream Gage

The Sugar River near Brodhead experienced minor flooding, cresting at 7.02 feet, or 2.02 feet over the flood stage of 5 feet, at 4 AM CDT on April 12th.

Flood in ROCK, WISCONSIN
From 08-APR-13 07:15:00 to 30-APR-13 23:59:00 (CST-6)
Location: AFTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 3.00K
Reported by: River/Stream Gage

The Rock River near Afton experienced moderate flooding, cresting at 11.76 feet, or 2.76 feet over the flood stage of 9 feet, at 10 AM CDT on April 18th. The river remained above flood stage into May.

Flood in JEFFERSON, WISCONSIN
From 11-APR-13 20:15:00 to 30-APR-13 23:59:00 (CST-6)
Location: FT ATKINSON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 3.00K
Reported by: River/Stream Gage

The Rock River near Fort Atkinson experienced major flooding, cresting at 18.12 feet, or 2.12 feet over the flood stage of 16 feet, at 3 AM CDT on April 22nd. The river remained above flood stage into May.

Flood in JEFFERSON, WISCONSIN
From 10-APR-13 11:53:00 to 30-APR-13 23:59:00 (CST-6)
Location: JEFFERSON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 3.00K
Reported by: River/Stream Gage

The Rock River near Jefferson experienced moderate flooding, cresting at 12.31 feet, or 2.31 feet over the flood stage of 10 feet, at 658 AM CDT on April 20th. The river remained above flood stage into May.

Flood in JEFFERSON, WISCONSIN
From 10-APR-13 05:52:00 to 30-APR-13 20:37:00 (CST-6)
Location: AZTALAN
Flood cause: Heavy Rain
Property damage: 3.00K
Crop damage: 1.00K
Reported by: River/Stream Gage

The Crawfish River near Milton experienced minor flooding, cresting at 8.71 feet, or 1.71 feet over the flood stage of 7 feet, at 815 PM CDT on April 20th.

Flood in ROCK, WISCONSIN
From 11-APR-13 00:30:00 to 30-APR-13 23:59:00 (CST-6)
Location: MALLWOOD
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 2.00K
Reported by: River/Stream Gage

The Rock River at Newville experienced major flooding, cresting at 8.51 feet, or 2.01 feet over the flood stage of 6.5 feet, at 1150 PM CDT on April 23rd. The river remained above flood stage into May.

Flood in ROCK, WISCONSIN
From 10-APR-13 11:25:00 to 30-APR-13 23:59:00 (CST-6)
Location: CHARLIE BLUFF
Flood cause: Heavy Rain
Property damage: 8.00K
Crop damage: 2.00K
Reported by: River/Stream Gage

The Rock River at Lake Koshkonong experienced major flooding, cresting at 12.39 feet, or 2.39 feet over the flood stage of 10 feet, at 9 AM CDT on April 23rd. The river remained above flood stage into May.

Flood in SHEBOYGAN, WISCONSIN
From 09-APR-13 17:25:00 to 13-APR-13 05:55:00 (CST-6)
Location: KOHLER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 1.00K
Reported by: River/Stream Gage

The Sheboygan River in Sheboygan experienced moderate flooding, cresting at 10.23 feet, or 2.23 feet over the flood stage of 8 feet, at 925 PM CDT on April 11th.