River flooding was prevalent across southern WI during the month of September after receiving 12 to 20 inches of rain from August 16th to September 5th. Additional rains throughout the remainder of the month prolonged the flooding. Moderate to major flood stage was reached on the Baraboo and Fox Rivers of central WI, and the Rock River in Jefferson and Rock Counties. Flooding continued into early September on sections of the isthmus in Madison due the high lake levels of Mendota and Monona.

Flood in GREEN LAKE, WISCONSIN
From 05-SEP-18 12:00:00 to 28-SEP-18 23:59:00 (CST-6)
Location: PRINCETON
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Fox River reached moderate flood stage, cresting at 11.31 feet the morning of September 11th. Floodwaters affect Jefferson St. and the north end of Mechanic St. in Princeton. Floodwaters are in the backyards of some homes and businesses along S. Farmer St., Short St., W. Water St., and Mechanic St.

Flood in GREEN LAKE, WISCONSIN
From 01-SEP-18 00:00:00 to 28-SEP-18 23:59:00 (CST-6)
Location: BERLIN
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Fox River reached moderate flood stage, cresting at 15.18 feet the morning of September 12th. Riverside and Webster Parks are flooded in Berlin. Some homes along Webster St. are affected by floodwaters.

Flood in COLUMBIA, WISCONSIN
From 01-SEP-18 00:00:00 to 12-SEP-18 23:59:00 (CST-6)
Location: PORTAGE ARPT
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 2.00K
Reported by: Emergency Manager

The major flooding of the Baraboo River flooded a portion of a trailer rental business, an auto auction business, and a road wayside park, near the intersection of highway 33 and I-90/94. Interstate 90/94 and Interstate 39 were sandbagged due to the high waters of the Baraboo River, which flows underneath the highways. Tritz Rd. was flooded and closed at both ends along with other secondary roads in the area. Portions of Highway 127 were closed due to flooding from the intersection of highway 127 and 16 near WI Dells, to the intersection of 127 and 16 near the Portage airport.
Water is up to the Manchester St. Bridge in Baraboo.

Flood in MARQUETTE, WISCONSIN
From 04-SEP-18 02:00:00 to 12-SEP-18 18:00:00 (CST-6)
Location: PACKWAUKEE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway D, which crosses Buffalo Lake and connects two sections of Packwaukee, was closed as a portion of the road was washed out by several inches of rain. This required residents to travel 1 hour around the lake to reach the other section of Packwaukee.

Flood in JEFFERSON, WISCONSIN
From 01-SEP-18 00:00:00 to 17-SEP-18 06:16:00 (CST-6)
Location: HUBBLETON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 1.00K
Reported by: Emergency Manager

The Crawfish River reached minor flood stage at the end of August, and crested at 8.62 feet the morning of September 8th. There was widespread flooding of lowland and agricultural land, and the flooding of roads in Riverbend Campground about 5 miles upstream of Milford.

Flood in DANE, WISCONSIN
From 01-SEP-18 00:00:00 to 06-SEP-18 15:30:00 (CST-6)
Location: CAMP RANDALL STADIUM
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Sections of the isthmus in Madison, including many streets,  experienced prolonged flooding due to record high water levels on Lake Mendota and Lake Monona. Much of the flooding was near the Yahara River which connects Lake Mendota to Lake Monona. Additional flooding occurred in lakeshore areas of Lake Mendota, Lake Monona, and Lake Waubesa. Thousands of sandbags were deployed to prevent flood damages. Streets, bike paths, parks, boat launches and piers were closed in the isthmus and other areas in the Yahara Chain of Lakes.

Flood in JEFFERSON, WISCONSIN
From 04-SEP-18 14:00:00 to 28-SEP-18 07:00:00 (CST-6)
Location: FT ATKINSON
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Rock River at Lake Koshkonong reached major flood stage, cresting at 11.63 feet the afternoon of September 11th. There was widespread flooding of lakeside homes and roads in the Lake Koshkonong area, including Veterans Lane, Blackhawk Island Rd., Oxbow Bend Road, and Lamp Rd.  Lake Koshkonong merged with Mud Lake.

Flood in ROCK, WISCONSIN
From 01-SEP-18 11:00:00 to 30-SEP-18 23:59:00 (CST-6)
Location: (JVL)ROCK CO ARPT JA
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Rock River at Afton reached moderate flood stage, cresting at 11.18 feet during the early evening on September 11th. Floodwaters affected Riverside Park and South River Road in Janesville, in addition to  widespread lowland and agricultural flooding in the Afton and Janesville areas. Floodwaters affected a home on South Christian Road on the east side of the river in the Afton area. This section of the river continued to flood into early October but at minor flood stage.

Flood in ROCK, WISCONSIN
From 05-SEP-18 12:00:00 to 25-SEP-18 23:00:00 (CST-6)
Location: MALLWOOD
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Rock River at Newville reached moderate flood stage, cresting at 7.79 feet during the evening of September 11th. 	Floodwaters surround some homes near East Mallwood Dr. and expands into some yards and roads on the east side of Newville. Floodwaters affect a riverside restaurant and its parking lot on the south side of the river. Dallman Park is partially flooded at Charley Bluff on the SE side of Lake Koshkonong.

Flood in JEFFERSON, WISCONSIN
From 05-SEP-18 06:00:00 to 23-SEP-18 13:00:00 (CST-6)
Location: FT ATKINSON
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Rock River at Fort Atkinson reached moderate flood stage, cresting at 17.31 feet the evening of September 11th. Numerous roads are flooded and closed in the Fort Atkinson area, including Sinnissippi Dr. in Rock River Park, Bark River Rd. from Kutz Road to Rock River Rd., North Shore Rd., and Ralph Rd.  Floodwaters surround a few homes and businesses close to the river at the end of Veterans Lane near the intersection of Highway 106 and Blackhawk Island Rd. Floodwaters are in the backyards of some homes on Rogers St. The river walk in downtown Fort Atkinson is flooded and closed.

Flood in LAFAYETTE, WISCONSIN
From 05-SEP-18 21:00:00 to 07-SEP-18 05:00:00 (CST-6)
Location: YELLOWSTONE LAKE STATE PARK
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The east branch of the Pecatonica River near Blanchardville reached minor flood stage, cresting at 12.53 feet. Floodwaters in Blanchardville mostly filled McKellar Park including the tennis courts and football field. A small portion of highway H was flooded.

Flood in ROCK, WISCONSIN
From 03-SEP-18 23:35:00 to 09-SEP-18 19:00:00 (CST-6)
Location: AVON
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Sugar River reached minor flood stage, cresting at 6.6 feet. Some roads are flooded in the Avon Township. There is flooding in Sugar River Park.

Flood in WAUKESHA, WISCONSIN
From 05-SEP-18 12:00:00 to 07-SEP-18 16:00:00 (CST-6)
Location: DOWNTOWN WAUKESHA
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Fox River reached minor flood stage, cresting at 6.69 feet during the early afternoon on September 5th. Floodwaters are over the banks in Frame Park. About one half mile south of downtown Waukesha, water is 2-3 feet deep and covering much of the
backyards of 6 or 7 homes in the Bethesda Court area of the Riverside Park neighborhood.

Flood in JEFFERSON, WISCONSIN
From 03-SEP-18 20:00:00 to 21-SEP-18 05:00:00 (CST-6)
Location: JEFFERSON
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Rock River at Jefferson reached moderate flood stage, cresting at 11.72 feet the afternoon of September 8th. Floodwaters affect some low lying residences and businesses in Jefferson. Shallow floodwaters at the intersection of Main St. and E. Dane St., and nearby S. Center Ave. Riverview Drive near the wastewater plant is flooded and closed. Floodwaters affect portions of Highway K between Jefferson and Fort Atkinson.

Flood in MARQUETTE, WISCONSIN
From 01-SEP-18 00:00:00 to 12-SEP-18 12:00:00 (CST-6)
Location: MONTELLO
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Montello River flooded portions of Montello as it flowed out of Lake Montello. Major flooding occurred and the Main St. bridge was closed due to the high water of the river impacting the bridge. Approximately, 150 homes and businesses were flooded. Much of the flooding occurred on or near Montello St., Island Dr., Park St., Main St., and portions of Cass St. The first week of school was delayed due to the transportation limitations.

Flood in OZAUKEE, WISCONSIN
From 01-SEP-18 00:00:00 to 03-SEP-18 22:00:00 (CST-6)
Location: THIENSVILLE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Milwaukee River crested at minor flood stage at 12.2 feet during the early afternoon of August 29th, but continued flooding into the evening of September 3rd. Floodwaters spread into the backyards of homes in the Thiensville area. Water is over Elm St., Green Bay Rd., and N. Cedarburg Rd., and into Thiensville Village Park. Water is near some homes along Island Drive and Shoreland Parkway in the Mequon area. There is general lowland flooding in the Cedarburg and Thiensville areas.

Flood in SAUK, WISCONSIN
From 01-SEP-18 00:00:00 to 12-SEP-18 23:00:00 (CST-6)
Location: LA VALLE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 100.00K
Reported by: Emergency Manager

Flood levels were quickly rising on the lower Baraboo River basin and falling in the upper portions of the river basin to begin September. The river crested at moderate flood stage in West Baraboo the morning of September 1st, while the river crested at major flood stage at Baraboo the morning of September 2nd. A new round of 5-9 inches of rain over the upper portion of the Baraboo River basin then resulted in another round of moderate to major flood stage on the river. La Valle crested at moderate flood stage the early morning of September 5th; Reedsburg crested at major flood stage the afternoon of September 5th; Rock Springs crested at major flood stage the morning of September 6th; North Freedom crested the afternoon of September 6th; West Baraboo crested at moderate flood stage the morning of September 7th; Baraboo crested at major flood stage the evening of September 7th. The Baraboo River gradually fell below minor flood stage during the 2nd week of September. Many state and county highways, and bridges, were closed in the communities near and along the Baraboo River. Many homes and businesses sustained minor flood damage in these communities. Thousands of acres of agricultural land were flooded.