Crawford County Wisconsin River Village of Black Earth City of Madison Crystal Lake Fish Lake Vernon County Iowa Wisconsin Dane County Sauk County Iowa County Grant County Columbia County Richland County Crawford County Wisconsin River Blue River Bear Creek Pine River Knapp Creek Honey Creek Mill Creek Willow Creek Black Earth Creek Otter Creek Big Green River Duck Creek Ash Creek Rush Creek Fancy Creek Flint Creek Lane Creek Fennimore Fork Spring Creek Richland Creek Millville Creek Little Willow Creek Elvers Creek Soules Creek Jennings Creek Clear Creek Roxbury Creek Wilson Creek Dry Hollow Creek Dieter Hollow Creek East Branch Mill Creek Penn Hollow Creek Pleasant Valley Creek Hell Hollow Creek Mill Creek Pine River Mill Creek Otter Creek § ¨ ¦ 14 § ¨ ¦ 39 § ¨ ¦ 51 § ¨ ¦ 61 § ¨ ¦ 12 § ¨ ¦ 18 § ¨ ¦ 14 § ¨ ¦ 12 § ¨ ¦ 18 § ¨ ¦ 61 § ¨ ¦ 18 City of Richland Center Village of Wauzeka Village of Avoca City of Lodi City of Boscobel Village of Poynette Village of Rio Village of Sauk City Village of Mazomanie Village of Wyocena Village of Prairie du Sac Village of Arena Village of Spring Green Village of Cross Plains Village of Merrimac Village of Highland Village of Cambria Village of Plain Village of Muscoda Village of Lone Rock Village of Dane Village of Blue River Village of Mount Horeb Village of Barneveld Village of Ridgeway Village of Boaz Village of Pardeeville City of Prairie du Chien Village of Montfort Village of Yuba City of Middleton City of Fennimore Village of Woodman City of Dodgeville Village of Lime Ridge Village of Arlington Village of Blue Mounds Village of Friesland Wisconsin 07070003 07090003 07090001 07090002 04030201 07060003 07060001 07070006 07090004 07070004 07070005 MAP SYMBOLOGY WATERSHED LOCATOR Risk Mapping, Assessment, and Planning (Risk MAP) RELEASE DATE 3/6/2014 HUC-8 Code 07070005 For more information of data used for this non-regulatory map, please consult the Lower Wisconsin Watershed, USA Flood Risk Database and Flood Risk Report. FRM FLOOD RISK MAP Lower Wisconsin Watershed, USA Infrastructure is being destroyed by severe flooding throughout the county. Road flooding prevents access for fire and medical emergencies, leads to extensive road damages and extends road closures. Recovery is delayed in the impacted areas. On a positive note, many people are elevating buildings to reduce their property damages. FLOOD RISK AREAS AREA OF MITIGATION SUCCESS An earthen berm was constructed in 2011 on the west side of the Village of Avoca as flood protection from Morrey Creek. This project was deemed the most viable method to better protect the community from repeated flooding that has hit the area. During the June 2008 flooding event, half the Village (about 300 homes and businesses) was underwater and the sanitary sewer system was overloaded. This resulted in the entire community being evacuated and damage was reported at more than $1 million. While the completion of this project does not guarantee flooding will not occur in the future, Avoca is better able to protect its residents with these recent improvements. AREA OF MITIGATION SUCCESS An earthen berm was removed in August 2012 allowing Black Earth Creek to return back to its original meandering channel. The old and deteriorating Mazomanie dam was removed the prior year. This is part of a larger effort to improve water quality and habitat in the Black Earth Creek watershed and create additional recreational opportunities through creation of trails and with increased conservation efforts to protect this world class trout stream from runoff. FLOOD RISK AREAS There is the customary concern for development in low lying areas. That concern is being surpassed by how frequent flooding outside the mapped floodplain area is occurring throughout the county. In addition, there is concern that the Pine River has shifted its channel due to man-made and natural events. Flood Data Restudy Area Rivers and Streams Corporate Limits Major Roads Base Data Watershed Boundary State Boundary Interstates Flood Risk Very Low Low Medium High Very High Iowa Illinois 0 2.5 5 Miles Flood Risk Map: Lower Wisconsin Watershed, 07070005 Areas of Mitigation Interest i Areas of Mitigation Success ^ _ Other Dams k j Non-Levee Embankments p p Other Flood Risk Areas @ Significant Land Use Change