Crawford County

Wiscon

sin Rive

r

Village of Black Earth

City of Madison

Crystal LakeFish

Lake

Vernon County

Iowa

Wisconsin

Dane County

Sauk County

Iowa CountyGrant County

Columbia County

Richland County

Crawford County

Wisconsin River

Blue River

Bear Creek

Pine River

Knap

p Cree

k

Honey Creek

Mill C

reek

Willow Creek

Black Earth Creek

Otter Creek

Big Green River

Duck Creek

Ash Creek

Rush Creek

Fancy Creek

Flint Creek

Lane Creek

Fennim

ore Fo

rk

Spring Creek

Richland Creek

Millville Creek

Little

Willo

w Cr

eek

Elvers Creek

Soule

s Cree

k Jennings Creek

Clea

r Cree

k

Roxbury Creek

Wilson Creek

Dry Hollow Creek

Dieter Hollow Creek

East

Bran

ch

Mill C

reek

Penn Hollow CreekPleasant Valley Creek

Hell Hollow Creek

Mill Creek

Pine River

Mill Cree

k

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 BarneveldVillage of

Ridgeway

Village of Boaz

Village of Pardeeville

City of Prairie

du ChienVillage 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

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MAP SYMBOLOGY WATERSHED LOCATOR Risk Mapping, Assessment, and Planning (Risk MAP)

RELEASE DATE3/6/2014

HUC-8 Code07070005For 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 MAPLower 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 SUCCESSAn 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 AreaRivers and StreamsCorporate Limits

Major Roads

Base Data

Watershed BoundaryState Boundary

Interstates

Flood Risk Very LowLowMediumHighVery High

Iowa

Illinois

0 2.5 5

Miles

Flood Risk Map:Lower Wisconsin Watershed, 07070005

Areas of Mitigation Interesti Areas of Mitigation Success_̂ Other

Damskj Non-Levee Embankments

pp Other Flood Risk Areas

@ Significant Land Use Change