Mississipp i River

Illinois River

Wabash River

Ka

s k askia

Ri ve

r

Ohio Ri v er

LowerRock

UpperSangamon

LowerFox

LowerWabash

DesPlaines

Cache

UpperFox

Saline

LittleWabash

Chicago

MiddleWabash-Busseron

Stark

Mc Donough

ShelbyMontgomeryMacoupin

Fayette

Jasper

Bond

Richland

WayneEdwardsWashington

Hamilton

PopeJohnson

Massac

Cahokia-Joachim

Spoon

Mackinaw

Vermilion

Sugar

LakeMichigan

Flint-Henderson

Peruque-Piasa

South ForkSangamon

Copperas-Duck

LowerKaskaskia

BigMuddy

Skillet

Embarras

LittleCalumet-Galien

Shoal

UpperMississippi-Cape

Girardeau

LowerOhio

UpperIllinois

Iroquois

Highland-Pigeon

Salt

UpperKaskaskia

Pecatonica

Bear-Wyaconda

Macoupin

LowerSangamon

Kankakee

La Moine

Apple-Plum

LowerIllinois-LakeChautauqua

MiddleKaskaskia

LowerOhio-Bay

Green

Vermilion

MiddleRock

The Sny LowerIllinois

MiddleWabash-Little

Vermilion

LowerIllinois-Senachwine

Lake

Jo Daviess StephensonLake

Mc HenryWinnebago Boone

OgleCarroll

Kane

De Kalb

Whiteside Lee

RockIsland

KendallLa Salle

Henry Bureau Grundy

Mercer PutnamKankakee

KnoxMarshall

Livingston

Henderson

Warren

Iroquois

Ford

Peoria Woodford

Mc LeanTazewellFulton

Hancock

VermilionChampaignLogan

Schuyler

Piatt

De WittAdams

BrownMacon

Sangamon EdgarDouglasMorgan

Pike ChristianMoultrieScott

Coles

Greene ClarkCalhounCumberland

Jersey Effingham

Crawford

Madison

Clay

Lawrence

MarionClintonWabash

Jefferson

WhitePerry

Franklin

Jackson SalineWilliamson

HardinUnion

PulaskiAlexander

St.Clair

Monroe

Gallatin

Randolph

Cook

Du Page

Will

Mason

MenardCass

State Boundaries

Rivers

HUC-8 SubbasinsDiscovered / In Progress

Not Discovered

CountiesDigital / In Progress

Non Digital

County Digital FIRM &Watershed Discovery Status

Date: 9/19/20180 20 40 6010

Miles±

Indiana

Kentucky

Missouri

ISWS CHAMP

Iowa

Wisconsin

Illinois