Emerald Ash Borer Distribution in Iowa (confirmed)

Encyclopedia Article

Map of Iowa showing current distribution of confirmed EAB infestations as of October 21, 2020

Brown circles on the distribution map indicate a 15-mile radius around confirmed discoveries of EAB.  Ash trees within 15 miles of a confirmed EAB site are considered to be at risk of attack and preventive treatments are suggested for healthy, vigorous and valuable trees within this risk zone.  It may be premature to treat ash trees outside these areas.  Click here to learn more about the emerald ash borer.

Where has EAB been found in Iowa? EAB infestations have been confirmed in the following Iowa counties.

Adair – Bridgewater (Mormon Trail Park), Lake Orient Recreational Area (2016); Greenfield Lake (2018) Dubuque – Dubuque (2015), Dyersville (2017) Marion – Maryville (2014), Marion Co. Park (2017)
Adams – Rural area north of Cromwell (2016) Fayette – Oelwein (2017) Marshall – Rural area N of Le Grand (2018), Marshalltown (2018)
Allamakee –New Albin, Lansing, Black Hawk Point, Plough Slough (2010) Floyd – Charles City (2017) Mills – Glenwood (2020)
Appanoose – Moravia (2014) Franklin – Hampton (2019) Monroe – Private property (2014), Albia (2017)
Audubon – Rural Exira (2020) Greene – East of Grand Junction (2017) Montgomery – Rural area NW of Red Oak (2015); rural area north of Villisca (2016)
Benton – Belle Plaine (2017), Newhall (2020) Grundy – Dike (2018) Muscatine – Muscatine (2014), Wiese Slough WMA (2020)
Black Hawk–Waterloo (2014), Deerwood Park (2017) Guthrie – Casey (2020) Page – Clarinda (2018)
Boone – Boone (2014), Ledges State Park (2017) Hamilton – Rural area near Randall (2018), Stratford City Park (2020) Polk – Urbandale, West Des Moines (2015); Des Moines, Mitchellville, Windsor Heights (2016), Johnston (2018), Clive (2019), Ankeny (2020), Altoona (2020)
Bremer–Waverly (2014) Hardin – Eldora (2018) Pottawattamie – Council Bluffs (2018), rural Minden (2019), rural Walnut (2020)
Buchanan – Winthrop (2018) Harrison – Logan, Missouri Valley (2016) Poweshiek – Grinnell (2015), Montezuma (2017)
Buena Vista – Alta (2017) Henry – Mt. Pleasant (2014), Geode State Park (2017) Ringgold – west of Tingley (2017)
Butler – Clarksville (2017) Howard – Cresco (2017) Sac – rural site outside Schaller (2020)
Carroll – Rural area west of Carroll (2018) Iowa – Lake Iowa Park (2016), north of Middle Amana (2017), Randolph Wildlife Management Area (2019) Scott – Davenport (2015), Bettendorf (2016), Scott Co. Park (2017), West Lake Park (2017)
Cass – Rural areas near Massena and Anita (2019), Lake Anita State Park (2020) Jackson – Bellevue (2017), Maquoketa (2020), rural Miles (2020) Shelby – Shelby (2020)
Cedar – Mechanicsville (2013) Jasper – Newton (2014), Rock Creek State Park (2017) Story – Story City (2014), Ames (2018), Hickory Grove Park/Colo (2020)
Cerro Gordo – Mason City (2020) Jefferson – Fairfield (2013) Tama – Rural area north of Le Grand (2018)
Chickasaw – New Hampton (2019) Johnson – Coralville, Iowa City (2016), south of Oxford (2017); Hawkeye Wildlife Management Area, North Liberty (2019) Taylor – Clearfield (2018)
Clarke – Osceola (2016) Jones – Anamosa (2019) Union – Creston (2013)
Clayton – Marquette, Monona (2017) Keokuk – Hedrick (2015) Van Buren – Birmingham (2016)
Clinton – Clinton (2015), De Witt (2019), Syracuse WMA (2020) Lee – Fort Madison (2015) Wapello – Eddyville (2014), Eldon (2017)
Crawford – Denison (2018) Linn – Cedar Rapids (2015), Toddville (2016), Lisbon (2017), Marion (2018), Hiawatha (2019) Warren – Rural Milo (2017)
Dallas – Waukee (2015), rural De Soto (2019) Louisa – Rural area in central part of county (2016), Columbus Junction (2020) Washington – Brighton (2016), Washington (2017)
Davis – Rural area north of Bloomfield (2015) Lucas – Private woodlot (2014), Chariton (2016) Wayne – North of Corydon (2017)
Decatur – Rural area north of Grand River (2017) Madison – Rural site south of Winterset (2017), Winterset (2018), Clanton Creek Rec Area (2019) Webster – Fort Dodge (2020)
Delaware – Edgewood (2018) Mahaska – Eddyville (2014), rural area NW of Oskaloosa (2015) Winneshiek – Decorah (2016)
Des Moines – Burlington (2013)    

 

Last Reviewed: 
October, 2020
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