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Beaver Dam City Forester John Neumann confirmed Monday that an invasive beetle that attacks and kills ash trees has reached Beaver Dam.

Emerald ash borer was first confirmed in Dodge County in August 2013, when the tree-killing beetle was found in a trap at Riverside Park in Watertown just inside the Dodge County line. At that time, Dodge County was added to the list of counties under a quarantine to slow spread of the beetle.

The city has had a plan in place to battle ash borer for several years and has budgeted funds as well. Efforts have focused on detection and prevention by diversifying the types of trees planted in the city and gradually culling the number of ash trees in the city. At one point, as many as 40 percent of city-owned trees were ash.

Neuman said the emerald ash borer was confirmed after a resident called to ask about some maple trees in the 100 block of Liberty Street. Neumann went to take a look at the maples and noticed an ash tree with woodpecker damage and other signs of possible ash borer infestation.

He contacted K&B Trees, which has a contract with the city, to remove the city-owned ash tree and to look for emerald ash borer while doing that. Neumann said the presence of the beetles was quickly confirmed.

Dodge County remains under a quarantine and it is illegal to move firewood out of the area, as it is the primary means for the EAB to spread.

Homeowners who would like more information on EAB and the quarantine area, or are interested in determining whether they have an ash tree on their property and information on how they protect it from EAB, should visit or contact the Beaver Dam Parks & Forestry Dept. or phone 887-4623.

Capital Newspapers Assistant Regional Editor