Multnomah County Will Face Worst Mosquito Season Ever

In preparation for the impending summer season, Portland area residents should stock up on insect repellant. The Multnomah County Health Department has issued a warning, indicating that this year is expected to have one of the worst mosquito seasons ever recorded. The unseasonably warm spring in Portland, with its record-breaking temperatures, has led to the fast expansion of “floodwater” mosquitoes, according to officials from Multnomah County. Mosquito activity is typically at its highest in the summer.

According to Multnomah County’s Vector Control and Code Enforcement Program supervisor Levi Zahn, floodwater mosquitoes have emerged due to the early snowfall that has swollen waterways. The mosquito’s life cycle has been sped up by the warmer temperatures that accompany the climate. Check the tweet below:-

However, it should be noted that the county has designated these insects as “nuisance mosquitoes” that do not constitute a serious concern of virus transmission. Many mosquito species thrive in residential backyards, while others thrive in floodwater and emerge along the Columbia and Willamette Rivers.

Zahn warns locals to be especially vigilant between dawn and dusk when mosquitoes breeding in floodwater are most active. People are also urged to clean out man-made water containers often in their yards to prevent the perpetuation of “container-breeding mosquitoes.” The most efficient methods of self-protection and decreasing mosquito populations include the use of long sleeves, long trousers, and personal repellents.

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Vector Control in Multnomah County, Oregon, plans to use helicopters to drop larvicides on deserted sections of the county between May and August. This treatment is aimed at reducing mosquito populations by killing mosquito larvae. However, if the area continues to see warm and dry weather, mosquito numbers may drop much lower than they did last year.

Jessa Martin

Jessa Martin is an accomplished news writer with a passion for keeping the community informed about the latest events and happenings in Hillsboro and the surrounding areas. With a keen eye for detail and a knack for storytelling, Jessa has become a go-to source for breaking news and in-depth reporting.As a news writer for, Jessa covers a wide range of topics, from local politics and government to community events and human interest stories. Their writing is always informative, insightful, and engaging, offering readers a deeper understanding of the issues that matter most to the people of Hillsboro.

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