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Public Works - Mosquito Control 

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Threat Condition
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THE BUZZ

Volume 5, 14   (Week 28)

July 13, 2006

 
Mosquito Activity (Scale from 0 to 5)
  • Finally, relief from the rain. The city received 0.32 inches of rain last week. Many of the areas that were flooded from the heavy rains over the past two weeks are finally drying up.
  • Mosquito activity remains a 2 for most of the city. We still have some problem areas on the city’s margins where mosquito numbers are significantly higher.
  • Remember, we need your help in keeping your yards free of containers that hold water. This type of mosquito will continue to be our major problem for the city. You must keep your yards and gutters free of water.
Surveillance
  • 10 CDC style light traps were set this week, a total of 1,427 mosquitoes were caught, for an average of 142 per trap. Trap counts decreased slightly from last week.
  • 7 Gravid style traps were set this week, a total of 423 mosquitoes were caught, for an average of 60 per trap. We saw a major increase in gravid trap counts this week.
  • Eight mosquito pools were sent for West Nile Virus (WNV) testing this week. All were negative for WNV.
  • Mosquito breeding this week includes containers (birdbaths, flowerpots, clogged rain gutters and drains, buckets, tarps, etc.), roadside ditches, and deeper ground depressions.
Service Requests
  • We received 2 complaint calls this week. We anticipate calls to increase as container breeding mosquitoes become more of a problem for residents.
Control
  • Crews truck fogged a total of 9,099.7 acres last week. We are continuing to monitor adult mosquito populations and will truck fog when needed.
  • An aerial contractor treated 100 acres of back ditches, standing water, and depressions throughout the city. This was the second of three planned larviciding operations scheduled for the city.
  • Mosquito Spraying information is posted on the Mosquito Spray Hotline at 393-8666.

Aerial Spraying
 

Mosquito Trap Counts

 
City of Portsmouth, Virginia - All rights reserved.

last updated July, 2006