Ultra-Low Volume Agricultural Aerial Treatment Maps

The maps below show the boundaries of areas where the District will conduct aerial spraying in agricultural areas to control adult mosquitoes due to either high adult mosquito abundance or West Nile virus activity. While the areas shown below are targeted by our aircraft via GPS and wind sensing systems to account for drift, the airplane may make wide turns outside the areas shown on the map. See the Spraying Update page for the latest information on treatment locations and times, and the Spraying Frequently Asked Questions page for common questions and answers.

No spraying has been scheduled for 2018. This map will be updated if agricultural aerial spraying is scheduled.