Environmental Restoration and Management of the Tres Rios Demonstration Constructed Wetland Project: Mosquito Monitoring, Control and Management Efforts

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by Roland Wass,

Document Type: Proceeding Paper

Part of: WRPMD'99: Preparing for the 21st Century

Abstract: (No paper) The Tres Rios Demonstration Constructed Wetland Project in Phoenix, Arizona, is providing valuable information on the role of constructed wetlands in ecosystem restoration, flood control, and water supply projects. It appears that it may indeed become a central component to the Corps of Engineers' Tres Rios ecorestoration project currently under study. One common management challenge of constructed wetlands is vector control. This paper describes the ongoing timeline of breeding, monitoring, control, and management efforts at the demonstration project. The project consists of 12 acres of treatment wetlands configured into 3 distinct sites. As part of developing design and operational parameters necessary to design a full-scale system of approximately 324 ha (800 acres), adult and larval mosquito populations in and around the demonstration facilities have been monitored. The first larvae appeared 6 months after the systems began receiving wastewater and have fluctuated in number with respect to season, vegetation density, and treatment effectiveness. Control of breeding within the systems is sought using wetland basin design and operation criteria, vegetation management, biological agents, and larvicides derived from bacteria.

Subject Headings: Project management | Wetlands (fresh water) | Ecological restoration | Building design | Vegetation | Aquatic habitats | Floods | Information management | Arizona | North America | United States | Phoenix

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