Annual controlled burn set for Thursday at Sweetwater Wetlands

Pima County residents may see smoke Thursday, when Tucson Water and the Tucson Fire Department will hold a controlled burn at Sweetwater Wetlands as part of the city utility’s Mosquito Abatement Program. 

The controlled blaze will address mosquito and invasive
vegetation problems in the area, as well as provide training for
wildland firefighters.

The area, near Interstate 10 and West Prince Road, will be closed to the public beginning at 8 a.m. on Thursday, and will reopen on Nov. 9.

The two departments have been collaborating on the annual burn project since 1999. The planned fire aids the anti-mosquito effort by removing dead vegetation. The dead plants protect the aquatic insect in the larvae stage, and burning out the vegetation makes low-grade larvicide more effective, officials said.

The burn manages other invasive plant species in the area, and provides a training opportunity for regional wildland firefighters. This year’s burn was strategically scheduled to allow for the regeneration of native habitats in time for the winter migratory bird season.

The controlled burn is planned for optimal weather conditions, with prevailing winds expected to facilitate safe operations. Residents in nearby areas may notice smoke, light ash, and the smell of burning vegetation. Those sensitive to smoke are advised to take precautions or avoid the vicinity. Residual smoke and odors may linger for 1–2 days after the burn.  

Sweetwater Wetlands is located at 2511 W. Sweetwater Dr., west of Prince and I-10.

More information can be found on the city’s website.