Report Land Transitions and Dust in the San Joaquin Valley By Andrew Ayres, Jaymin Kwon, Joy Collins Jul 20, 2022 Agricultural operations and wind erosion are two of the largest sources of dust in the San Joaquin Valley, and the valley’s air quality may decline with increased farmland fallowing and a warmer, drier climate. This will impact low-income, rural communities first and foremost, but proactive management can help identify high-risk areas and direct funding to cost-effective interventions.