Duncan MacEwan
Duncan MacEwan, PhD
Founding Partner / 
Principal Economist 

Duncan is the managing partner of ERA and principal economist specializing in agriculture and water resources. Prior to co-founding ERA in 2013, Duncan held a position as a consultant economist with CH2M and as a postdoctoral scholar in the department of Agricultural and Resource Economics at UC Davis. Some of his current projects include water valuation and risk assessments for agribusiness clients, benefit-cost analyses, feasibility studies, and economic analysis to support Groundwater Sustainability Plan development. Duncan is also a primary developer of California’s Statewide Agricultural Production (SWAP) model and has worked with private entities and public agencies to evaluate impacts of local, state, and federal water policies using the SWAP model, and other similar economic modeling frameworks.