“…Use of natural and quasi‐experimental approaches to identify causal relationships originated in labor economics (LaLonde, ; Card, ) and subsequently spread into other economic fields, including environmental economics (Chay & Greenstone, , ; Fabrizio et al, ). These approaches have been used by water resources economists to characterize water demand (Buck et al, ; Schoengold & Sunding, ; Schoengold et al, ) and to study the welfare and economic impact of water provision (Buck et al, , ; Duflo & Pande, ; Schlenker et al, ). Use of natural and quasi‐experiments to support causal empirical research in sociohydrology is emerging, particularly in data‐scarce regions.…”