Examining WEF nexus-integration in 25 years of legislative documents for the Salton Sea region undergoing profound environmental change

The water–energy–food (WEF) nexus provides a framework for understanding how actions in one sector can influence outcomes in the others, often in complex and unintended ways. Traditional sector-specific policies frequently overlook the trade-offs and synergies between water, energy, and food systems. This study builds on previous policy analyses by examining the evolution of WEF nexus-integration in legislative documents submitted to the California State Legislature over a 25-year period for the Salton Sea region—an area where WEF sectors drive the local economy but face competing interests and significant environmental change. Salton Sea-Focused documents were analyzed using qualitative content analysis in NVivo , followed by inferential statistical techniques implemented in SPSS. Findings reveal that a high degree of WEF integration is not necessarily predictive of policy adoption. Some proposals demonstrated “gold-tier” integration, encompassing actionable and meaningful measures across all three sectors, yet failed to become law. Instead, the most successful policies were reactive, addressing environmental threats to food production and prioritizing water–food (WF) synergies. Over time, shifts from WF to water–energy (WE) synergies reflected the non-linear nature of reactive policy-making, even though not all of them were enacted into law (chaptered). We propose that future successful policy-making in the region will likely be grounded in community-led priorities, particularly public health concerns informed by scientific evidence. This approach furthers the historical pattern where science had identified ecological damage, which then shaped conservation-finance legislation aligned with the dominant sectoral synergy of the time—historically, WF, while also accounting for the complex role of energy within the nexus to support enduring, sustainable development. Other locations facing profound environmental change may look to the evolution of policy in this region for lessons on trade-offs between WEF sectoral synergies and reactive, non-linear policy-making.