This study assessed the status of the implementation of the Environmental Impact Assessment (EIA) process in the Libmanan River Flood Control Project, focusing on the planning, design, and execution stages. Using a descriptive-evaluative research design, the study examined the extent to which EIA requirements were integrated into project development and identified strengths and gaps in implementation. Findings revealed a consistently high level of integration across all phases: screening and scoping during planning (M = 4.35), project design (M = 4.28), and monitoring, compliance, and stakeholder participation during execution (M = 4.45). These results indicated that environmental and social considerations were systematically embedded from project conception to implementation, reflecting a holistic and participatory approach. The evaluation of specific environmental mitigation measures further yielded a mean score of 4.33, demonstrating that mitigation strategies were highly integrated, technically sound, and responsive to socio-ecological needs. The project utilized data driven tools, stakeholder consultations, and structured planning to ensure that flood control interventions were environmentally sustainable and socially inclusive. Insights from DPWH project staff, local government officials, community representatives, and external experts affirmed that the EIA process functions not merely as a compliance requirement but as a strategic tool guiding sustainable and resilient flood management. Grounded in relevant theoretical frameworks on risk, resilience, structured adaptation, and socio-ecological systems, the findings underscored the effectiveness of integrating environmental, technical, and social considerations throughout the project cycle. Based on these results, the researcher crafted a policy recommendation aimed at enhancing the integration of Environmental Impact Assessment within the 1st District Engineering Office (DEO) on Libmanan River Projects. The proposed policy emphasized strengthened participatory mechanisms, adaptive management, capacity-building initiatives, and the institutionalization of data-driven monitoring systems to further sustain environmental protection, community resilience, and long-term project effectiveness. Overall, the study demonstrated that comprehensive EIA integration contributes significantly to responsible, transparent, and sustainable infrastructure development.