In 2010, the Deepwater Horizon (DWH) oil spill released 3.19 million barrels of oil into the northern Gulf of America, severely impacting wetlands, coastal, and nearshore habitats (WCNH). Immediate response actions often exacerbated these impacts in an attempt to curb long-term oiling and remediate likely future ecosystem impacts. The negative effects were substantial in coastal Louisiana where heavy, persistent WCNH oiling was readily and repeatedly observed. The productive Louisiana WCNH support a wealth of ecologically, commercially, and recreationally important fish and water column invertebrates (FWCI). The DWH oil spill severely injured FWCI, leading to lethal and sublethal effects (e.g. decreased growth and reproduction), causing lost future productivity. As a result of the ecosystem-level injury, the DWH Trustees planned and are implementing a complex, integrated ecosystem approach to restore WCNH and other injured natural resources. The DWH programmatic restoration plan identified WCNH restoration to indirectly help restore FWCI relying on WCNH or benefitting from its productivity transferred to nearshore environs. Here, we discuss ongoing data collection, application, and synthesis efforts focusing on Louisiana monitoring and adaptive management (MAM) activities associated with quantifying FWCI benefits of WCNH restoration. Our current efforts take a holistic, ecosystem approach starting with outcome-focused construction of WCNH restoration projects. Restoration project-specific MAM complements additional monitoring and data collection associated with independent MAM projects; both are further complemented by existing monitoring data. Synthesis of these three data sources will be applied to evaluate restoration success and inform future WCNH restoration design. Further, data collection will support future broader syntheses that will evaluate and quantify project-specific and regional WCNH restoration benefits to FWCI via multiple lines of evidence.