ESA PWA is a leader in innovative approaches to complex water resources problems for clients throughout the Western U.S. and abroad. Our work integrates rigorous science with practical engineering solutions to address a range of problems affecting environments from the headwaters to the coast. Many of our projects have been successfully constructed restoring life and healthy function to degraded streams, rivers, wetlands, tidal inlets and beaches to create ecologic, economic, flood protection and recreational benefits for the environment and society as a whole.