Elkhorn Slough contains the 3rd largest extent of salt marsh in California and supports extraordinary biodiversity. Nearly 50,000 tourists visit every year to birdwatch, spot the charismatic sea otters, and kayak on the slough’s vibrant waters. The iconic Highway 1 crosses directly over the mouth of the slough and is vulnerable to flooding at several points where the highway traverses the wetlands. This low-lying area will experience rising sea levels and possibly increased storms causing more