freeboard Maven May 5, 2020 0 10 « Back to Glossary IndexFreeboard is the term for the height of the physical top of a levee or floodwall above the median design water surface elevation. Related Articles: Groundwater at the Delta Stewardship Council, part 1: Subsidence in the Central Valley and an update on CASGEMGroundwater pumping and subsidence in the Central ValleyGlossary: flood stageYolo Bypass Symposium, part 1: A flood of plans and possibilitiesAdapting to sea level rise and climate change in the San Francisco Bay Area: What can we do?« Back to Glossary Index