Delta Levee Vulnerability Study


This project developed an index of the vulnerability of levees in the Sacramento-San Joaquin Delta. This involved the development of:

1) an Accommodation Space Index, to calculate that space in the Delta that lies below sea level and is filled neither with sediment nor water; and

2) a Levee Force index, a proxy for the cumulative forces that can cause levee failure.

This project showed that the Levee Force Index increases significantly over the next 50 years, demonstrating regional increases in the potential for island flooding.

Additionally, there is a two-in-three chance that 100-year recurrence interval floods or earthquakes will cause catastrophic flooding and significant change in the Delta by 2050.