Synergistic Geophysical Techniques for Assessing Seepage Pathways in Earthen Levees

The Sacramento River Delta is the second largest river delta in the United States. Many<br>hundreds of miles of earthen levees were built in the early 1800's and were not built to today’s<br>engineering standards. At the time, local earthen materials were used to build the levees resulting in a<br>wide range of materials and related conditions. Therefore, the levees are prone to breaching, failure,<br>and/or other catastrophic events (past events have occurred).