i12 Levee Breaks Historic

Consequently, it primarily consists of levee failures in the Delta, plus additional levee failures mapped by the State Office of Emergency Services for the 1983, 1986, 1995, and 1997 floods throughout the Central Valley. Dataset was assembled over many years by Joel Dudas from DWR, first while in the Delta Levees Program, and later in the Division of Engineering/Geodetic Branch.

Various primary sources were utilized, including: 1) a Valley-wide set put together by FEMA, the Corps, & state OES, using the contracting services of Montgomery Watson Associates, for the 1983, 1986, 1995, and 1997 floods. 2) An older map from the early 1990's that was developed by Carl Hauge when he was a part of DWR's Central District that showed Delta levee breaks up until 1986. 3) A file that belonged to DWR Delta Levees (originally compiled when Delta Levees was part of Central District) by Ron Landingham and stored on Bernoulli disks. 4) J. Dudas observations while at DWR up until 2017.