Suggested citation and version history for: McCrink, T.P., Pridmore, C.L., Tinsley, J.C., Sickler, R.R., Brandenberg, S.J., and Stewart, J.P., 2011, Liquefaction and other ground failures in Imperial County, California, from the April 4, 2010, El Mayor- Cucapah earthquake: U.S. Geological Survey Open-File Report 2011-1071 and California Geological Survey Special Report 220, 94 p. pamphlet, 1 pl., scale 1:51,440. [http://pubs.usgs.gov/of/2011/1071/] [http://conservation.ca.gov/cgs] Version 1.0 July 15, 2011 Made improvements in page layout Used higher-resolution graphics in places Added author affiliations June 30, 2011 Initial release online at http://pubs.usgs.gov/of/2011/1071/