The purpose of the project is to conserve 30,850 acre-feet annually of water being lost as seepage from the earthen reaches of the canal. As a part of California’s efforts to reduce dependence on Colorado River water was managed by Metropolitan Water District of Southern California using state funding. The lining project involved installation of concrete lining along approximately 33.2 miles of unlined portions of the canal. The project area is located in Imperial and Riverside Counties several miles to the east and generally parallel to the Salton Sea between the communities of Calipatria on the south and Mecca on the north.
PanGIS, Inc. managed the creation of GIS databases depicting cultural resources within the study area. Digital orthoquadrangles, USGS 7.5-minute quadrangles, detailed CAD files, and other GIS databases were incorporated with the cultural resources database to create maps and graphics. These maps were used by field personnel and for the final report.