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| Keywords: Upper chute surveys, cleaning and drainage systems.jpg en Contractors for the Sacramento District prepare for concrete placements at the Folsom Dam auxiliary spillway project April 29 2015 in Folsom California Preparations include survey work surface cleaning and installation of groundwater drainage systems underneath black fabric in background The U S Army Corps of Engineers Sacramento District together with the U S Bureau of Reclamation and state and local partners is building the spillway to reduce flood risk throughout the Sacramento region 2015-04-29 https //www flickr com/photos/sacramentodistrict/16712868334 U S Army Corps of Engineers Sacramento District http //mdti net/ MDTI other versions USACE-Sacramento District https //flickr com/photos/52057813 N07/16712868334 2016-01-07 02 51 07 United States Government Work PD-USGov Drainage Uploaded with UploadWizard | ||||
