The following is a compilation of maps, diagrams and photos related to the Delta and California water.
These maps and diagrams have been sourced from public documents and public sources. Historical photographs are from the National Archives/Library of Congress and WikiMedia. No known copyright restrictions exist.
Click on a image to view in a carousel. Right-click to download. To view larger, look for the option underneath the map or diagram in the lower right hand corner.
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Placer tailings, Folsom City. Sacramento County, California. 1905. From the USGS
From the USGS: Channel of American River near Folsom City, The lower terraces are of hydraulic tailings first deposited by the river and afterwards partly removed. Sacramento County, California. 1905.
‘Piping four streams from monitors (giants), with aggregate discharge of 2,500 miner’s inches at a hydraulic mine. Material is washed through bedrock cuts to the sluices which are not visible”, from WikiMedia
View of gold miners excavating an eroded bluff with jets of water at a placer mine in Dutch Flat, California, between 1857 and 1870.; from WikiMedia