As part
of the "new deal" federal funds were spent to create a canal
to send Delta fresh water to Southern California or other
areas outside the Delta region. Certain levees had to
be improved to allow for the water diversions, and to
protect the prime farmland of those islands. Those
levees are still called "project levees". Later, more
improvements were made when the Sacramento Deep Ship Channel
was constructed, and when California built a second canal to
divert more Delta water to other areas of the state.
Many more maps and details found at http://DeltaREvision.com
This page is more focused on maps showing Steamboat Slough
during this timeperiod.
1935 Soil Survey of the Delta region. Click on the map
for a larger version. Contact webmaster if you would
like a full size version. Since soil types do not
generally change, much of the area is the same as it
was when the federal "project levees" were first planned by
the engineers of what became the US Army Corps of Engineers
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reserved
Steamboat
Slough in the Sacramento Delta Region
