A Look at the Delta through the years and the latest attempt to mess with Nature or Revise the Delta!

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Issue:  Elevations of Delta Islands-Fact vs. Fiction
  The Bay Delta Conservation Plan and DSC-Delta Plan often refer to the elevations of the lands of the Delta.  The problem is that in many, many important instances the elevations depicted on the maps are WRONG. LIDAR and other elevation mapping processes were utilized to ESTIMATE elevations in the Delta.  On-the-ground actual physial elevation surveys and records from the landowners and past government studies show different levels than what is reported, even in the latest BDCP and DSC Delta Plan.  Since both planning processes indicate restoration decisions will be based on land elevations, this is a very important issue for Delta farmers and other land owners.  It does not cost that much to have elevations determined, and there are actually some great websites that give an indication of actual elevations, as opposed to the misleading and false data provided by BDCP/DSC/DRMS documentation.  This page provides some of the maps and documents regarding elevations within the Delta region.  In addition, specific examples will be provided showing the descrepence between the DWR-generated elevation maps and on-the-ground reality.
  
From 1978 to 1982 extensive surveys of the Sacramento San Joaquin Delta region were conducted by USGS.  Above is one of the maps.  Click on the map to see the full version.  Elevations of most Delta islands have NOT changed since the survey was done, unless the island owners were planning to use the islands for In-Delta water storage, such as is planned for Webb Tract and Bacon Island.
The map to the right (click for full size) shows the LOWEST surface elevations for each of the Delta Islands studied.  That does not mean the whole island was that elevation.  Keep the map in mind as you study the latest elevation maps provided by BDCP and DSC below











Issues/elevations/Elevation2001.pdf
Issues/elevations/Elevation-dpc2011.pdf
Issues/elevations/Elevation-dwr-urs-2007.pdf

























Delta Flood Protection Program












 














Issues/elevations/NorthDeltaRestorationMap_Sept_2009.sflb.ashx
















   
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Compiled by Delta citizens and Delta Voices Last Modified :01/15/14 04:34 PM Copyright 2009-2013 ,