| Historically, the Delta had fresh water or less than one
parts chloride per 1000 parts water. All historical studies of
Delta and Suisun Marsh area refer to "1 ppt" as the measurement.
The Delta was all fresh water as shown by the first records of salinity
compiled by a company located in Crocket in the western end of the
Carquinez Straits in 1905.. Since the later 1990's DWR has been
promoting the "X2" standard which results in substantially increasing
the salinity in parts of the Delta to a brackish water level which is
not the natural environment for the Delta according to historical
records. DWR and other government agencies have created reports
based on computer modeling which claim that certain native fish species
need higher salining to survive, and they also claim that crops grown in
the Delta can withstand higher salinity levels.
What DWR doesn't
seem to report (via Delta Plan, ISC, BDCP, Water Plan, etc) is the effect on shallow residential drinking water wells
in the Delta, including the effects from saltwater intruision into the
Delta when the NorCal aquifers are not replenished due to increased
exports of Sacramento River water North of the Delta and around the
Delta. Below are graphics and documents from just a few of the
studies regarding this key topic for the Delta. Click on each
graphic and the full size version will pop up, and the online link to
the original data will show, if found at a website online. Note
that some of the historical records were scanned from the actual
documents that are not found online at DWR or the other government
agencies which first published the data.
The question remains unanswered despite years of
computer modeling, studies, water monitoring and lots of talking heads:
How much fresh water of 1 ppt or less will remain in the Delta once all
the new water diversion projects are up and running? Since the
current documents keep referring to X2, will DWR even answer the
question in the Delta Plan or BDCP?