1001 Wrong Maps of the Delta
Delta Reference Maps
4-wrong waterway names
Over the last 10-12 years Department of Water Resources, US
Bureau of Reclamation, Fish & Game and many other agencies have
conducted and published reports about various aspects of the Delta.
Starting in 2003 studies were done by "computer modeling" which means
data was put into a computerized simulation program to make predictions
of the outcome or effect on the Delta from the different alternatives
proposed to revise the Delta. The problem with computer modeling is
that if you enter wrong initial data, the results will also be wrong.
Even worse is when people who don't know the Delta, or the
geographic/names of the islands and waterways, are hired to input the
basic data. When one reviews just the maps that came from the computer
modeling, one has to question if even a basic Delta map is so wrong,
what about all the rest of the data contained it the
For the first example, look at the two maps below,
which have correct Delta island names. Click on this small Delta Island
to compare to the one on the far right.
Or clidk on this pdf
(page 7) for a state/agency-generated delta map to use to compare the
map on the right comes from page of the Flooded Islands Feasibility
Baseline Report of 2005, from which the current 2011 "Franks Track" projects are
see page 24, unless someone edits that page...note the difference?
Again, if the agencies or their
contractors can't even figure out the correct names for the Delta
Islands, why should anyone trust their other data? In case you are
not from the Delta, here a list of the obvious ways the 2005 map is
(1)Pierson District is listed where Ryer Island is located;
(2) Sutter Island is listed where Grand Island is located;
(3) Merritt Island is listed where Sutter Island is located;
(4) New Hope Tract is listed where Pierson District is located;
(5) Clarksburg Tract is listed where Brannen Island is located;
(6) Clarksburg Tract is listed again, in the general correct place;
(7) New Hope Tract is listed again in the correct general
(8) Andrus Island is not listed at all but was included in the modeling
When one reviews the data of the 2005 report, is one
supposed to assume information reported about Pierson District is really
about Ryer Island or about Pierson District, and if so, which Pierson
District location? If you review the impacts to the Clarksburg
Tract which is very close to the Franks Tract project, does the modeling
really mean Brannen Island or as the map shows, Clarksburg Track "south"
to define it from the more northern Clarksburg Track? Or did some
agency rename places in the Delta without notifying the property owners?
Long Point Island in the Suisun Marsh area was renamed Ryer Island by
USGS in 1980 for no apparent reason, so one could assume the same can
happen to to other islands in the Delta. Bottom line: It is
entirely unclear which islands where in the Delta the modeling for the
Flooded Island Feasibility Study applied to!
By the way, you will notice that in the Franks Tract
Project eir/eis document the island names no longer show on the map, but
the fact remains the modeling for which the whole project is based upon
utilized the 2005 base study:
see page 24...note the difference?
here's links to the technical memorandums...http://www.water.ca.gov/frankstract/floodedislands.cfm
Drop the island names and no one will know the difference?
to More Wrong Delta Maps
You can also click on this URS map below to see larger version. One
thing to note is that there are TWO Ryer Islands in the Delta, both
located in Solano County, and while USACE lists both Ryer Islands, URS
often forgets abut the smaller Ryer Island in the Suisun Marsh area.
You will understand how this affects other reports if you continue to
the next pages of Wrong Delta Maps! Below is another map, but the
smaller Ryer is also missing.
||You might want to review
the historical map to the left and the Atwater Survey map above, to get
to know the location of Steamboat Slough and Ryer Island, because many
of the mistakes over the last 10 years relate to this area of the
Northern Delta region