General Plan Update 2000


Welcome to the Gateway Cities General Plan Update 2000.

This map and its associated digital files together are an attempt to disseminate the most recent information available for regional planning purposes -- and in GIS-compatible form.

This update to the SCAG Access Project General Plan Map is on this CD-ROM as an ArcView GIS Project [GP2000.apr].

The opening screen shows an ArcView "LAYOUT" window which can be used to compose presentation quality maps.

The text can be changed and moved on the page by simply selecting the text item to modify.

The Legend which appears on the Layout page is actually a set of graphic symbols and text which have been grouped together.  It can be sized or moved just like all elements of the Layout.

The Layout may be enhanced by adding a scale (all map units are in State Plane NAD 83), north arrow and additional text.

Another window in the project is the Map View.  This window allows complete interactive view and query of the map components -- the members of the Gateway Cities Council of Goverments.  The detailed land use areas of each jurisdiction can be either "turned on or turned off" by checking the box next to the city name.

From the View Menu,  the Themes On and Themes Off items can be used to turn all the city maps on or off at the same time.

Just Highlight the appropriate action item.


We can choose to view a subset of the Gateway Cities by turning on only one or more individual cities -- in this case the City of Lakewood.  And by using the Zoom to Active Theme button, we can zoom into the Lakewood area.


We can even zoom in further by using the Zoom Tool and drawing a zoom-box with the cursor.

Here you can see the level of detail available from those cities that have implemented Geographic Information Systems locally.  Here the City of Lakewood has provided General Plan data at the parcel level -- with an extremely accurate basemap.  For our COG General Plan, those parcels have been "dissolved" into general plan polygons for both practical and legal reasons.

Signal Hill does not have a digital mapping system but provided hard copy maps of the city.  We used these data to update and correct the original land use categories in the ACCESS Project maps.

In all cases, the Legend categories are the same -- generalized from those of the individual COG members to a level of detail appropriate for regional planning purposes.

The numeric codes used for the Gateway GP Categories and their descriptive equivalents are shown here (as they are in each theme legend).


Inconsistencies abound within the region, however, and what qualifies as "Medium Density Residential" for one jurisdiction may fall into another for another city or the region.  You are encouraged to look at the Excel Spreadsheet on the CD for an attempt to compile the range of definitions used in residential land use categories amongst the member cities.

The GP2000.apr project contains digital files for each member of the COG in ArcView Shapefile format. Each city was asked to provide the latest General Plan information possible for their area and were given the opportunity to review the draft General Plan Map for their jurisdiction.   Data quality varies a great deal from cities with extremely precise locations with quality checked attribute data to those which sent data in B/W map form with little explanation.  (And some jurisdictions did not participate at all -- in which case the original SCAG ACCESS data were used by default.)

Obviously those cities who are actively involved in building and maintaining GIS mapping capabilities within their organizations were able to provide high-quality data in a timely manner.  Hopefully the next update will see an  even greater number of organizations using this technology.

A Current Version of this Web Page and other Update Information
can be found at

For Additional Information Contact:
Dr. Frank Gossette
Professor of Geography
California State University, Long Beach