FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2005

TITLE: USGS 1:24,000 QUARTER-QUAD INDEX

Geodataset Name:         QQDIDX
Geodataset Type:         SHAPE
Geodataset Feature:      POLYGON

GENERAL DESCRIPTION:
This dataset contains the grid for the USGS Quarter Quadrangles for the state of Florida.

DATA SOURCE(S):                      Florida Department of 
                                     Environmental Protection (FDEP)
SCALE OF ORIGINAL SOURCE MAPS:       1 : 12,000
DATE OF AUTOMATION OR SOURCE:        1995-1996
GEODATASET EXTENT:                   State of Florida

FEATURE ATTRIBUTE TABLES
Datafile Name: QQDIDX.DBF

NAME        WIDTH   TYPE      PRECISION
AREA        18      DECIMAL      5                        
PERIMETER   18      DECIMAL      5                        
QQDIDX_      5      DECIMAL                              
QQDIDX_ID    5      DECIMAL                              
QUAD_NAME   40      CHARACTER                             
QUARTER      2      CHARACTER                            
QUAD_NUM     4      DECIMAL                            
NAME        40      CHARACTER                             
DESCRIPT    40      CHARACTER                            

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

ITEM NAME    DESCRIPTION
QUAD_NAME    Name of USGS Quad Sheet
QUARTER      The Quarter of  the USGS Quad Sheet and is as follows:
             NE -- North East Quarter
             NW -- North West Quarter
             SE -- South East Quarter
             SW -- South West Quarter
             
QUAD_NUM     Number of USGS Quad Sheet
NAME         Name of Quarter Quad
DESCRIPT     Based on NAME

USER NOTES:

This grid is to be used by FDEP and all the water management districts as the basis for library tiling schemes. This will ensure spatial consistency with regard to geographic extent of tiled data layers between these agencies. At a meeting held October 10, 1995 it was determined that this grid was to be statewide and include that part of the Gulf of Mexico that is described by the Panhandle and peninsula. The cells would be 3.75 minutes on a side to reflect the USGS "quarter-quad" map series, and have a node every 15 seconds. The projection would be geographic and use the HPGN datum. The metric was to be decimal degrees.

This data has not been transformed using known control points.

FGDL QUALITY ASSURANCE STATUS:

-Reprojected datum HPGN to HPGN.
-Tolerances set to FGDL standards.
-Dropped items XMIN, YMIN, XMAX and YMAX from QQDIDX.PAT
-DESCRIPT item was added based on the item NAME.

REFERENCES:

DATA LINEAGE SUMMARY:

The quarter quad grid was created by Henry Norris using ARC/INFO v.7.0.3 (UNIX, SUN SPARC 20).

* Projectdefine is used here. We need a set of known control points in HPGN geographic so that we can transform the grid to them.

MAP PROJECTION PARAMETERS:

Projection                           ALBERS
Units                                METERS
Datum                                HPGN
Spheroid                             GRS1980
1st standard parallel                24   0  0.000
2nd standard parallel                31  30  0.000
central meridian                    -84   0  0.000
latitude of projection's origin      24   0  0.000 
false easting (meters)               400000.00000
false northing (meters)              0.00000

DATA SOURCES CONTACT(S):

Name:                   Florida Department of Environmental Protection
Abbr.name:              FDEP
Phone:                  904-488-0130
Web site:               http://www.dep.state.fl.us
Ftp site:               ftp://ftp.dep.state.fl.us/pub/gis/data                 
Contact Person:         
         Phone:         727 896-8626

FGDL CONTACT:

Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

Contact FGDL:

      Technical Support:	        http://www.fgdl.org/fgdlfeed.html
      FGDL Frequently Asked Questions:  http://www.fgdl.org/fgdlfaq.html
      FGDL Mailing Lists:		http://www.fgdl.org/fgdl-l.html
      For FGDL Software:                http://www.fgdl.org/software.html