FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: FLORIDA DIGITAL ELEVATION MODEL (DEM) 5-METER CELL SIZE - ELEVATION UNITS FEET 

Geodataset Name:       FLIDAR_FWC_FT
Geodataset Type:       RASTER
Geodataset Feature:    5-METER CELL
Feature Count:         170
GENERAL DESCRIPTION:
This data set represents a five meter cell size Digital Elevation Model (DEM) with elevation units expressed in feet. The DEM was created by mosaicking a DEM sourced from the Florida Fish & Wildlife Conservation Commission (FWC) with a DEM created from the coastal Lidar data sourced from the NOAA Coastal Services Center. During the mosaic, the Lidar raster was specified as priority, which had the effect of masking FWC data wherever Lidar data was present. After the mosaic the DEM elevation values were converted from meters to feet. The vertical datum is NAVD88, meters, and the projection is Albers Equal Area Conic, meters. 
DATA SOURCE(S):                    University of Florida GeoPlan Center
SCALE OF ORIGINAL SOURCE MAPS:     Varies
GEODATASET EXTENT:                 State of Florida

PUBLICATION DATE:                  201208
TIME PERIOD OF CONTENT:            2010
DOWNLOAD LINK:                     http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES: 

Datafile Name: FLIDAR_FWC_FT
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
Value
4 Integer
Count
8 Double

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item

Item Description





OBJECTID

Internal feature number.
















Value

Elevation in feet
















Count

Count of cells that have specified value for elevation in VALUE field




























USER NOTES:








This raster is presented "As Is", having undergone minimal quality assurance and 
control.  Any errors or discrepancies are a function of the source data and should 
be treated as such. The University of Florida GeoPlan Center makes no warranties, 
guaranties or representations as to the truth, accuracy or completeness of the data 
provided by the data sources. The University of Florida GeoPlan Center makes no 
representations or warranties about the quality or suitability of the materials, either 
expressly or implied, including but not limited to any implied warranties of 
merchantability, fitness for a particular purpose, or non-infringement. The University 
of Florida GeoPlan Center shall not be liable for any damages suffered as a result of 
using, modifying, contributing or distributing the materials.













This data is provided 'as is' by GeoPlan and is complete to our
knowledge.













GeoPlan relied on the integrity of the attribute information within
the original data.

























The data was created to serve as base information for use in GIS systems 
for a variety of planning and analytical purposes.















This data is provided 'as is' and its horizontal positional accuracy 
has not been verified by GeoPlan















This data is provided 'as is' and its vertical positional accuracy has 
not been verified by GeoPlan















None














The Florida Geographic Data Library is a collection of Geospatial Data
compiled by the University of Florida GeoPlan Center with support from
the Florida Department of Transportation. GIS data available in FGDL is
collected from various state, federal, and other agencies (data sources)
who are data stewards, producers, or publishers. The data available in
FGDL may not be the most current version of the data offered by the
data source. University of Florida GeoPlan Center makes no guarantees
about the currentness of the data and suggests that data users check
with the data source to see if more recent versions of the data exist.

Furthermore, the GIS data available in the FGDL are provided 'as is'.
The University of Florida GeoPlan Center makes no warranties, guaranties
or representations as to the truth, accuracy or completeness of the data
provided by the data sources. The University of Florida GeoPlan Center
makes no representations or warranties about the quality or suitability
of the materials, either expressly or implied, including but not limited
to any implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. The University of Florida GeoPlan Center
shall not be liable for any damages suffered as a result of using,
modifying, contributing or distributing the materials.

A note about data scale: 

Scale is an important factor in data usage.  Certain scale datasets
are not suitable for some project, analysis, or modeling purposes.
Please be sure you are using the best available data. 

1:24000 scale datasets are recommended for projects that are at the
county level.
1:24000 data should NOT be used for high accuracy base mapping such
as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the
multi-county or regional level.
1:125000 scale datasets are recommended for projects that are at the
regional or state level or larger.

Vector datasets with no defined scale or accuracy should be
considered suspect. Make sure you are familiar with your data
before using it for projects or analysis. Every effort has been
made to supply the user with data documentation. For additional
information, see the References section and the Data Source Contact
section of this documentation. For more information regarding
scale and accuracy, see our webpage at:
http://geoplan.ufl.edu/education.html








REFERENCES: 














DATA LINEAGE SUMMARY: 








GeoPlan acquired 2 DEMs:

1) FWC DEM
The Florida Statewide 5-meter digital elevation model (DEM) was generated primarily 
from gridded Tagged Vector Contours (TVCs) produced by Florida Department of 
Environmental Protection. This data, representing over 1,000 USGS topographic 
maps from the1950's to 1980's, spans a variety of contour intervals including 1- and 
2-meter and 5- and 10-foot. In addition to gridded TVCs, the FWC production 
process includes the introduction of over 90,000 surface control points to ensure 
vertical accuracy of the resulting 5-meter elevation model. The measured accuracy 
of the FWC-produced 5-meter digital elevation model, using almost 10,000 
independent test points, yields results that are within National Map Accuracy 
Standards for vertical accuracy. The contour intervals vary across the state 
therefore the value for the accuracy also varies. The Florida Department of 
Emergency Management is currently collecting LiDAR data for the state's coastal 
areas. In order to avoid duplication of work effort, the coastal areas which have or 
are scheduled to have LiDAR data available are not included in this statewide DEM 
work effort. In order to make the data more manageable, and since the topography 
of the state varies considerably from north to south, the state was divided into three 
blocks for data processing. This metadata is attached to a shapefile representing 
block 1. The actual DEMs are smaller individual blocks, and elevation is measured 
in meters.

2) Coastal Lidar
Metadata for the Coastal Lidar is currently in development by NOAA. For metadata 
like information, please see the following link:
http://www.csc.noaa.gov/digitalcoast/data/coastallidar/index.html


This DEM was created by mosaicking a DEM sourced from the Florida Fish & 
Wildlife Conservation Commission (FWC) with a DEM created from the coastal Lidar 
data sourced from the NOAA Coastal Services Center. During the mosaic, the Lidar 
raster was specified as priority, which had the effect of masking FWC data 
wherever Lidar data was present. After the mosaic the DEM elevation values were 
converted from meters to feet. The vertical datum is NAVD88, meters, and the 
projection is Albers Equal Area Conic, meters.

Output renamed to FLIDAR_FWC_FT
Process Date: 20120829









MAP PROJECTION PARAMETERS: 



Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000




DATA SOURCE CONTACT (S):








Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:




University of Florida GeoPlan Center
GeoPlan
431 Architecture PO Box 115706
Gainesville, Florida
32611-5706



http://www.fgdl.org/
rlw@geoplan.ufl.edu
Russell Watkins









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