USDA-FSA Aerial Photography Field Office
20091013
Index of source acquisition dates.
Version
vector digital data
Salt Lake City, Utah
USDA-FSA Aerial Photography Field Office
This data set contains polygons delineating the
seams boundary between acquired imagery used in
the creation of DOQQs and compressed county mosaic
(CCM). The DOQQ and CCM products were created from
imagery acquired in the National Agriculture Imagery
Program (NAIP). These seam polygons can be used as a
tool in determining the image source and date of each
portion of the DOQQ or the CCM.
The NAIP acquires digital ortho imagery during the
agricultural growing seasons in the continental U.S..
A primary goal of the NAIP program is to enable
availability of ortho imagery within one year of
acquisition. The NAIP provides two main products: 1 meter
ground sample distance (GSD) ortho imagery rectified
to a horizontal accuracy within +/- 5 meters of
reference digital ortho quarter quads (DOQQ's) from
the National Digital Ortho Program (NDOP), or from
the National Agriculture Imagery Program (NAIP); 1
meter GSD ortho imagery rectified within +/- 6 meters
to true ground. The tiling format of NAIP imagery
is based on a 3.75' x 3.75' quarter quadrangle with
a 300 meter buffer on all four sides. The NAIP quarter
quads are formatted to the UTM coordinate system
using the North American Datum of 1983 (NAD83).
This index will aid USDA Agencies in identifying
and delineating source acquisition date boundaries
for the compressed county mosaic as they administer
USDA programs for their customers.
20091013
ESRI shapefile creation date.
Irregular
-73.505388
-72.681214
44.316384
43.746120
None
farming
Digital
Mosaic
ortho imagery
United States Department of Agriculture (USDA)
None
USA
FSA
Field Service Center
Aerial Photography Field Office
APFO
USDA
United State Department of Agriculture (USDA)
Addison CO., VT FSA
FIPS 50001
Addison
Vermont
None
None, The USDA-FSA Aerial Photography Field Office asks
to be credited in derived products.
USDA-FSA Aerial Photography Field Office
mailing and physical
2222 West 2300 South
Salt Lake City
Utah
84119-2020
801-844-2922
801-956-3653
apfo.sales@slc.usda.gov
All data have been reviewed for correct application of
attributes and are accurate to current conditions.
USDA-FSA Aerial Photography Field Office relies on the
integrity of the original data collection which was
performed by private contractors. Data integrity was
validated by the responsible private contractor or
sub-contractor. Polygon and chain-node topology present.
There are no duplicate arcs and no dangling nodes.
The data set contains polygons that do not overlap,
there are no polygons that are entered twice, and all
areas are completely described. The area features are
topologically structured with nodes at all intersections.
Attribution of the digital data set includes polygon areas
that define the portion of visible imagery used representing
the same source acquisition date, with no gaps in coverage.
To the best knowledge of the USDA-FSA Aerial Photography
Field Office this digital data set is complete with no
required elements left unrepresented according to
contract specifications.
None
USDA-FSA Aerial Photography Field Office
20091013
Index of source acquisition dates.
Vector Digital Data
12000
CD/DVD
20091013
Date when Vector Digital Data was prepared.
NAIP
Collection date of source image data.
This ESRI shape file was created using custom-developed software
and the freeware 'shapelib' library. The list of quarter
quandrangles was extracted from government-furnished information.
The extent of the quarter quadrangle polygons is based the
computation of UTM coordinates from the government-furnished
geographic bounds. The ordering scheme for insertion of the
digital orthophotos is based on a last-in-last-on-top scheme.
withheld
20091013
None
Vector
Simple
FALSE
0
TRUE
FALSE
coordinate pair
0.000064
0.000064
meters
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
dBase file (.dbf)
The dBASE file that stores the attribute information of
features. When a shapefile is added as a theme to a view,
this file is displayed as a feature table.
ESRI OnLine Help
Feature Class
0
objectid
objectid
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
shape
Geometry
8
0
0
Feature geometry.
Esri
Coordinates defining the features.
IDATE
Imagery date defined by seam polygon
USDA-FSA Aerial Photography Field Office
Acquisition dates for source imagery.
Calander dates. YYYY-MM-DD
idate
Date
8
0
0
st_area(shape)
st_area(shape)
Double
0
0
0
st_perimeter(shape)
st_perimeter(shape)
Double
0
0
0
Entity Name Type Length
---------------- -------- ------
OID ObjectID 4
Shape Polygon
ID String 6
IDATE Date 10
SDATE String 16
EDATE String 16
BCON String 20
CAM_TYPE String 20
CAM_MAN String 50
CAM_MOD String 25
SENSNUM String 100
Shape_Area Double 19
USDA-FSA Aerial Photography Field Office Contract Specifications.
USDA-FSA Aerial Photography Field Office
mailing address
2222 West 2300 South
Salt Lake City
Utah
84119-2020
801-844-2922
801-956-3653
apfo.sales@slc.usda.gov
In no event shall the creators, custodians, or distributors
of this information be liable for any damages arising out
of its use (or the inability to use it).
20091013
USDA-FSA Aerial Photography Field Office
mailing address
2222 West 2300 South
Salt Lake City
Utah
84119-2020
801-844-2922
apfo.sales@slc.usda.gov
FGDC Content Standards for Digital
Geospatial Metadata
FGDC-STD-001-1998
None
Unclassified
None
Esri ArcGIS 13.1.2.41833
AQD_2009_VT
AQD_2009_VT
002
0.000
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
NAD_1983_UTM_Zone_18N
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.1.0'><WKT>PROJCS["NAD_1983_UTM_Zone_18N",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-75.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",26918]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>26918</WKID><LatestWKID>26918</LatestWKID></ProjectedCoordinateSystem>
20240510
13390100
20240510
13390100
Enterprise Geodatabase Feature Class
0.000
dataset
EPSG
6.11(3.0.1)
0
20240510