Index of Acquisition Dates for NAIP Digital Orthorectified Images (DOQ), Minnesota, 2013

This page last updated: 04/14/2014
Metadata created using Minnesota Geographic Metadata Guidelines


Go to Section:
1. Overview
2. Data Quality
3. Data Organization
4. Coordinate System
5. Attributes
6. Distribution - Get Data
7. Metadata Reference

Section 1 Overview
Originator U.S. Department of Agriculture (USDA), Farm Service Agency (FSA), Aerial Photography Field Office (APFO)
Title Index of Acquisition Dates for NAIP Digital Orthorectified Images (DOQ), Minnesota, 2013
Abstract This data set contains polygons delineating the seamline boundaries of imagery acquired as part of the National Agriculture Imagery Program (NAIP), and used in the creation of DOQQs and compressed county mosaics (CCM). 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 4 band digital ortho imagery from airborne and/or space based platforms during the agricultural growing seasons in the U.S.. A primary goal of the NAIP program is to enable availability of ortho imagery within sixty days of acquisition. The NAIP provides 1 meter or 1/2 meter GSD ortho imagery rectified within +/- 6 meters to true ground at a 95% confidence level. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 (plus or minus 30) pixel buffer on all four sides. The NAIP quarter quads are formatted to the UTM coordinate system using the North American Datum of 1983 (NAD83).

(Note: The Minnesota Geospatial Information Office (MnGeo) has created this metadata record to describe the entire NAIP 2013 seamline shapefile dataset, using information from Farm Service Agency metadata. Each seamline shapefile is accompanied by the original FSA metadata for that county.)
Purpose This index aids USDA Agencies in identifying source acquisition date boundaries for the compressed county mosaic as they administer USDA programs for their customers.
Time Period of Content Date 09/18/2013
Currentness Reference ESRI shapefile creation date.
Progress Complete
Maintenance and Update Frequency Irregular
Spatial Extent of Data Minnesota
Bounding Coordinates -95.1
-94.3
44.5
44
Place Keywords Minnesota, MN
Theme Keywords imageryBaseMapsEarthCover, Digital Orthorectified Image, Digital Orthophoto Quad, Ortho, Orthophoto, DOQ, NAIP, Compliance, Air Photo, Air Photography, Aerial Photo, Aerial Photography
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints None
Use Constraints The Aerial Photography Field Office asks to be credited in derived products.

Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit.
Contact Person Information ,
USDA-FSA-APFO Aerial Photography Field Office
2222 West 2300 South
Salt Lake City, UT  84119
Phone: 801-844-2922
Fax: 801-956-3653
Email: apfo.sales@slc.usda.gov
Browse Graphic None available
Associated Data Sets For information on Minnesota NAIP 2013 air photos, including options for viewing and downloading the imagery, see www.mngeo.state.mn.us/chouse/airphoto/naip13.html

For information on other air photos available for Minnesota, including other years of NAIP imagery, see www.mngeo.state.mn.us/chouse/airphoto/index.html

Section 2 Data Quality
Attribute Accuracy All data have been reviewed for correct application of attributes and are accurate to current conditions.
Logical Consistency 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. The dataset is comprised of polygons delineating portions of each exposure used as source data for each part of the NAIP imagery, with no gaps in coverage. Attribution includes acquisition dates and times.
Completeness 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.
Horizontal Positional Accuracy None
Vertical Positional Accuracy N/A
Lineage This ESRI shapefile was created using ESRI ArcMap 9.3.1. A script was used to take the seam output from OrthoVista and output the polygon shapefile. The attribute data is take from the image acquisition data.

Note: The files will be in either UTM zone 14 or 15, depending on which zone covers the majority of the county.

Section 3 Spatial Data Organization (not used in this metadata)

Section 4 Coordinate System
Horizontal Coordinate Scheme Universal Transverse Mercator
UTM Zone Number 15
Horizontal Datum NAD83
Horizontal Units meters

Section 5 Attributes
Overview ID: Seam polygon identification
IDATE: Imagery date defined by seam polygon
SDATE: Start date and time of acquisition for imagery defined by seam polygon
EDATE: Imagery date defined by seam polygon
BCON: Acquisition collection medium (band content).
- NC: Natural Color
- CIR: Color Infrared
- MB: Multi Band Imagery
CAM_TYPE: Camera types for source imagery
CAM_MAN: Camera manufacturer for source imagery
CAM_MOD: Camera model
SENSNUM: Sensor identification number, sensor head or lens serial number
Shape_Area: Seam polygon area measurement
HARD_FIRM: Camera system hardware/firmware major version used
AC_TYPE: Aircraft type
ACTAILNUM: Aircraft tail number
Detailed Citation None
Table Detail:

Section 6 Distribution
Publisher U.S. Department of Agriculture
Publication Date 10/30/2013
Contact Person Information Nancy Rader, GIS Data Coordinator
Minnesota Geospatial Information Office (MnGeo)
658 Cedar Street
St. Paul, MN  55155
Phone: 651-201-2489
Email: gisinfo.mngeo@state.mn.us
Distributor's Data Set Identifier NAIP 2013
Distribution Liability 1. FSA Liability Statement: 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).

2. MnGeo's data disclaimer is online: www.mngeo.state.mn.us/chouse/disclaimer.html
Ordering Instructions 1. To obtain all of Minnesota's seamline shapefiles (1 per county), click below after Online Linkage. Doing so will tell your browser to start downloading a compressed 'ZIP' file which will contain the following:

One folder per county, each containing:
- Shapefile (.shp, .shx, .dbf, .prj)
- Original FSA documentation (.txt, .xml) for the data set

For help with unzipping the download file, see: www.gda.state.mn.us/resource.html?Id=16253#compress

2. A county's seamline shapefile is also included with each NAIP2013 county mosaic file downloadable from the U.S. Dept. of Agriculture, Natural Resources Conservation Service's Geospatial Data Gateway site: datagateway.nrcs.usda.gov
Online Linkage I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process or link to download information. See "Ordering Instructions" above for details.

Section 7 Metadata Reference
Metadata Date 04/14/2014
Contact Person Information Nancy Rader, GIS Data Coordinator
Minnesota Geospatial Information Office (MnGeo)
658 Cedar Street
St. Paul, MN  55155
Phone: 651-201-2489
Email: gisinfo.mngeo@state.mn.us
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm


This page last updated: 04/14/2014
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