Metadata for 1999 Park County 2-foot Resolution Aerial Photos
Identification Information:
Citation:
Originator: USDA Forest Service Northern Region
Publication date: 07/27/2010
Title: 1999 Park County 2-foot Resolution Aerial Photos
Publication place: Helena, MT
Publisher: Montana State Library
Online linkage: http://geoinfo.msl.mt.gov/Home/data/aerial_photographs_of_Montana

Abstract:
These are Black and White visible-band orthophotos showing two disconnected reaches of the Yellowstone River in Park County. The upper reach runs approximately 20 miles from Gardiner north to the US 89 Bridge, and the lower reach runs about 16 miles from a point about 6 miles northeast of Livingston to a point 2.75 miles east of the county line. The photos were taken on April 11, 1999 and the pixel resolution is 2 feet.
Purpose:
These orthophotos were created as part of a multi-agency flood plain study of the Upper Yellowstone River, extending along approximately 80 miles of the river. Partners include the US Army Corps of Engineers, USDA Forest Service Northern Region and the Montana Department of Natural Resources and Conservation.
Supplemental information:
Here is some information provided about the original photography. The current layer consists of 9 images selected from the data described below, converted to Montana State Plane Coordinates:

This data set contains a series of twenty digital orthophotos that follow the course of the Yellowstone River, extending from approximately four miles north of Springdale, Montana, to Gardiner, Montana. We used six strips of 24000 black and white photography flown parallel with the river and oriented the orthophotos along the axis of flight. Each orthophoto measures 13200 feet in X and 27250 feet in Y and overlaps the next in sequence by a minimum of two thousand feet. Significant overlap occurs between strips. The orthophotos are in the Montana State Plane South Zone coordinate system, 1927 North America Datum. Each digital image is in Tagged Image File Format, approximately 200 MB in size, and has a two foot ground resolution.

Time period of content:
Calendar date: 04/11/1999
Currentness reference: Ground Condition
Status:
Progress: Complete
Maintenance and update frequency: None planned
Access constraints: None
Use constraints:
The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.
Point of contact:
Don Patterson
Land Surveyor
USDA Forest Service, Northern Region
USDA Forest Service Federal Building 200 East Broadway P.O. Box 7669
Missoula, MT 59807


Telephone: (406) 329-3430
Fax: (406) 329-3198
E-Mail: dpatterson01@fs.fed.us


Point of contact:
Mike Gilbert
Dept of the Army, Corps of Engineers
Dept of the Army Corps of Engineers, Omaha District 215 North 17th Street Regulatory Branch PO Box 5
Omaha, Nebraska 68101-002


Telephone: (402) 221-3057


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Data Quality Information:
Completeness report:
All Upper Yellowstone orthophotos were derived from mosaicking multiple images within each of six strips of photography using Intergraph's Modular GIS Environment/ImageStation Imager (MGE/ISI-1) software. Final orthophotos were extracted from the mosaicked images to fit the required extents. Nineteen of twenty orthophotos have 100 percent coverage while orthophoto 6A has approximately 98 percent coverage. The sliver of missing coverage falls over one mile from the Yellowstone River along the eastern edge of the ortho, but does not effect the intended study area. Each orthophoto within a strip overlaps adjacent orthophotos by a minimum of two thousand feet. Each strip overlaps adjacent strips by a significant and variable amount that allows for ease of transition. All orthophotos are cloud free but may include minor areas of snow cover.


Horizontal Positional Accuracy Report:
Horizontal and vertical control came from USGS 24000 scale quadrangles primarily using clearly defined road intersections and road/stream intersections and map spot elevations respectively. Aerotriangulation occurred on a Wild BC3 Stereo Analytical Plotter with residuals averaging +/- 15 feet horizontal and +/- 18 feet vertical. Absolute orientation of the images on the Intergraph CLIX 6887 ImageStation met the given control with average residuals of +/- 2 feet horizontal and +/- 1.5 feet vertical.

Lineage:

Process step:
1:24000 scale black and white photography was flown specifically for this project on April 11, 1999. Six strips of photography were flown parallel to the river course for a total of 91 images, using a Jena LMK 15/2323 camera with a calibrated focal length of 152.258mm. Film diapositives were scanned at 21 microns on a Zeiss/Intergraph precision image scanner and delivered as JPEG encoded 8 bit raster files.

Eighty-five film diapositives were bridged on a Wild BC3 Stereo Analytical Plotter in the Montana State Plane South Zone (2503), National Geodetic Vertical Datum of 1929 and (Horizontal) 1927 North American Datum. Map control was transferred to three pugged passpoints per photo oriented in the standard aerotriangulation passpoint configuration.

DTM collection on seventy seven JPEG encoded models occurred on an Intergraph CLIX 6887 ImageStation using a combination of automatic data collection and manual point collection within Intergraph's ImageStation DTM Collection (ISDC) software. The DTMs were collected on a 100 foot grid without breaklines. Individual model DTMs were merged to create a single strip DTM and output to a triangulated irregular network (*.TTN) file. The TTN file, in concert with projected Intergraph design (*.dgn) files, were used to orthorectify selected 8 bit images, typically every other image in a strip. We used the Cubic Convolution Interpolation Method to resample the images and output was as JPEG, tiled, compressed files.

Orthophotos were visually matched for color and brightness and individual orthophotos were mosaicked together. The JPEG files were then converted to Tagged Image File Format (TIFF) files. All sheet collars, created in design file format, were output as DWG files and also imported into ARC for conversion to ARC coverages. The TIFF files were then registered to their corresponding ARC coverages and world files created.
Process date: 09/20/2000
Process contact:
William R. O'Donnell
Photogrammetrist
USDA Forest Service Northern Region
USDA Forest Service Federal Building 200 East Broadway P.O. Box 7669
Missoula, MT 59807


Telephone: (406) 329-3502
Fax: (406) 329-3199
E-Mail: wodonnell@fs.fed.us


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Spatial Reference Information:
Horizontal coordinate system definition:
Grid coordinate system name: State Plane Coordinate System
SPCS zone identifier: 2500
Lambert conformal conic:
Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000
Planar distance units: meters
Geodetic model:
Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222
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Distribution Information:
Distributor:
Montana State Library
PO Box 201800
Helena, MT 59620-1800


Telephone: 406-444-5354
TDD/TTY telephone: 406-444-4799
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov


Resource description: Downloadable Data


Distribution liability:
The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Standard order process:
Digital form:
Format name: MrSID image
Online option:
http://geoinfo.msl.mt.gov/Home/data/aerial_photographs_of_Montana
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Metadata Reference Information:
Metadata date: 04/17/2013
Metadata review date: 07/27/2010
Metadata contact:
William R. O'Donnell
Photogrammetrist
USDA Forest Service Northern Region
USDA Forest Service Federal Building 200 East Broadway P.O. Box 7669
Missoula, MT 59807


Telephone: (406) 329-3502
Fax: (406) 329-3199
E-Mail: wodonnell@fs.fed.us


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