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21 Aug, 2019
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File:Harpersfield Covered Bridge (2015).jpg

This image or file is a work of a U.S. Army Corps of Engineers soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:46, 13 September 2015		4,288 × 2,848 (6.73 MB)	Magnolia677	{{Information \|Description=Harpersfield Covered Bridge over the Grand River. \|Source=[https://www.flickr.com/photos/usacehq/18905266554/ Invasive species prevention] \|Date=2015-06-10 18:51 \|Author=[https://www.flickr.com/people/30539067@N04 U.S. Army C...

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Image title	The project is located in the town of Geneva in Ashtabula County, OH along the Grand River. The dam is immediately upstream of the historic Harpersfield covered bridge on Old Harpersfield Road. Sea lamprey in the Great Lakes are a problem because of their aggressive parasitism on key predator species and game fish, such as lake trout, lake whitefish, chub, and lake herring. To effectively prevent migration of sea lamprey in the Grand River upstream of the Harpersfield Dam, replacing the existing dam with a new barrier that meets current standards and integrated sea lamprey traps was identified as the selected alternative.
Camera model	RPORATION
Author	USACE Buffalo
F-number	f/0
ISO speed rating	200
Lens focal length	0.16216216216216 mm
Short title	150612-A-IF251-033
Date and time of data generation	14:51, 10 June 2015
Orientation	Normal
Horizontal resolution	1.0020513566384 dpi
Vertical resolution	2,684,354.56 dpi
File change date and time	Ver.1.00
Y and C positioning	Co-sited
Exposure Program	Not defined
Exif version	2.21
Date and time of digitizing	10 18:51:27
Meaning of each component	Y Cb Cr does not exist
Image compression mode	0.8748050563861
Shutter speed	7.321928
APEX aperture	7.400879
Exposure bias	244,092,352
Subject distance	2.24 meters
Metering mode	Pattern
Light source	Unknown
Flash	Flash did not fire, auto mode
Supported Flashpix version	1
Color space	sRGB
Sensing method	One-chip color area sensor
File source	Digital still camera
Scene type	A directly photographed image
Custom image processing	Normal process
Exposure mode	Auto exposure
White balance	Auto white balance
Digital zoom ratio	4,112
Focal length in 35 mm film	30 mm
Scene capture type	Standard
Scene control	None
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Subject distance range	Unknown
GPS tag version	2.2.0.0
Serial number of camera	3446856
Lens used	18.0-200.0 mm f/3.5-5.6
Software used	Ver.1.00
Date metadata was last modified	08:43, 8 July 2015
Unique ID of original document	B3D09E84C7C4FFC92BBA6130B9970EA6
Type of media	Photo
Keywords	Sea Lamprey Dam Harpersfield Ohio Ashtabula
IIM version	4

File:Harpersfield Covered Bridge (2015).jpg

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10 June 2015

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18905266554

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