File:Construction of river channel closing structure in the Mississippi NRRA (7df8f79e-1761-4967-a358-64b4e9a4d1c3).jpg

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Summary

English: Construction of river channel closing structure in the Mississippi NRRA
Photographer
English: NPS Staff
Title
English: Construction of river channel closing structure in the Mississippi NRRA
Publisher
English: U.S. National Park Service
Description
English:

from north end of island, facing upstream

This series of photos was taken on July 12, 2005, on and near NPS Island 112-02 during a canoe safety training for new staff. The images depict construction by the U.S. Army Corps of Engineers of a partial closing structure made of riprap, dredged material and live plant material. The purpose of the structure is to control erosion on the upstream end of the island and to create new wildlife habitat. This project is part of the Corps' Channel Maintenance Management Plan. NPS Island 112-02 is located in Mississippi River Pool 2 at River Mile 827.5

  • Keywords: mnrra; mississippi river; pool 2; nps island 112-02; riprap; habitat; erosion control; u.s. army corps of engineers; Rivers; Islands; Construction and Engineering; Wildlife management; Vegetation restoration
Depicted place
English: NPS Island 112-02, Mississippi National River and Recreation Area, Minnesota
Date Taken on 12 July 2005
Accession number
7df8f79e-1761-4967-a358-64b4e9a4d1c3
Source
English: NPGallery
Permission
(Reusing this file)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.
NPS Unit Code
InfoField
MISS
Legacy NPS Focus Record ID
InfoField
233177
Camera Model OLYMPUS OPTICAL CO.,LTD OLYMPUS OPTICAL CO.,LTD, C40Z,D40Z
Shutter speed 10/4000
Aperture f / 8
Film speed (ISO) 100
Focal length 7.5 mm

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Items portrayed in this file

depicts

inception

12 July 2005

exposure time

0.0025 second

focal length

7.5 millimetre

MIME type

image/jpeg

checksum

8a4b99c0b34f75eb530eb58649da0dc3e44ba190

determination method: SHA-1

data size

884,598 byte

height

1,704 pixel

width

2,272 pixel

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Date/TimeThumbnailDimensionsUserComment
current19:57, 3 July 2019Thumbnail for version as of 19:57, 3 July 20192,272 × 1,704 (864 KB)BMacZeroBotBatch upload (Commons:Batch uploading/NPGallery)
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