Dataset Identification:
Resource Abstract:
- description: The Umpqua River drains 12,103 square kilometers (4,673 square miles) in southwest Oregon before flowing into
the Pacific Ocean at Winchester Bay near the city of Reedsport. In cooperation with the Portland District of the U.S. Army
Corps of Engineers (USACE), the USGS evaluated sediment transport and gravel storage along the downstream alluvial reaches
of the North and South Umpqua Rivers and the entire mainstem Umpqua River. This includes the lower 46.8 kilometers (29.1 miles)
of the North Umpqua River and the lower 122.6 kilometers (76.2 miles) of the South Umpqua River. The Umpqua River gravel transport
study involved multiple analyses, including tracking patterns of historical channel change and estimation of a sediment budget.
To support these analyses, digital channel maps were produced to depict channel and floodplain conditions along the Umpqua
River system from different time periods. GIS layers defining the active channel of the Umpqua River system were developed
for three time periods: 1939, 1967, and 2005. For the South Umpqua River and the 19 kilometers (12 miles) of the mainstem
Umpqua River downstream from the confluence of the North and South Umpqua Rivers, GIS layers were also developed for the time
periods 1994, 2000, and 2009. For this project, the active channel was defined as area typically inundated during annual high
flows, and includes the low-flow channel as well as side channels, islands, and channel-flanking gravel bars. The active channel
datasets were developed by digitizing from aerial photographs. Aerial photographs from 1939 and 1967 were scanned, rectified,
and mosaiced for this project. Digital orthophotographs from 1994, 2000, 2005, and 2009 are publicly available (See metadata
for each photograph set for more information on the rectification process and resolution of each dataset). Although our study
area encompasses the Umpqua River and lower reaches of the North and South Umpqua Rivers, the extent of each dataset depended
upon the underlying aerial photographs; for example, the 1967 photographs extend only as far downstream as floodplain kilometer
7, whereas the 1939 and 2005 datasets extend to the mouth of the Umpqua River at the Pacific Ocean.; abstract: The Umpqua
River drains 12,103 square kilometers (4,673 square miles) in southwest Oregon before flowing into the Pacific Ocean at Winchester
Bay near the city of Reedsport. In cooperation with the Portland District of the U.S. Army Corps of Engineers (USACE), the
USGS evaluated sediment transport and gravel storage along the downstream alluvial reaches of the North and South Umpqua Rivers
and the entire mainstem Umpqua River. This includes the lower 46.8 kilometers (29.1 miles) of the North Umpqua River and the
lower 122.6 kilometers (76.2 miles) of the South Umpqua River. The Umpqua River gravel transport study involved multiple analyses,
including tracking patterns of historical channel change and estimation of a sediment budget. To support these analyses, digital
channel maps were produced to depict channel and floodplain conditions along the Umpqua River system from different time periods.
GIS layers defining the active channel of the Umpqua River system were developed for three time periods: 1939, 1967, and 2005.
For the South Umpqua River and the 19 kilometers (12 miles) of the mainstem Umpqua River downstream from the confluence of
the North and South Umpqua Rivers, GIS layers were also developed for the time periods 1994, 2000, and 2009. For this project,
the active channel was defined as area typically inundated during annual high flows, and includes the low-flow channel as
well as side channels, islands, and channel-flanking gravel bars. The active channel datasets were developed by digitizing
from aerial photographs. Aerial photographs from 1939 and 1967 were scanned, rectified, and mosaiced for this project. Digital
orthophotographs from 1994, 2000, 2005, and 2009 are publicly available (See metadata for each photograph set for more information
on the rectification process and resolution of each dataset). Although our study area encompasses the Umpqua River and lower
reaches of the North and South Umpqua Rivers, the extent of each dataset depended upon the underlying aerial photographs;
for example, the 1967 photographs extend only as far downstream as floodplain kilometer 7, whereas the 1939 and 2005 datasets
extend to the mouth of the Umpqua River at the Pacific Ocean.
Citation
- Title Umpqua River Oregon Aerial Photograph Data for 1967.
-
- creation Date
2018-05-21T10:54:59.290218
Resource language:
Processing environment:
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Metadata data stamp:
2018-08-06T23:52:07Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T23:52:07Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:7e859930-54aa-491b-9ae6-038472db2820
Metadata record format is ISO19139 XML (MD_Metadata)