Geomorphic mapping to support river restoration on the Trinity River downstream from Lewiston Dam, California, 1980-2011

Open-File Report 2015-1047
Prepared in cooperation with the Trinity River Restoration Program
By:  and 

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Abstract

Historic land use, dam construction, water storage, and flow diversions in the Trinity River watershed have resulted in downstream geomorphic change, loss of salmonid habitat, and declines in salmonid populations. The USGS in cooperation with the Trinity River Restoration Program, a multi-agency partnership tasked with implementing federally mandated restoration, completed a geomorphic change assessment to inform the planning process for future restoration work. This report documents an ARCMAP geodatabase (v.10.0) containing geomorphic features digitized from a series of rectified orthophotographs (http://dx.doi.org/10.5066/F7TT4P04). Upland, riparian, and channel features were digitized from six available base images (1980, 1997, 2001, 2006, 2009, and 2011). This report describes the structure of the geodatabase and the methods used to delineate individual geomorphic features.

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Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Geomorphic mapping to support river restoration on the Trinity River downstream from Lewiston Dam, California, 1980-2011
Series title Open-File Report
Series number 2015-1047
DOI 10.3133/ofr20151047
Year Published 2015
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) California Water Science Center
Description Report: iv, 15 p.; Database of Geomorphic Features
Time Range Start 1980-01-01
Time Range End 2011-12-31
Country United States
State California
Other Geospatial Trinity River
Datum North American Datum of 1983
Projection Universal Transverse Mercator projection, Zone 10
Online Only (Y/N) Y
Additional Online Files (Y/N) Y
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