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

Jennifer A. Curtis; Timothy M. Guerrero

doi:10.3133/ofr20151047

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

Jennifer A. Curtis·Timothy M. Guerrero

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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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Source-reported bounding extent: 40.64196329226261° to 40.772871880045216° latitude; -123.13201904296875° to -122.79333114624023° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

Jennifer A. Curtis, Timothy M. Guerrero. 2015. Geomorphic mapping to support river restoration on the Trinity River downstream from Lewiston Dam, California, 1980-2011. https://doi.org/10.3133/ofr20151047

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