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Database of Geomorphic Features, Trinity River California, 1980–2011


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The USGS in cooperation with the Trinity River Restoration Program, a multi-agency group tasked with implementing federally mandated restoration, completed a geomorphic change assessment to inform the planning process for future restoration work. The ARCMAP geodatabase (v.10.0) contains geomorphic features digitized from six rectified orthophotographs (1980, 1997, 2001, 2006, 2009, and 2011). The structure of the geodatabase and methods used to delineate individual geomorphic features are described in Curtis, J.A., and Guerrero, T.M., 2015, Geomorphic mapping to support river restoration on the Trinity River downstream from Lewiston Dam, California, 1980–2011: U.S. Geological Survey Open-File Report 2015-5046.


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This ARCMAP geodatabase (v.10.0) contains geomorphic feature data developed by the USGS California Water Science Center to quantify system-wide geomorphic change within a 65-km restoration reach located along the mainstem Trinity River downstream from Lewiston Dam, California.


  • USGS California Water Science Center




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