Geomorphology and Flood-Plain Vegetation of the Sprague and Lower Sycan Rivers, Klamath Basin, Oregon

Figure 52. Summary observations of a 2006 survey of deposits and inundation levels of water year 2006 high flows along the main-stem Sprague River. No observations were made in the Chiloquin Canyon valley segment. All elevations are adjusted to the stage associated with an 11.5 m3/s discharge at USGS streamflow-gaging station Sprague River near Chiloquin (station number 11501000). A. Longitudinal trends of deposits and inundation evidence. Peak flow values from Sprague River near Chiloquin and Sprague River near Beatty (11497500); peak flow at both sites was Jan. 1, 2006. B. Summary plots of 2006 flood deposit texture and elevation grouped by bar and flood-plain settings.

Contents:

• Summary and Significant Findings
• Introduction
• The Sprague River Basin
• Study Area, Methods and Data Sources
• Geomorphic Mapping and Geologic History
• Valley Segments
• Channel and Flood-Plain Conditions and Processes
• Flood-Plain and Riparian Vegetation
• Implications for Restoration and Monitoring
• References Cited
• Location Map
• Plate
• Study Description and Links to Map Data

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