U.S. Geological Survey 2012 raster digital data Open File Report 2012-11187 Reston, VA U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?ofr2012_1187_Wilson_Kilchis_Photo_Mosaic_1939 Jones, Krista L. Keith, Mackenzie K. O'Connor, Jim E. Mangano, Joseph F. Wallick, J. Rose 2012 U.S. Geological Survey Open-File Report 2012-1187 Reston, Virginia U.S. Geological Survey 120 p. https://pubs.usgs.gov/of/2012/1187/ The Tillamook Bay subbasins and Nehalem River basins encompass 1,369 and 2,207 respective square kilometers of northwestern Oregon and drain to the Pacific Ocean. The Tillamook, Trask, Wilson, Kilchis, and Miami Rivers flow into Tillamook Bay near the towns of Tillamook and Garibaldi. The Wilson and Trask River basins cover the largest areas (500 and 451 square kilometers, respectively) whereas the Tillamook and Kilchis Rivers encompass similar sized areas (156 and 169 square kilometers, respectively) and the Miami River the smallest area (94 square kilometers). In cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey completed a reconnaissance-level assessment of channel condition and bed-material transport relevant to the permitting of in-stream gravel extraction along the the major alluvial portions of six river systems, including the lowermost 14.1 km of the Tillamook River, 16.3 km of the Trask River, 15.2 km of the Wilson River, 7.8 km of the Kilchis River, 11.6 km of the Miami River, and 31.4 km of the Nehalem River. To support these analyses, digital channel maps were produced to depict channel and floodplain conditions in the Tillamook Bay sub-basins and Nehalem River basin from different time periods. GIS layers defining the wetted channel and bar features and channel centerline in the study area were developed for four time periods: 1939, 1967, 2005, 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 wetted channel and bar feature datasets were developed by digitizing from aerial photographs. Aerial photographs from 1939 and 1967 were scanned, rectified, and mosaicked for this project (See metadata for each photograph set for more information on the rectification process and resolution of each dataset). Digital orthophotographs from 2005 and 2009 are publicly available. These data were created to support preliminary assessment of channel stability and bed-material transport on Tillamook, Trask, Wilson, Kilchis, Miami, and Nehalem Rivers, northwest Oregon. This mapping was used to track changes in channel morphology and planform over time. 1939 ground condition Complete None planned -123.879579 -123.721311 45.532640 45.459712 ISO 19115 Topic Categories inlandWaters USGS Thesaurus sediment transport historical channel change fluvial geomorphology channel stability aerial photograph ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:c3bc487c-08b7-42fe-ae08-e1f7cc2f67ab Geographic Names Information System (GNIS) Tillamook County Tillamook River Tillamook Bay Trask River Nehalem River Miami River Kilchis River Nehalem Bay Oregon Coast Range Wilson River None The U.S. Geological Survey should be acknowledged as the data source in products derived from these data. U.S. Geological Survey Mackenzie Keith Hydrologist mailing

Oregon Water Science Center

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Portland OR 97201 US 503-251-3474 mkeith@usgs.gov https://water.usgs.gov/GIS/browse/ofr2012_1187_Wilson_Kilchis_Photo_Mosaic_1939.jpg Illustration of data set jpg None Unclassified None Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcGIS 10.0.5.4400 Scanned aerial photographs were georeferenced using National Agriculture Imagery Program one-half-meter resolution digital orthophotographs acquired in 2005. Comparison of the 1939 mosaics to National Agriculture Imagery Program digital orthophotographs from 2005 suggest that errors in image alignment are generally less than 4 meters, but may be higher than 9 meters. Data are complete. The 1939 photographs were georeferenced with 8 to 12 ground-control points concentrated near the main channel and rectified with a second-order polynomial transformation. Root mean square error ranged from 1.2 to 4.0 meters. Comparison of the 1939 mosaics to National Agriculture Imagery Program digital orthophotographs from 2005 suggest that errors in image alignment are generally less than 4 meters, but may be higher than 9 meters. Wallick, J. Rose Jim E. O'Connor Anderson, Scott Keith, Mackenzie Cannon, Charles Risley, John C. 2011 U.S. Geological Survey Scientific Investigations Report 2011-5041 Reston, Virginia U.S. Geological Survey 112 p. https://pubs.usgs.gov/sir/2011/5041/ online 1939 2009 ground condition Wallick, 2011 The report describes detailed methods used in photograph rectification and mosaicking, as well as channel centerline, wetted channel, and bar feature delineation. Surdex Corportation, Chesterfield, MO 2006 remote sensing image aerial photograph 20050717 20050720 ground condition NAIP 2005 The aerial photographs provided a base layer from which channel features were delineated. U.S. Army Corps of Engineers unknown remote sensing image 10200 aerial photograph 19390508 19390720 ground condition USACE 1939 The aerial photographs provided a base layer from which channel features were delineated. Digital photographs were obtained from U.S. Army Corps of Engineers Aerial Photograph Library. Photographs were scanned at 600 dots per inch to TIFF format. 2012 USACE 1939 The photographs were georeferenced to National Agriculture Imagery Program digital orthophotographs using ArcGIS 9.3. Ground control points were concentrated near the channel. Stationary points, such as bedrock outcrops and building corners, were primarily used to spatially register the photographs, although less static points, such as intersections and trees, were also used. 2012 USACE 1939 NAIP 2005 The photographs were rectified with a second order polynomial transformation and resampled to a 0.5 meter cell size with bilinear interpoloation using the Georeferencing Toolbar in ArcGIS 9.3. 2012 The rectified images were clipped to include the study area where control points were concentrated. 2012 The rectified images were mosaicked into a single ESRI file geodatabase raster dataset. 2012 Raster Grid Cell 15961 24575 Transverse Mercator 0.9996 -123.0 0.0 500000.0 0.0 coordinate pair 0.000000002220024164500956 0.000000002220024164500956 Meters D North American 1983 GRS 1980 6378137.0 298.257222101 ofr2012_1187_Wilson_Kilchis_Photo_Mosaic_1939 Aerial photo mosaic of the Wilson and Kilchis Rivers, Tillamook basin, Oregon in 1939 U.S. Geological Survey Stretched value Value between 0 and 255 corresponding to color ramp display ESRI 0 255 Pixel value Value between 0 and 255 corresponding to color value ESRI 0 255 U.S. Geological Survey Michael Ierardi IT Specialist mailing

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Reston VA 20192 US 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. The use of firm, trade, or brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. The names mentioned in this document may be trademarks or registered trademarks of their respective trademark owners. ESRI Geodatabase Feature Class ArcGIS 10 PKZIP compression Winzip https://water.usgs.gov/GIS/dsdl/ofr2012_1187_Tillamook_Nehalem_Photo_Mosaics_1939.zip None. This dataset is provided by USGS as a public service. 20201117 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing

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Reston VA 20192 US 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time