NOAA Center for Tsunami Research 2006 1 vector digital data Historic Shoreline Oregon Series 2006 Menlo Park, California U.S. Geological Survey http://pubs.usgs.gov/ds/2006/236/catalog.shtml Florence L. Wong Angie J. Venturato Eric L. Geist 2006 vector digital data U.S. Geological Survey Data Series 236 Menlo Park, California U.S. Geological Survey http://pubs.usgs.gov/ds/2006/236/ Historical shoreline analysis was performed to understand the dynamic nature of the Seaside, Oregon coastal region. Digital polylines representing apparent Mean High Water and Mean Lower Low Water were derived from historic aerial photography obtained from the University of Oregon. This data set is one of a collection of spatially referenced digital files in a geographic information system related to the Seaside, Oregon, Tsunami Pilot Study. Federal Emergency Management Agency (FEMA) Federal Insurance Rate Map (FIRM) guidelines do not currently exist for conducting and incorporating tsunami hazard assessments that reflect the substantial advances in tsunami research achieved in the last two decades (Tsunami Pilot Study Working Group, 2006). Therefore, as part of the FEMA Modernization Program, a Tsunami Pilot Study was carried out in the Seaside/Gearhart, Oregon, area to provide information from which tsunami mapping guidelines could be developed. This area was chosen because it is typical of coastal communities in the section of the Pacific Coast from Cape Mendocino to the Strait of Juan de Fuca. There was also considerable interest shown by state agencies and local stakeholders in mapping the tsunami threat to this region. The study was an interagency effort by scientists from the U.S. Geological Survey, the National Oceanic and Atmospheric Administration, the University of Southern California, and the Middle East Technical University. We present the GIS data from that report in this publication. These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. 1939 2000 ground condition Complete None planned -123.939842 -123.911147 46.046102 45.975819 none historic shoreline coastline Mean High Water Mean Lower Low Water Geographic Names Information System Seaside, Oregon Gearhart, Oregon Oregon USA none 1939 1945 1946 estimate 1953 1958 1960 estimate 1964 estimate 1967 1980 1994 2000 None. These data were created for the sole purpose of the Seaside, Oregon, Tsunami Pilot Study. It is not meant for navigational means. The National Oceanic and Atmospheric Administration makes no expressed or implied warranty regarding the accuracy of these 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 on any other system. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Angie J. Venturato NOAA Center for Tsunami Research Research Scientist mailing address

7600 Sand Point Way NE

Seattle Washington 98115 USA 206-526-6556 Angie.J.Venturato@noaa.gov http://pubs.usgs.gov/ds/2006/236/metadata/historicshorelines.gif Historical shorelines depicting the apparent Mean High Water line based on orthophotography. GIF Army Corps, Army Flight, ASCS, Oregon Tax Commission, WAC Corps Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Tsunami Pilot Study Working Group 2006 1 U.S. Geological Survey Open-File Report 2006-1234 Menlo Park, California U.S. Geological Survey http://pubs.usgs.gov/of/2006/1234/ Venturato, A.J. 2005 http://www.pmel.noaa.gov/pubs/PDF/vent2812/vent2812.pdf Army Corps 1939 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm Army Flight 1953 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm ASCS 1953 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm Oregon Tax Commission 1958 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm Oregon Tax Commission 1967 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm WAC Corp 1982 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm ASCS 1994 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm These data contain attributes automatically generated by ESRI ArcGIS software and two user-defined attributes that identify the polyline. These data were derived from georeferenced digital photography to represent apparent Mean High Water and/or Mean Lower Low Water based on visual analysis. Complete. Army Corps 1939 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm 10500 CD-ROM 1939 ground condition 1939 Digital tiff images of OC & SW project Army Flight 1953 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm 10000 CD-ROM 1945 ground condition 1945 Digital tiff images of Army Flight 5M Project ASCS 1953 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm 20000 CD-ROM 1953 ground condition 1953 Digital tiff images of ASCS BAR-A Project Oregon Tax Commission 1958 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm 12000 CD-ROM 1958 ground condition 1958 Digital tiff images of Oregon Tax Commission CLB Project Oregon Tax Commission 1967 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm 8000 CD-ROM 1967 ground condition 1967 Digital tiff images of Oregon Tax Commission OC-3 Project WAC Corp 1982 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm 31640 CD-ROM 1980 ground condition 1980 Digital tiff files of WAC Corp WAC-82H Project ASCS 1994 raster digital data Obtained from University of Oregon Library - Map and Aerial Photography Collection http://libweb.uoregon.edu/map/orephoto/cities/seaside.htm 40000 CD-ROM 1994 ground condition 1994 Digital tiff images of ASCS NAPP Project Digital tiff files were obtained from the University of Oregon Library Map and Aerial Photography Collection and georeferenced and merged by year in ESRI ArcGIS 9.1. 1939 1945 1953 1958 1967 1980 1994 2004 Polyline shapefiles were created by digitizing the apparent Mean High Water lines for each merged aerial photography project. Additional polyline shapefiles were created by digitizing the apparent Mean High Water and Mean Lower Low Water lines from photography projects for the years closest to historic tsunami events (1946, 1960, 1964). 2004 coast1939 coast1945 coast1946est coast1953 coast1958 coast1960est coast1964est coast1967 coast1980 coast1994 An additional polyline file representing Mean High Water and Mean Lower Low Water was derived for display purposes by clipping another polyline file representing shoreline based on various sources. Refer to pacnwsltopo metadata for more information. pacnwsltopo 2004 coast2000 Vector String 1.000000 1.000000 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 coast#### name of shapefile none FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. ID user-defined identification number none number user-defined identification value none TYPE user-defined type to distinguish representation none Estimated MLLW polyline representing apparent Mean Lower Low Water none Estimated MHW polyline representing apparent Mean High Water none U.S. Geological Survey mailing address

USGS Information Services Box 25286

Denver Colorado 80225-0286 USA 1-888-275-8747 infoservices@usgs.gov U.S. Geological Survey Data Series 236 The act of distribution shall not constitute any warranty expressed or implied by the U.S. Geological Survey as to the accuracy of these data, and no responsibility is assumed by the U.S. Geological Survey in the use of these data on any other system. ARCE 9.1 ArcGIS shapefile no compression applied 0.020 http://pubs.usgs.gov/ds/2006/236 None. 20060627 200607 NOAA Center for Tsunami Research Angie J. Venturato mailing address

7600 Sand Point Way NE

Seattle Washington 98115 USA 206-526-6556 Angie.J.Venturato@noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 None None