U.S. Geological Survey 2013 vector digital data Open-File Report 2012-1008 Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program https://doi.org/10.3133/ofr20121008 https://pubs.usgs.gov/of/2012/1008/html/data.html https://pubs.usgs.gov/of/2012/1008/data/OR_transects_ST.zip Meredith Kratzmann Emily Himmelstoss Peter Ruggiero E. Robert Thieler David Reid 2013 Open-File Report 2012-1008 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/of/2012/1008/ Sandy ocean beaches are a popular recreational destination, often surrounded by communities containing valuable real estate. Development is on the rise despite the fact that coastal infrastructure is subjected to flooding and erosion. As a result, there is an increased demand for accurate information regarding past and present shoreline changes. To meet these national needs, the Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) is compiling existing reliable historical shoreline data along open-ocean sandy shores of the conterminous United States and parts of Alaska and Hawaii under the National Assessment of Shoreline Change project. There is no widely accepted standard for analyzing shoreline change. Existing shoreline data measurements and rate calculation methods vary from study to study and prevent combining results into state-wide or regional assessments. The impetus behind the National Assessment project was to develop a standardized method of measuring changes in shoreline position that is consistent from coast to coast. The goal was to facilitate the process of periodically and systematically updating the results in an internally consistent manner. This dataset consists of short-term (~30 years) shoreline change rates for Oregon. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 4.2, an ArcGIS extension developed by the U.S. Geological Survey. Short-term rates of shoreline change were calculated using an end-point rate method based on shorelines from 1967 and 2002 to provide an approximately 30-yr short-term rate. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate short-term rates. 2013 publication date Complete None planned -124.564650 -123.919868 46.226029 42.054295 USGS Metadata Identifier USGS:4313b86b-335c-41d1-82bf-5c9c2df1282c None Shoreline Historic Shoreline Short-Term Shoreline Change Rate Erosion Accretion End Point Rate Transect Digital Shoreline Analysis System DSAS U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Coastal and Marine Science Center WHCMSC National Assessment of Shoreline Change Project ISO 19115 Topic Category oceans environment geoscientificInformation Marine Realms Information Bank (MRIB) Keywords effects of coastal change coastal processes shoreline accretion shoreline erosion USGS Thesaurus coastal processes erosion shoreline accretion Coastal and Marine Ecological Classification Standard (CMECS) Continental/Island Shore Complex None Oregon Cascade Longview Umpqua Siletz Seb Arago Tillamook Bay Pacific Coast Pacific Northwest Columbia River United States North America Coastal and Marine Ecological Classification Standard (CMECS) Oregon, Washington, Vancouver Coast and Shelf Ecoregion Coastal and Marine Ecological Classification Standard (CMECS) Substrate None Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. U.S. Geological Survey mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-548-8700 508-457-2310 Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850 Peter Ruggiero Meredith Kratzmann Emily Himmelstoss E. Robert Thieler David Reid 2013 Open-File Report 2012-1007 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/of/2012/1007/ E.R. Thieler E.A. Himmelstoss J.L. Zichichi A. Ergul 2009 Open-File Report 2008-1278 Reston, VA U.S. Geological Survey Current version of software at time of use was 4.2 https://pubs.er.usgs.gov/publication/ofr20081278 https://woodshole.er.usgs.gov/project-pages/DSAS/ The attributes of this dataset are based on the field requirements of the Digital Shoreline Analysis System and were automatically generated by the software during the generation of the transect layer or during the calculation of shoreline change rates performed by the software. In this short-term analysis, a customized module which is not currently included in DSAS v4.2 was used to compute the end point confidence interval (ECI) associated with the end point rate. These data were generated using DSAS v4.2, an automated software program which does not perform checks for fidelity of the input features. The transects were visually inspected and sometimes manually adjusted within a standard ArcMap edit session to adjust the position at which an individual transect intersected the shorelines. This dataset contains the transects automatically generated by the DSAS software application that were used to calculate short-term shoreline change rates for the region. Additional transects may have been generated but did not intersect the two shoreline dates specified (1967 and 2002) to calculate short-term rates. Transect Features Generated using DSAS v4.2 in ArcMap 9.3. Parameters Used: baseline layer=OR_baseline, baseline group field=NULL, transect spacing=50 meters, transect length=1000 meters, cast direction=AUTO-DETECT, baseline location=offshore, cast method=smoothed, smoothing distance=50 meters, flip baselines=not selected. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: https://pubs.er.usgs.gov/publication/ofr20081278. This process step and all subsequent process steps were performed by the same person: Meredith Kratzmann. 20110922 Meredith Kratzmann U.S. Geological Survey mailing address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-548-8700 508-457-2310 mkratzmann@usgs.gov Some transects did not intersect all shorelines at the default transect length. These transects were manually lengthened in an edit session using standard editing tools in ArcMap v9.3. 20110923 Rate Calculations Performed in DSAS v4.2 using ArcMap v9.3 on Selected Shoreline Features Only (1967 and 2002). Shoreline uncertainty table added to ArcMap project (OR_shorelines_uncertainty.dbf) and used by DSAS to apply bias-correction to distance measurements established by transects. Parameters Used: shoreline layer=OR_shorelines, shoreline date field=Date_, shoreline uncertainty field name=Uncy, the default accuracy=10 meters, shoreline intersection parameters=closest, stats calculations=[End Point Rate (EPR)], shoreline threshold=2, confidence interval=90%, Output rate table name=OR_transects_rates_20111208_155640. 20111208 Shoreline rates table (OR_transects_rates_20111208_155640.dbf) was joined to the transect feature class in ArcMap v9.3 by right-clicking on the transect layer > joins and relates > join > join attributes from a table. Parameters: join field - ObjectID; table to join - OR_transects_rates_20111208_155640; field in table: TransectID; join options - keep only matching records. 20111208 The joined transect feature class was exported to a shapefile in ArcMap v9.3 by right-clicking the transect layer > data > export data, permanently linking the joined rate fields to the transect attribute table. 20111208 The exported transect shapefile was projected in ESRI's ArcToolbox (v.9.3) > Data Management Tools > Projections and Transformations > Feature > Project. Parameters: input projection - UTM zone 10N (WGS 84); output projection - geographic coordinates (WGS 84); transformation = none. 20111209 Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. 20170823 U.S. Geological Survey Alan O. Allwardt Contractor -- Information Specialist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060 831-460-7551 831-427-4748 aallwardt@usgs.gov Added keywords from Coastal and Marine Ecological Classification Standard (CMECS) to metadata. 20180426 U.S. Geological Survey Alan O. Allwardt Contractor -- Information Specialist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060 831-460-7551 831-427-4748 aallwardt@usgs.gov Edits to the metadata were made to fix any errors that MP v 2.9.46 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Added a landing page link as the first link in the identification section. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. Fixed cross-referece information. Attempted to modify http to https where appropriate. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. 20180510 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Crossref DOI link was added as the first link in the metadata. 20191118 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20200908 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Vector String 7113 0.000001 0.000001 Decimal degrees D_WGS_1984 WGS_1984 6378137.000000 298.257224 OR_transects_ST Transects are automatically generated by DSAS at a 90 degree angle to the user-specified baseline. U.S. Geological Survey FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. OBJECTID Internal feature number generated for each row of the transect attribute table when stored as a feature class in a geodatabase. This value is the common attribute field when joining to the TransectID value in short-term results output table calculated by DSAS. U.S. Geological Survey Sequential unique whole numbers that are automatically generated. BaselineID Unique identification number of the baseline segment. If BaselineID=0 no transects will be generated. Used by DSAS to determine transect ordering alongshore if multiple baseline segments exist. U.S. Geological Survey 0 unlimited TransOrder Assigned by DSAS based on ordering of transects along the baseline. Used to allow user to sort transect data along the baseline from baseline start to baseline end. U.S. Geological Survey 0 unlimited ProcTime Assigned by DSAS automatically to record the date and time a transect was processed. U.S. Geological Survey no value or 0 (when transect was manually created by user) unlimited (values based on time and date of automatic generation) Autogen Assigned by DSAS to indicate whether or not a transect was automatically created by DSAS (1= transect was auto generated by DSAS; blank or 0=transect was not auto-generated). U.S. Geological Survey blank or 0 1 StartX Assigned by DSAS automatically to record the X coordinate of the beginning of the transect in meter units (UTM zone 10N, WGS 84). If a transect position has been adjusted during the editing process, the coordinate in the attribute table is not updated automatically. This field was manually updated using Data East XTools v.5.3.0 to reflect the new position of any adjusted transects. U.S. Geological Survey Values based on data set extent. StartY Assigned by DSAS automatically to record the Y coordinate of the beginning of the transect in meter units (UTM zone 10N, WGS 84). If a transect position has been adjusted during the editing process, the coordinate in the attribute table is not updated automatically. This field was manually updated using Data East XTools v.5.3.0 to reflect the new position of any adjusted transects. U.S. Geological Survey Values based on data set extent. EndX Assigned by DSAS automatically to record the X coordinate of the end of the transect in meter units (UTM zone 10N, WGS 84). If a transect position has been adjusted during the editing process, the coordinate in the attribute table is not updated automatically. This field was manually updated using Data East XTools v.5.3.0 to reflect the new position of any adjusted transects. U.S. Geological Survey Values based on data set extent. EndY Assigned by DSAS automatically to record the Y coordinate of the end of the transect in meter units (UTM zone 10N, WGS 84). If a transect position has been adjusted during the editing process, the coordinate in the attribute table is not updated automatically. This field was manually updated using Data East XTools v.5.3.0 to reflect the new position of any adjusted transects. U.S. Geological Survey Values based on data set extent. Azimuth Assigned by DSAS to record the azimuth of the transect measure in degrees clockwise from North. If a transect position has been adjusted during the editing process, the azimuth value in the attribute table is not updated automatically. This field was manually updated using Easy Calculate 5.0 (www.ian-ko.com, polyline_Get_Azimuth_9x.cal) to reflect the new azimuth of any adjusted transects. U.S. Geological Survey 0 360 SHAPE_Leng Length of feature in meter units (UTM zone 10N, WGS 84). ESRI 664.990451 2761.536051 TransectId Same value as ObjectID. Used as a permanent and unique identification number for each transect in the output rates table calculated by DSAS. This attribute was used as the common field when joining the rates table (.dbf) to the transect feature class in a geodatabase. U.S. Geological Survey Positive real numbers that are automatically generated. EPR The end point rate is calculated by dividing the distance of shoreline movement by the time elapsed between the two shorelines. The rate is reported in meters per year with positive values indicating accretion and negative values indicating erosion. U.S. Geological Survey -4.38 26.53 ECI Describes the uncertainty of the reported end point rate in meters. The shoreline uncertainties for the two positions used in the end point calculation are each squared, then added together (summation of squares). The square root of the summation of squares is divided by the number of years between the two shorelines. This result is reported as the confidence of the end point rate calculation (ECI). U.S. Geological Survey 0.283 1.071 All calculations for length are in meter units and were based on the UTM zone 10N WGS84 projection. U.S. Geological Survey U.S. Geological Survey mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-548-8700 508-457-2310 Downloadable Data Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Shapefile ArcGIS 9.3 ESRI polyline shapefile This WinZip (version 9.0) file contains a shapefile of transects generated by the Digital Shoreline Analysis System including short-term rate calculations for Oregon and associated metadata. Use WinZip or pkUnzip 1 https://pubs.usgs.gov/of/2012/1008/data/OR_transects_ST.zip None This zip file contains data available in Environmental Systems Research Institute (ESRI) polyline shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. 20240318 U.S. Geological Survey Meredith Kratzmann mailing address

384 Woods Hole Road

Woods Hole MA 02543 USA 508-548-8700 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318) FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time