2004 mcn_damvector digital dataVeeAnn A. CrossDavid C. Twichell2004Open-File Report2004-1014Woods Hole Science Center, Woods Hole, MAU.S. Geological SurveyVeeAnn A. CrossDavid C. Twichell A two-week field operation was conducted in the John Day Reservoir on the Columbia River to image the floor of the pool, to measure the distribution and thickness of post-impoundment sediment, and to verify these geophysical data with video photography and bottom sediment samples. The field program was a cooperative effort between the USGS Coastal and Marine Geology Team of the Geologic Division and the USGS Columbia River Research Laboratory of the Biological Resources Division. The data collection was completed aboard the R/V ESTERO during September 13-27, 2000. The interest in sediment accumulation in the reservoir was two-fold. First, it was unknown how effective this reservoir was as a sediment trap to material that otherwise would have been transported down-river to the estuary and eventually to the ocean. The recent erosion of beaches along the Washington coast has been attributed to a decreased contribution of sediment from the Columbia River to the coastal system due to the damming of the river. Second, sediment accumulation on the floors of reservoirs along the Columbia River has been suggested to be diminishing salmon spawning grounds. The extent of changes in habitat since construction of the John Day Dam, however, had not been documented. Common data sets were needed to address both of these questions, and for these reasons this geophysical and sampling program was undertaken. This data set was originally created for the John Day Reservoir Decision Support System by the Biological Resources Division in Cook, Washington. These data are provided here as basemap information indicating the location of the McNary Dam. en 2003 Post-processing date Complete None planned -119.313641 -119.295378 45.941243 45.931230 Description_of_Geographic_Extent: John Day Reservoir, Columbia River -119.313641-119.29537845.93123045.941243 General reservoirdampolylineshapefileU.S. Geological SurveyUSGSBiological Resources DivisionBRDUSACEU.S. Army Corps of EngineersOpen-File ReportOF 2004-1014 General Washington Oregon McNary Dam John Day Reservoir Lake Umatilla Columbia River North AmericaUnited States None Users must assume responsibility for the proper use of this data. The USGS is not responsible for data alterations or improper use of the data made by any user. VeeAnn A. CrossU.S. Geological SurveyMarine Geologistmailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598(508) 548-8700 x2251(508) 457-2310vatnipp@usgs.gov Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700 ShapefileAppropriate credit should be given to BRD and USACE for the creation of this dataset. No report. No report. No report. The accuracy is no better than that of the source information. No report. WARNING: THIS IS NOT THE OFFICIAL METADATA RECORD FOR THE SOURCE DATA, but merely describes from where the source data set was acquired and any post-processing that may have been done by the USGS/BRD/CRRL. The original source from which this data set was derived is a CAD file of McNary Dam. The file was acquired from the US Army Corps of Engineers, Walla Walla District, Walla Walla, WA. The CAD file was reprojected to its present projection and converted to an ArcView line shapefile. No further information is available. 19990701 David E. Rupp U.S. Geological Survey, Biological Resources Division, Western Fisheries Research Center, Columbia River Research Laboratory Research Fishery Biologist Mailing and Physical Address

5501-A Cook-Underwood Rd

Cook Washington 98605 USA 509 538-2299 509 538-2843 David_Rupp@usgs.gov 7:30 a.m. to 4:00 p.m. Monday Through Friday Columbia River Research Laboratory, Western Fisheries Research Center, Biological Resources Division, U.S. Geological Survey1999Cook, WABiological Resources Division, U.S. Geological SurveyCD-ROMThe original source from which this data set was derived is a CAD file of McNary Dam. The file was acquired from the US Army Corps of Engineers, Walla Walla District, Walla Walla, WA. The CAD file was reprojected to its present projection and converted to an ArcView line shapefile. No further information is available. This shapefile was reprojected to geographic, NAD83 using ArcToolbox from ArcGIS 8.2.2003VeeAnn A. CrossU.S. Geological SurveyMarine Geologistmailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598(508) 548-8700 x2251(508) 457-2310vatnipp@usgs.gov Vector SimplePolylineFALSE1453TRUEFALSEString1453 North American Datum of 1983 Geodetic Reference System 80 6378137.000000298.257222 GCS_North_American_1983Decimal degrees There are no attributes of special interest. None mcn_damFeature Class1453FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.FNODE_FNODE_Number11From-node identifier of linear feature carried over from Arc/Info processing and the Arc/Info attribute FNODE_. It is an Arc/Info internal control parameter and has no applicable relevance to the use of the data.software computed0TNODE_TNODE_Number11To-node identifier of linear feature carried over from Arc/Info processing and the Arc/Info attribute TNODE_. It is an Arc/Info internal control parameter and has no applicable relevance to the use of the data.software computed0LPOLY_LPOLY_Number11Internal number of polygon to left of arc carried over from Arc/Info processing and the Arc/Info attribute LPOLY_. It is an Arc/Info internal control parameter and has no applicable relevance to the use of the data.software computed0RPOLY_RPOLY_Number11Internal number of polygon to right of arc carried over from Arc/Info processing and the Arc/Info attribute RPOLY_. It is an Arc/Info internal control parameter and has no applicable relevance to the use of the data.software computed0LENGTHLENGTHNumber195Length of the line in native units. Since the original projection was Washington State Plane South, NAD27, these units are feet.BRD0.007323443.28684MCNDAM_MCNDAM_Number11Value from ARC assigned MCNDAM# from mcndam.dbf table. Generally has no meaning in ArcView shapefile.user defined11453MCNDAM_IDMCNDAM_IDNumber11Value from ARC assigned MCNDAMID# from mcndam.dbf table. Generally has no meaning in ArcView shapefile.user defined1988 VeeAnn A. CrossU.S. Geological SurveyMarine Geologistmailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598(508) 548-8700 x2251(508) 457-2310vatnipp@usgs.gov Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a U.S. Geological Survey server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Downloadable Data0.3860.386SHAPEFILE 20040309 VeeAnn A. CrossU.S. Geological SurveyMarine Geologistmailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598(508) 548-8700 x2251(508) 457-2310vatnipp@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 enlocal timehttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile {EF87D36E-327E-492F-9929-F5B0B9CF2D75}2003110410183800FALSE20040309130835002004030913090500Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700mcn_dam-119.313641-119.29537845.94124345.931231-119.313641-119.29537845.94124345.931231ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\REDHOOK\johnday_ofr\data\basemap\mcn_dam.shpLocal Area Network0.386ShapefileGCS_North_American_1983145320040309