{E4082D19-6309-45E2-A106-6371B72EB87D}2003122310243000FALSE20040325094533002004032509455800Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700enA 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 shapefile provides the tracklines along which the SeaBOSS sampler collected video.David C. Twichell2004jd2000_vidtracksvector digital dataVeeAnn A. CrossVeeAnn A. CrossDavid C. Twichell2004Open-File Report2004-1014Woods Hole Science Center, Woods Hole, MAU.S. Geological Survey ground condition2000092520000927CompleteNone planned-120.630967-119.83580045.84438345.691017-120.630967-119.83580045.69101745.844383GeneralArcViewCMGPCoastal and Marine Geology Programgrab sampleimageslakenavigationOF 2004-1014Open-File Reportpolylinereservoirsedimentsediment sampleshapefileU.S. Geological SurveyUSGSWoods Hole Science CenterGeneralColumbia RiverJohn Day DamJohn Day ReservoirLake UmatillaMcNary DamNorth AmericaOregonUnited StatesWashingtonNone.The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.ShapefileDavid C. TwichellU.S. Geological SurveyOceanographermailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598(508) 548-8700 x2266(508) 457-2310dtwichell@usgs.govMicrosoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700jd2000_vidtracks-120.630967-119.835845.84438345.6910171-120.630967-119.835845.84438345.6910171enFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeVeeAnn A. CrossU.S. Geological SurveyMarine Geologistmailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598(508) 548-8700 x2251(508) 457-2310vatnipp@usgs.gov20040325http://www.esri.com/metadata/esriprof80.htmlESRI Metadata ProfileISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetDownloadable Data0.0600.060SHAPEFILEDavid C. TwichellU.S. Geological SurveyOceanographermailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598(508) 548-8700 x2266(508) 457-2310dtwichell@usgs.gov002file://\\REDHOOK\johnday_ofr\data\samples\jd2000_vidtracks.shpLocal Area Network0.060ShapefileVectorSimplePolylineFALSE47FALSEFALSEString47GCS_North_American_1983Decimal degreesNorth American Datum of 1983Geodetic Reference System 806378137.000000298.257222GCS_North_American_198347jd2000_vidtracksFeature Class47FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.IDIDNumber11Automatically sequentially generated number which identifies individual polylines.Software generated.046LINENAMELINENAMENumber2This number corresponds to the sample transect as defined by the SeaBOSS deployment number.Scientist248START_TIMESTART_TIMEString16Start time for the video transect. Time is UTC time in hours:minutes:seconds.data processorcharacter setEND_TIMEEND_TIMEString16End time for the video transect. Time is UTC time in hours:minutes:seconds.data processorcharacter setJDAYJDAYNumber8Julian day of the video recording.data processor269271day20040325When the SeaBOSS sampler and video system was deployed, the UTC start and end times were recorded. At the same time, the GPS navigation data was being recorded to hard disk. Post-cruise, the portions of the GPS data corresponding to SeaBOSS deployments was extracted using and AWK script.Once the navigation of interest was extracted from the GPS files, these points were then converted to a polyline shapefile using an avenue script in ArcView 3.2a. Attributes were added to better describe when the video data was acquired.10 mThe navigational system has an accuracy better than 10m, but because the data acquisition system is towed, this reduces the accuracy of the system.