{FFB50778-F2B4-4E93-9944-0F72B064D0C0}2003122209035700FALSE20040513113405002004051311375100Microsoft 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 is intended to provide the locations for which bottom photographs of the floor of the John Day Reservoir have been acquired.David. C. Twichell2004jd2000vector digital dataVeeAnn A. CrossVeeAnn A. CrossDavid C. Twichell2004Open-File Report2004-1014Woods Hole Science Center, Woods Hole, MAU.S. Geological Survey ground condition2000092520000927CompleteNone planned-120.630400-119.83581745.84438345.691083-120.630400-119.83581745.69108345.844383GeneralArcViewCMGPCoastal and Marine Geology Programgrab sampleimageslakeOF 2004-1014Open-File Reportsedimentsediment sampleshapefileU.S. Geological SurveyUSGSWoods Hole Science CenterpointGeneralColumbia 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 8.2.0.700jd2000-120.6304-119.83581745.84438345.6910831-120.6304-119.83581745.84438345.6910831enFGDC 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.gov20040513http://www.esri.com/metadata/esriprof80.htmlESRI Metadata ProfileISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetDownloadable Data0.0350.035SHAPEFILEThese data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Although all data published in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.David 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\F$\johnday_ofr\data\samples\jd2000.shpLocal Area Network0.035ShapefileVectorSimplePointFALSE48TRUEFALSEEntity point48GCS_North_American_1983Decimal degrees0.0000000.000000North American Datum of 1983Geodetic Reference System 806378137.000000298.257222GCS_North_American_198348jd2000Feature Class48FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.SAMPLE_IDSAMPLE_IDString4Identification representing the sample where JD indicated John Day, and the number represents the sample number.Dave Twichellcharacter setLATITUDELATITUDENumber96Latitude fix for the location of the video image.Correlated value of the time of the video image with the GPS file.45.69108345.844383LONGITUDELONGITUDENumber116Longitude fix for the location of the video image.Correlated value of the time of the video image with the GPS file.-120.630400-119.835817DESCRIPTIODESCRIPTIOString137Description of the video image.Dave Twichellcharacter setIMAGEIMAGEString15Prefix portion of the name of the image.Dave Twichellcharacter setSAMPLE_ACQSAMPLE_ACQString3Indicates whether or not a sediment sample was actually acquired during the deployment of the sampler.VeeAnn A. Crosscharacter setIMAGE_TIMEIMAGE_TIMEString16The time (UTC) indicating when the image was grabbed from the video.Dave Twichellcharacter setHOTLINKHOTLINKString60Path indicating the location of the corresponding bottom photograph hotlinked to this point. This path contains an environment variable specifying the root directory of the project.Data processor.character setThere are 2 instances where there is no image_time. In one case (JD01), the raw GPS was not recorded to hard disk, therefore the sample location is what was recorded in the original log book. In another case (JD20), no video was recorded corresponding to the sampler deployment. Although the attempt was made to grab an image from the video close to when the sediment sample was acquired, this was not always possible. Therefore, these locations refer to when/where the image was acquired, not the corresponding grab sample.20040513A log book was maintained during the sediment sampling portion of the cruise. This logbook contained information about the time that video imagery was being acquired (both in UTC time and VHS time), as well as the time and location fix of when a sampling attempt was made. The complete GPS data was recorded to the hard disk for all but the first sample taken. The video imagery was collected using the USGS SeaBOSS system and recorded to Hi8 8mm tape.In the lab, the SeaBOSS tapes were played back on a Sony EVS-5000 Hi8 video player and the desired sections were written to DVD using a Pioneer PRV-9000 DVD recorder.Blackwood, D.B., Parolski, K.F., 2001, Seabed observation and sampling system: Sea Technology, February 2001, v. 44, no. 2, p. 39-43. Once the DVD was finalized, the DVD was played on a Macintosh G4 computer, and individual frames were grabbed by the Snapz Pro X software. The time presented in these images is the time (hours, minutes, seconds) from the start of the video tape (VHS time).10mThe navigation system is believed to have an accuracy better than 10m, but because the instrument is towed, this reduces the navigational accuracy.