TerraLogic GIS, Inc. (data compilation) 2004 vector digital data bathpy_nca\\VAN\GIS\groundfish\data\bathpy_nca.shp These data depict 10-meter depth zone polygons in the marine areas off California. These data were developed for Pacific States Marine Fisheries Commission in cooperation with the National Marine Fisheries Service Northwest Region and the Pacific Fishery Management Council in support of an Environmental Impact Statement (EIS) to consider the designation and conservation of Essential Fish Habitat (EFH) for Pacific Coast Groundfish. These data were consolidated and integrated in a GIS format to support spatially explicit groundfish habitat modelling and impacts assessment on a coastwide scale. en unknown ground condition complete unknown -126.186284 -123.000169 42.354192 38.204208 -15207.491300244985.040280-197409.716551263970.672594 seafloor bathymetry marine essential fish habitat (EFH) REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords. west coast California Northwest Pacific Ocean none none Pacific States Marine Fisheries Commission mailing and physical address

205 SE Spokane Street, Suite 100

Portland OR 97202 U.S.A. (503) 595-3100 (503) 595-3232 Cooperators and funders who contributed to development of these data, include Pacific States Marine Fisheries Commission, and National Marine Fisheries Service, Northwest Fisheries Science Center, Southwest Fisheries Science Center, Northwest Region, and Southwest Region. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535 Shapefile All depth zone polygons were queried to ensure that the difference between the maximum and minimum depth values was exactly 10 meters. Depth values were visually assessed by comparing to source contour data and shaded according to depth ranges. Several polygons found to have erroneous values were corrected. Data were provided without metadata, so data processing procedures used to create contours are unknown. Data are comprehensive for the spatial extent Horizontal accuracy was not assessed, so the positional accuracy is unknown. Vertical accuracy was not assessed, so the vertical accuracy is unknown. California Department of Fish and Game (CDFG) contour data provided by Center for Habitat Studies, Moss Landing Marine Lab. unknown vector digital data digital files provided by ftp unknown ground condition California 10-meter depth contours Provide depth contours which will delineate depth zones for areas off California. California Department of Fish and Game (CDFG) Marine Region GIS 2000 raster digital data digital files downloaded by ftp 2000 ground condition California bathymetry grid Provide depth values for updating attributes of bathymetry polygons (1) Project source contour lines to West Coast Albers projection (2) Due to the large size of the source contour data set and limitations of ArcInfo software, in order to further process the source contour data, we had to subset the contour lines into ten smaller coverages by depth. (Could not subset geographically because data were too large for ArcInfo topological functions, such as CLIP). Each depth subset had one overlapping contour line from the adjacent subset(s). (3) To further reduce the size of the data, we generalized the contour lines. Used ArcInfo GENERALIZE function with 150 meter weed tolerance, bendsimplify algorithm, and errorchecking (avoids creation of intersecting lines). Various weed tolerance distances were tested: 80, 100, 150, and 200 meters. 150 meters was the best compromise to significantly reduce the size of the data without significantly change the locations of the contour data. To avoid slivers due to overlap, the edge contours were replaced by the contours from adjacent subset coverages. (4) Each depth subset was clipped and merged with a box used to create an outer boundary for the depth zone polygons. (5) A series of AML programs were used to assign the depth values of the adjacent contour lines to the minimum and maximum depth attributes of each polygon. If the polygon had only one adjacent contour line, the adjacent/surrounding polygon was used to determine whether the inner polygon was a high or low point in the relief and the maximum or minimum depth zone value was assigned accordingly. (6) The ten depth polygon subset coverages were clipped into regional coverages for Northern, Central and Southern California. The depth subset coverages for each region were merged to create complete depth polygon coverages for each of the three regions. (7) A few polygons remained without correct minimum and maximum depth zone values. These values were assigned using CDFG bathymetry grid values and the ArcInfo LATTICESPOT function. (8) Checked that all polygons had maximum and minimum depth zone values that were exactly 10 meters apart. Several polygons were corrected manually in ArcEdit. California 10-meter depth contours California bathymetry grid 2003 Metadata imported.C:\DOCUME~1\van\LOCALS~1\Temp\xmlD.tmp2005071514483400 Vector G-polygon 1977 GT-polygon composed of chains 1977 SimplePolygonFALSE1977FALSEFALSE coordinate pair 0.001024 0.001024 meters Albers Conical Equal Area32.00000048.000000-126.00000040.0000000.0000000.000000 North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983North_American_1983_Albers bathpy_nca attribute table for bathymetry polygons Feature Class1977 FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features. ZNMINDEPM Minimum depth of the 10-meter depth zone polygon 0 3840 meters Number193 ZNMAXDEPM Maximum depth of the 10-meter depth zone polygon 0 3850 meters Number193 Pacific States Marine Fisheries Commission mailing and physical address

205 SE Spokane Street, Suite 100

Portland OR 97202 (503) 595-3100 (503) 595-3232 ESRI Shape File no compression applied 71 MB 70.846 CD-ROM Downloadable Data 20050715 TerraLogic GIS, Inc. Allison Bailey mailing address

P.O. Box 264

Stanwood Washington 98292 U.S.A. 425-673-4495 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile enhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile {84F06836-3742-4F1E-B0D0-2138D6CC09D6}2005071514483400FALSE20050715144834002005071514483400Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535bathpy_nca-15207.4913244985.04028263970.672594-197409.7165511-126.186284-123.00016942.35419238.2042081ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\VAN\GIS\groundfish\data\bathpy_nca.shpLocal Area Network70.846ShapefileNorth_American_1983_Albers197720050715