INSTITUTE FOR FISHERIES RESOURCES GIS TECHNICAL WORK GROUP -- GIS METADATA LIBRARY: Garcia COVERAGE NAME: jackson_est_xs.shp METADATA FILE: jackson_est_xs.txt METADATA FILE DATE: March 28, 2002 METADATA PREPARER: Eli Asarian Institute for Fisheries Resources (IFR) 791 Eighth Street Ste. N Arcata, CA 95521 (707) 822-9428 COVERAGE DESCRIPTION: This shapefile shows locations of Dennis Jackson's channel cross sections on the Garcia River in October, 1998. Methods: All features were created in ArcView by using the "add line" tool to create line features by plotting them on top of the digital orthophoto quadrangle (DOQ) file titled "PointArena.sid". Locations for features were based on aerial photographs that had the cross sections labeled. These photographs were located inside a Microsoft Word document title Estuary98.doc, which contained the report, "Analysis of the 1998 Garcia Estuary Cross Sections" by Dennis Jackson. VITAL STATISTICS: Datum: NAD 27 Projection: UTM Units: Meters 1st Std. Parallel: 34 00 00 (34.0 degrees N) 2nd Std. Parallel: 40 30 00 (40.5 degrees N) Longitude of Origin: -120 00 00 (120.0 degrees W) Latitude of Origin: 00 00 00 (0.0 degrees) False Easting (X shift): 0 False Northing (Y shift): 0 Source: see notes above Data Structure: Vector (line) DATA DICTIONARY: NOTE: Items common to all ARC/INFO coverages: LENGTH, AREA, PERIMETER COVER_ (#), and COVER _ID (-ID) are not described here. Structure for attribute table Column Column name 2 XS_NUMBER XS_NUMBER: This field contains the location code used in the report and in KRIS topics to describe the cross-sections (Mouth XS 2, XS 1, XS 2, XS 3, XS 4, XS 5). DATA QUALITY ASSESSMENT: Unknown, it depends on the accuracy of the labeled aerial photo that this layer was created from. The accuracy of converting the digital non-GIS maps to GIS points should be within approximately 5-10 meters?, given the high resolution of the base layer of the source map. Actual accuracy is most likely within 5-30m.