DATE: 10/25/2002 DATA LIBRARY: \GARCIA\ROADS COVERAGE NAME: Roads SOURCE: Appended 1:24,000 Scale USGS DLG Data Feb, 2000. METADATA FILE: ROADS.TXT COVERAGE DESCRIPTION: USGS DLG and digitized base data captured at 1:24,000 augmented with features digitized at 1:12,000; boundaries and feature representations of the record derived from Timber Harvesting Plans (THPs). Coverages include hydrography, roads, timber harvest boundaries (silvicultural units, yarding methods, ownership, completion status) Purpose:: Contribute to an assessment of cumulative effects from timber harvesting in sensitive watersheds. Supplemental Information:: Data is derived from maps contained in Timber Harvest Plans, reflects that record, and is generally limited to what is required in the California Forest Practice Rules for that particular year. 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: USGS DLG Source Projection: Universal Transverse Mercator Zone 10 Source Units: Meters Source Scale: 1:24,000 DATA DICTIONARY: NOTE: Items common to all ARC/INFO coverages: FNODE#, TNODE#, LPOLY#, RPOLY#, LENGTH, COVER#, and COVER-ID are not described here. ARC ATTRIBUTE TABLE (.AAT) COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC A 1 FNODE# 4 5 B - 5 TNODE# 4 5 B - 9 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 8 18 F 5 25 ROADS# 4 5 B - 29 ROADS-ID 4 5 B - 33 CFF_CODE 4 5 B - 37 SOURCE_MAP 20 20 C - 57 ROAD_NAME 20 20 C - 77 RD_YR 4 4 I - 81 PERM_CLASS 2 2 C - 83 CODESOURCE 15 15 C - Coverage Feature Item Name Item description Item Code ROADS Line CFF_CODE Road Classification 100 = Primary Road (4 + Lanes) 103 = Secondary Road (2 -3 Lanes) 105 = Improved (Rocked) 106 = Unimproved (seasonal) 107 = Temporary & 4WD 115 = Road Interchange 137 = Bridge SOURCE_MAP Source map USGS 24K DLG USGS 24K DIG THP MAP 95-003 etc. ROAD_NAME Road Name Actual Name / NONE RD_YR Year Road Built Actual Year Built as part of THP PERM_CLASS Abandoned Roads AP = Permanent (rocked) AS = Seasonal Bridge BR = Bridge Existing Roads EP = Permanent (rocked) For. Prac. Perm. ES = Seasonal Class ET = Temporary & 4WD Proposed Roads PP = Permanent (rocked) For. Prac. Perm. PS = Seasonal Class PT = Temporary & 4WD Primary Road PR = Primary Road (4 + Lanes) Road Interchange RI = Road Interchange Secondary Road SR = Secondary Road (2-3 Lanes.) CODESOURCE Coding Source Source of coding i.e. THP, USGS etc. DOCUMENTATION DATES: 10/25/2000: Coverage clipped to fit project study area Contact Name: P. J. Trichilo Institute for Fisheries Resources 791 Eighth Street Ste. N Arcata, CA 95521 (707) 822-9428