HYDROGRAPHY ================================== COVERAGE NAME: STM24 FEATURE TYPE: LINE SOURCE: Appended 1:24,000 Scale USGS DLG Data Feb, 2000. MINIMUM MAPPING UNIT: 1:24,000 AREAL EXTENT: Hydrologic Unit as defined by Calwater v2.2n DATE OF LAST UPDATE: 3/6/2000 INFO ITEMS: INPUT OUTPUT DATA DECI DESCRIPTION ITEM NAME WIDTH WIDTH TYPE MALS ---------- ----- ------ ---- ---- ------------------------------------ FNODE# 4 5 B - Arc/Info Standard Items TNODE# 4 5 B - Arc/Info Standard Items LPOLY# 4 5 B - Arc/Info Standard Items RPOLY# 4 5 B - Arc/Info Standard Items LENGTH 8 18 F 5 Arc/Info Standard Items HYDRO_ME1# 4 5 B - Arc/Info Standard Items HYDRO_ME1-ID 4 5 B - Arc/Info Standard Items MINOR1 6 6 I - USGS DLG MINOR1 Code MINOR2 6 6 I 0 USGS DLG MINOR1 Code NAME 30 30 C - Stream Name (Major Tribs) STRM_TYPE 12 12 C - perennial or intermittent DATA_SOURCE 10 10 C - DLG or JDSF DATA_SOURCE: DLG -Where source is DLG, 1:24k DLG quads were appended together JDSF-Where source is JDSF, the Jackson Demonstration State Forest GIS data set was used. This data is also based on 1:24k USGS DLG data. Methods: Large Water bodies and double-line streams were centerlined using the least cost path function in Arc/Info GRID to support hydrologic modelling functions. All Stream segments have been connected and oriented to flow downstream. Stream names were conflated from EPA Reach File 3 1:100k data. It is hoped that this data set will eventually be incorporated into the EPA National Hydrography Data set. Anyone interested in contributing to this effort should contact CDF- FRAP. CONTACT: Eric Spry, GIS Specialist CDF Fire and Resource Assessment Program 1920 20th Street, Sacramento, CA 95814 eric_spry@fire.ca.gov COORDINATE SYSTEM DESCRIPTION Projection UTM Units METERS Spheroid CLARKE 1866 Datum NAD27 Zone 10 central meridian -120 0 0.00 latitude of origin 0 0 0.000 longitute of origin 0 0 0.000 false easting (meters) 0.00000 false northing (meters) 0.00000 DOCUMENTATION DATES: February 2002: Reprojected to UTM NAD27 (no shift), and clipped to KRIS Project study area. Contact Name: GIS Analyst Institute for Fisheries Resources (IFR) 791 Eighth Street Arcata, CA 95521 Contact's Phone: (707) 822-9428