Layer Name:	100 Foot Contours

Coverage Name:	<isl>CNTRS100	

Layer Type:	Line

Status:		Complete

Geog. Extent:	main Hawaiian Islands

Projection:	Universal Trans Mercator, Zone 4 (Meters)

Datum:		NAD 83

Description:	100 foot contours for the main Hawaiian Islands.
		
Source:		USGS Digital Elevation Models (DEMs), 1:24,000, 10 meter.		

History:	Processed by OP staff from the 1:24,000 10 meter USGS
		Digital Elevation Models, using the following procedure:
		
		1.  DEM files were converted to GRID format using ArcToolbox.

		2.  GRID files were merged to form islandwide GRIDs using the
		command,  GRID: <out_grid> = merge(in_grid1, in_grid2,...)

		3.  GRIDs in meters were converted to feet using the command,
		GRID: <out_grid> = <in_grid> * 3.28

		4.  GRIDs were clipped by the coastline coverage using,
		GRID:  GRIDCLIP <in_grid> <out_grid> cover <clip_cover>

		5.  To smooth the GRIDs, ARC: FILTER <in_grid> <out_grid> LOW 2

		6.  To create the contours,
		ARC: LATTICECONTOUR <in_grid> <out_cover> 100 100 contour 0.002

		
Attributes:	Arcs:
		
		FNODE#		From Node Number (for Arc/Info use)
		TNODE#		To Node Number (for Arc/Info use)
		LPOLY#		Left Polygon Number (for Arc/Info use)
		RPOLY#		Right Polygon Number (for Arc/Info use)
		LENGTH		Length (meters)
		CNTRS100#	Arc Internal Number (for Arc/Info use)
		CNTRS100-ID	Arc ID (for Arc/Info use)
		CONTOUR		Contour Value in Feet (increments of 100 feet)
		
		
		
Contact:	Joan Delos Santos, Office of Planning, State of Hawaii, 
		PO Box 2359, Honolulu, Hi.  96804; (808) 587-2895.
		email:  JDelos_Santos@dbedt.hawaii.gov