Layer Name:	Color Hillshades - 10 meter jpgs

Coverage Name:	clrhill-<isl>.jpg

Layer Type:	jpeg

Geog. Extent:	Main Hawaiian Islands

Projection:	Universal Trans Mercator, Zone 4 (Meters)

Datum:		NAD83

Description:	Color Hillshade GRIDs
		
Source:		Hillshade GRIDs created by ESRI Honolulu staff using USGS 10 meter DEMs, 2008.  

Methodology:    Used the following procedure:
            
                Using the following "Swiss Hillshade" tool from the ESRI Mapping Center (mappingcenter.esri.com):

                http://blogs.esri.com/Support/blogs/mappingcenter/archive/2008/10/07/updated-hillshade-toolbox.aspx

		Ran tool above on the 10 m DEM, as described in the tool directions, resulting in two additional rasters:
                     a high-low raster and a filtered hillshade

                Applied a color stretch on the DEM elevation, using a color ramp downloaded from the mapping center.	

                Modified the color ramp by adding brown-gray colors for higher elevations in order to account for large
                     elevation difference of Maui and Hawaii in comparison to other, lower islands

                Downloaded Rainfall layer from State GIS website (http://hawaii.gov/dbedt/gis/rainfall.htm)

                Using Spatial Analyst Topogrid tool, converted isohyets into grid

		Applied a color ramp to the rainfall grid

		Applied transparencies to all layers (high-low, filtered hillshade, elevation, rainfall) until desired                      effect was achieved.

                Exported dataframe from ArcMap as a jpg with a world file.


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