
Images generated courtesy of
| University of Colorado Center for the Study of Earth from Space (CSES)/CIRES  | 
||
|---|---|---|
| 
	Alex Goetz CSES Director goetz@cses  | 
	
	Leanne Lestak GIS Project Manager lestak@cses.colorado.edu  | 
	
	Dave Hulslander Project Technician deh@cses.colorado.edu  | 
Credits:
 
	The cities were obtained from Patricia A. Berger at Oregan State 
	University Biosystems Analysis Group in Bioresource Engineering
	(
	bergerp@alecto.bre.orst.edu).
	 
	The road network and railways are from the 1:1,000,000 scale Digital Chart
	of the World (DCW) which was mapped by the Defense Mapping Agency.  ESRI
	(Environmental Systems Research Institute) digitized the DCW and converted
	it into ARC/INFO format.
	 
	The USGS 1:250,000 DEM data has some inherent problems.  When the data is
	scanned, stripes or terraced features are created.  A low-pass filter was
	used to smooth these features.  The filter creates a more realistic model.
	The filtered DEM was used to create the aspect map and one of the hillshaded
	graphics.
	 
	The maps are not final.  They need scalebars.  Some have a UTM grid overlaid
	such as the slope and aspect maps.  The shaded relief maps don't have grids
	or north arrows at this point: north is in the upwards direction.
	All watershed boundaries, the drainage network and the 1:250,000 DEM
	(Digital Elevation Model) data (which was originally created by the USGS)
	was downloaded from the State of Kansas Geographic Information Systems
	Initiative's Data Access 
	and Support Center (DASC).
	
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| GIF file | PS file | Map Description | |
|---|---|---|---|
| CASES related maps: | |||
![]()  | 
	cases.gif | cases.ps.gz | Shaded relief location map of study area with overlay of rivers in blue, watershed boundary in red and roads and rails in black. | 
![]()  | 
	cities.gif | cities.ps.gz | B/W map of the cites and watershed boundary. | 
![]()  | 
	watershed.gif | watershed.ps.gz | Walnut watershed and sub-watersheds in red, rivers in blue and roads and rails in black. | 
![]()  | 
	aspect.gif | aspect.ps.gz | Aspect relief using low-pass filter on DEM. | 
![]()  | 
	slope.gif | slope.ps.gz | Degree slope generated from non-filtered DEM. | 
![]()  | 
	fre4.gif | fre4.ps.gz | Four highest frequency distributions of slope vs. aspect. | 
![]()  | 
	freq11.gif | freq11.ps.gz | Eleven highest frequency distributions of slope vs. aspect. | 
![]()  | 
	hillshd.gif | hillshd.ps.gz | Non-filtered shaded relief from DEM. | 
![]()  | 
	flthillshd.gif | flthillshd.ps.gz | Low-pass filtered shaded relief from DEM. | 
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