GeoAccess Division

                                Geomatics Canada
                     Department of Natural Resources Canada

				   * * * * *


                          NATIONAL ATLAS DIGITAL DATA



	This directory contains 1:20 million scale National Atlas
	digital base map data for Canada. The data was produced by the
	GeoAccess Division, formerly the National Atlas Information
	Service (NAIS), of Geomatics Canada.



	GENERAL INFORMATION
	Scale:			1:20 000 000
	Data Format:		uncompressed dxf (.dxf)
	Data Type:		2D layered vector data
	Geographic Extent:	Canada
	Transfer Method:	ISO 9660 CD-ROM
				3.5" diskette (DOS)
				8 mm cassette (UNIX)

	Date:			Information updated as of 1996-1997.


	LIABILITY
	The Government of Canada and the Department of Natural 
	Resources Canada assumes NO liability for any errors or
	ommisions in the digital data it provides to users.

	SOURCE
	Derived from larger scale maps of the National Atlas of Canada
	series. Other sources of data were usually taken from maps and
	statistical documents produced by Canadian governmental agencies.

	ACCURACY/PRECISION
	Co-ordinate Precision:	+/- 1350 metres
	Co-ordinate Accuracy:	+/- 27 kilometres

	PROJECTION INFORMATION
	Projection:		unprojected - Geographical coordinates
                                (Latitude/Longitude)




	THEMATIC COVERAGES

	Note: Disregard any layers not listed below.
	      
	      Occasionally small errors may be encountered but should
	      not effect the quality of the data set.

	      If you discover any discrepancies we would appreciate it
	      if you would notify us so that we can amend our master 
	      files. Thank you.


       *suffix "g"=geographic coordinates only (no projection)
	
	File Name	Layer	Type/Description
	---------	-----	----------------


	boundg.dxf		LINE

			35	International boundaries
			36	Provincial/Territorial boundaries
			37	District boundaries
			38	Undemarcated boundaries
			39	Canada-Greenland(Kalaallit Nunaat)
	


	draing.dxf		LINE

			1	Partial frame line
			13	Offshore islands 
			14	Islands within lakes
			15	Coastline 
                        16      Lake shorelines
                        17      Rivers
			100	Foreign drainage (selected)
 


	drpolyg.dxf		POLY

			11	Canadian landfill
			12	Foreign landfill
			16	Waterfill



	frameg.dxf		LINE

			1       Neatline of Canada map
                  2       Inside border line
                  3       Outside border line

                        POLY

			0      Neatline to outside border fill
                  16     Background area fill to neatline



	gridg.dxf		LINE

			8	Projection lines(20 degree lat interval)
						    (30 degree long interval)
			9	Arctic Circle



	iceg.dxf		LINE

			0	Connector line
			1	Bounding box frame
			15	Coastline
			28	Limit of permanent Polar Ice

				POLY

			16	Water fill for bounding box
			28	Permanent Polar Ice fill (on water)
			1000	Islands (excluding polar ice)



	leafg.dxf		POINT

			12	TransCanada highway marker




	nunbdyg.dxf		LINE

			36	Nunavut boundary




	rail_fng.dxf      LINE/FOREIGN
 
                        81      Railways
 


	railg.dxf		LINE

			80	Railways



	road_fng.dxf      LINE/FOREIGN
 
                  66      Main roads
                  67      Secondary roads
			72	Ferries
 
 

	roadg.dxf		LINE

			0	TransCanada highway marker road section
			66	Main roads
			67	Secondary roads
			72	Ferries


	twng.dxf		POINT

			90	Place 



	twnarcg.dxf		LINE

			95      Federal capital outline
                  96      Provincial/Territorial capital outline
                  97      Nunavut capital outline

				POLY

			95      Federal capital star fill
                  96      Provincial/Territorial capital star fill
			97	  Nunavut capital star fill                        


				   * * * * *

	If you have any questions or comments regarding the content or
	quality of this data set or the availablity of other Digital
	Geographic products, please contact:



                            GeoAccess Division
                             Geomatics Canada
                         Rm 650-615 Booth Street
                              Ottawa, Ontario
                                 Canada
                                K1A  0E9


     			
           	              
		   Internet email: - info@geogratis.gc.ca
		   



	NOTICE:  The Data provided is protected under the Copyright
		 Act of Canada.

		 It is NOT for redistribution or resale.

		 Other restrictions may apply. In order to ensure that 
		 your intended usage conforms with the Copyright Act of
		 Canada and/or any other rules, regulations, etc. that
		 may be applicable, please contact us at the above
		 address.


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