Klamath National Forest
                     Geographic Information System
                          Theme Documentation

                                       Revision Date: November 1996

Theme:               Mean Annual Precipitation



Disclaimer:          
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                     The Klamath National Forest cannot assure the 
                     reliability or suitability of this information 
                     for a particular purpose.  Original data was 
                     compiled from various sources.  Spatial 
                     information may not meet National Map Accuracy 
                     Standards.  This information may be updated 
                     without notification.
                     ***********************************************-
                     *************************

Project Name:        KNF Base Layer

                      IDENTIFICATION INFORMATION

Coverage Extent:     Forest-wide
Source:              Rantz, S.E., 1968 "Mean Annual Precipitation & 
                     Runoff in North Coastal California", USGS, 
                     Washington, DC
Last Update:         1968
Primary Feature Type:Line
Other Feature Types: Polygon
Distribution Limitations:     None
Data Resolution:     1" = 30 Miles
Projection:          UTM Zone 10

Comments:            Mean annual precipitation isobars.
                     Polygons are attributed as well for the purposes 
                     of polygon overlay and analysis.                          SOURCE INFORMATION

Source System:       Arc/ Info
Source Scale:        1" = 30 Miles
Source Projection:   UTM Zone 10
Capture Method:      digitized, see "Theme Generation" below

                         CUSTODIAN INFORMATION

Contact Organization:KNF Supervisor's Office
Resource Contact:    Mark Reichert, Forest Ecosystem Analysis Team 
member
Phone:916-842-6131  Email:  
Address:              1312 Fairlane Road
                      Yreka, CA  96097


GIS Contact:         Dianne Torpin, KNF Supervisor's Office, GIS 
Staff
Phone:916-842-6131  Email:  
Address:             1312 Fairlane Road
                     Yreka, CA  96097


                        PROCESSING INFORMATION

Theme Generation:    Original source scale 1" = 30 miles.
                     Ocular transfer to 1:126,720 scale map.

Lineage:             

For more detailed information, see the Edit Log for this theme.                         ATTRIBUTE INFORMATION
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==

System Software:    Arc/Info

Table Name:.AAT
============================================
Item Name:               annual  Item Type:        integer Item 
Length:   3

 Item Value                 Description

 eg. 40                     Mean annual precipitation in inches




System Software:    Arc/Info

Table Name:.PAT
============================================
Item Name:               annual  Item Type:        integer Item 
Length:   3

 Item Value                 Description

 eg. 45                     Mean annual precipitation in inches.   
                            Value represents the mean of the 
                            surrounding isobars (eg. 40,50 ==> 45).