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RE: Thornthwaite Index

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Try here.
Looked around a bit, couldn't find exactly the Thornthwaite Index map, but a whole lot of other useful stuff.
-----Original Message-----
From: gskwy(--nospam--at) [mailto:gskwy(--nospam--at)]
Sent: Monday, April 11, 2005 7:19 PM
To: seaint(--nospam--at)
Subject: Thornthwaite Index

When using the PTI method to design, the soil parameters em and Ym are based on the Thornthwaite Index.
The PTI manual has a Thornthwaite Index map that uses data from the years 1954  to 1974.  Is this the most recent map or is there a more recent one commercial available from the someone like the Soil Conservation Society?
Gail Kelley