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Old 07-08-15, 04:32 AM   #119
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Join Date: Jul 2015
Location: Washington
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I've never seen them graphed like that, those are good visuals. Is there a place with that detailed data for Washington state?

The data I have is very basic, it comes from geological survey map for my area with soil type distributions and soil series descriptions. I've also done some testing of the temps from my water supply over the past year.

Here's an excerpt from the soil series that covers the majority of my land:

"Elevations ranging from sea level to 1600 feet. They have a mild climate with an average precipitation of 30 to 60 inches; cool dry summers and mild, wet winters. The average January temperature is 36 degrees F.; the average july temperature is 63 degrees F.; and the mean annual temperature is about 50 degrees F. The frost free season ranges from 140 to 220 days."

Elsewhere in the document they point out the thickness of the soil layer of this type is 15 to 25 inches, so those temps are very near the surface. Due to the depth, the water from my well stays at a much more consistent temperature (very close to the annual mean).
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