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Whiskey, Tango, Foxtrot | I don't know when they did them here, but it couldn't have been until the 30's for a lot of the valley given that much of it was still underwater.
I've been amazed at how accurate they are as to where soils changed.
The yield estimates were probably good given the methods used then. One big thing that has changed is the irrigation methods, sprinklers, laser leveling etc that has allowed for some of the weaker ground to become more productive.
When this area was homesteaded, they divided up into farm units that varied in size depending upon what was needed to provide a living for one family. Good flat uniform places were around 70 acres, all the way up to 140 acres in alkali or sand ground. I've always been amazed at how close they got them. I own some 90 acre places, and they are capable of producing about what some 70's are. If I was to trade, any of them regardless of size would be a pretty even trade. | |
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Where did soil survey maps come from?
