Again.....there is not an endless supply of water from the underground water table...............there is not an infinite amount of water on our Earth.....................so not using too much would be very wise........................................hence their effort at making statistical models.........and maybe the real reason for Deep Blue in the 1st place.............chess would be a good starting point........

[PDF]WHAT IS AN IRRIGATION DITCH? Irrigation ditches are manmade ...

https://www-static.bouldercolorado.gov/.../irrigation-ditches-fact-sheet-1-2014041414...

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Apr 14, 2014 - Irrigation ditches are manmade channels that deliver water to homes, farms, industries and other human uses. Most ditches divert water from natural creeks and rivers and bring it to other areas.

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