[Ruy Dias de Bivar]

***Playas are ephemeral lakes that form when rainwater fills natural clay depressions in the landscape.***

Most likely old buffalo wallows. And if T. Boone Pickens keeps selling his water rights to big Texas cities the aquifer may bet much lower.

[Past Your Eyes]

"Gitz found that this water flows continually downward"

I bet he also noticed that butter melts when it's left in the hot sun.

[Revel]

If they are building factory farms any where near your aquifer then you can kiss its “Cleanness” goodbye.

[anglian]

The Implications of Biofuel Production for United States Water Supplies

The National Academy of Sciences recently published a report titled "Water Implications of Biofuel Production in the United States". The paper outlines impacts and limitations on both water availability and water quality that would follow the pursuit of a national strategy to replace liquid fossil fuels with those made from biomass. COMMITTEE ON WATER IMPLICATIONS OF BIOFUELS PRODUCTION IN THE UNITED STATES http://www.theoildrum.com/node/3285