happythoughts 0 #1 March 24, 2008 clicky People speak about corn as a renewable resource. Maybe not. QuoteIt was named in 1899 by N.H. Darton from its type locality near the town of Ogallala, Nebraska. It waters one fifth of U.S. irrigated land. QuoteThe Ogallala Aquifer is being depleted at a rate of 12 billion cubic meters (420 billion ft3) per year, amounting to a total depletion to date of a volume equal to the annual flow of 18 Colorado Rivers. Some estimates say it will dry up in as little as 25 years. QuoteAt some places the water table was measured to drop more than five feet (1.5 m) per year at the time of maximum extraction. Quote Share this post Link to post Share on other sites
Squeak 17 #2 March 24, 2008 that does not mention anywhere what the refill rate it. It can drop 1.5m per year, but if the refill rate in the catchemnt area is 1.5 per year it evens out.You are not now, nor will you ever be, good enough to not die in this sport (Sparky) My Life ROCKS! How's yours doing? Quote Share this post Link to post Share on other sites
happythoughts 0 #3 March 25, 2008 QuotePresent-day recharge of the aquifer with fresh water occurs at a slow rate; this implies that much of the water in its pore spaces is paleowater, dating back to the last ice age. QuoteThe USGS estimated that total water storage was about 2,925 million acre feet (3,608 km³) in 2005. This is a decline of about 253 million acre feet (312 km³) (or 9%) since substantial ground-water irrigation development began, in the 1950s. In some areas, it has actually risen, but overall it declined. QuoteIn the more humid areas water levels have actually risen since 1980 (i.e., eastern and central Nebraska and south of Lubbock, Texas). Agricultural dependence on this valuable water source needs to change within a generation in order to save this invaluable groundwater source. Quote Share this post Link to post Share on other sites
Andrewwhyte 1 #4 March 25, 2008 Quotethat does not mention anywhere what the refill rate it. It can drop 1.5m per year, but if the refill rate in the catchemnt area is 1.5 per year it evens out. Depletion rates are usually net of inflows. Quote Share this post Link to post Share on other sites
