![]() ![]() In drought years, more than 80% of irrigation water comes from underground.Īfter decades of pumping, underground water resources are dwindling. Productivity like that is only possible because farmers augment the valley’s 5 to 10 inches (12 to 25 centimeters) of annual rainfall with extensive groundwater pumping. ![]() farmland, yet it grows an amazing 40% of the nation’s table fruits, vegetables, and nuts annually. The Central Valley makes up only 1% of U.S. The team found that the key to distinguishing between these underground sources of water relates to patterns of sinking and rising ground levels in this heavily irrigated agricultural region. The research team studied California’s Tulare Basin, part of the Central Valley. The method sorts out how much underground water loss comes from aquifers confined in clay, which can be drained so dry that they will not recover, and how much comes from soil that’s not confined in an aquifer, which can be replenished by a few years of normal rains. Scientists have produced a new method that holds the promise of improving groundwater management – critical to both life and agriculture in dry regions. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |