Precipitation in water form, particularly if it's over time, will really help replenish groundwater. A lot of farms in the central valley are pumping water, an

Precipitation in water form, particularly if it's over time, will really help replenish groundwater. A lot of farms in the central valley are pumping water, and the underground reservoirs are being depleted. Given the Drought/Flood nature of California, I would be surprised if they weren't seriously looking at figuring out how to store excess water in underground aquifer's during their seasons of plenty. http://www.citywestwater.com.au/our_news_storing_water_300m_deep_aquifer_storage_and_recovery.aspx http://www.citywestwater.com.au/our_news_storing_water_300m_... [Edit - See: http://www.fhwa.dot.gov/bridge/TS80-218.pdf http://www.fhwa.dot.gov/bridge/TS80-218.pdf for more than you ever wanted to know about underground storage of water] [Edit 2 - Apparently Storing water underground is a very, very well known approach to water management - http://www.srpnet.com/newsroom/releases/042015.aspx http://www.srpnet.com/newsroom/releases/042015.aspx