Reuters: California almond farmer Marvin Meyers has moved into banking — water banking that is. In the heart of the San Joaquin Valley, the world’s most productive agricultural region, Meyers bought land to collect water in wet years and recharge a shallow aquifer. The water authority takes his supply for nearby farmers and gives him credit to irrigate from a canal at his orchard 15 miles away. It cost Meyers $7 million and lots of headaches, but now he is the envy of farmers facing a …