The Wall Street Journal today ran a brief article about California's water situation as part of its Innovations in Agriculture series.

Reporter Jim Carlton noted that California leads the nation in farm revenue, but is also one of the country's driest states, and most populous. How do we do it?

"If you have limited water supplies, you have to be as careful and efficient as you can with it," says Larry Schwankl, UC Cooperative Extension specialist in the Department of Land, Air and Water Resources at UC Davis.

The article described advances in irrigation technology that have enabled farmers to improve irrigation efficiency.