I'm not intimately familiar with the California climate, but this project in India dealt with infrequent rainfall and capturing runoff: http://www.permaculturer

I'm not intimately familiar with the California climate, but this project in India dealt with infrequent rainfall and capturing runoff: http://www.permaculturereflections.com/2009/07/india-talupula-site-part-iii.html http://www.permaculturereflections.com/2009/07/india-talupul...