Last year, I didn't get to enjoy this hike. It wasn't due to my lack of wanting to, but due to lack of rain. Zim Zim falls, located in the Napa Ranch addition to the Knoxville State Wildlife Area north of Lake Berryessa, is entirely fed by rain run-off. It was purchased by the Department of Fish and Game, with help from other non-profit and State agencies. For a history of the Zim Zim name, click here, and scroll to the bottom of the page to 'Zem Zem'.
Great weather, great people, great place. More photos are posted here.