http://www.cleverscampcamp.com/camping-gear-water/

What is the best place online to find a place for a family reunion with camping, hopefully in California?
I am hoping to rent the land/ranch for 3 days. I just need land with maybe water. We hope to camp and play games like Capture the Flag and Kick the can etc. We can bring our own gear food etc. Any ideas would be great thanks.
http://www.reserveamerica.com/
also
http://irvinelake.net/irv/viewtopic.php?t=15
The first will take you to all public state and forest campgrounds that are reserve-able
the second is a private facility in orange county by irvine lake very nice place
How to Pack for a Camping Trip : How to Purify Water with Iodine While Camping