Sand is available for free at the locations listed in the following links (bring a shovel): Before the rain hits, gather emergency supplies such as flashlights, extra batteries, blankets ...
Sandbags will be available for San Diegans due to a second round of rain forecasted to douse San Diego County late Wednesday ...
Tuolumne and Calaveras counties offer several locations for sand, but people have to bring their own bags and shovels.