Cars lined O'Byrnes Ferry Road from the Tuolumne side of the bridge to the entrance of Calypso Bay for the BUMP V party at Lake Tulloch Resort Saturday June 23, 2012. Traffic was slowed as pedestrians blocked the roadway walking in large groups. Homeowners in the gated community along O'Byrnes complained that pedestrians were urinating in their yards or leaving bottles full of urine alongside the roadway. One call at 12:39 am was made to the Sheriff Dept reporting a trespasser on Poker Flat Rd had assaulted the resident and a bottle was thrown at him.
The event that began at noon had warranted no less than 6 medical calls by 10:00 pm. Sheriff logs report 13 contacts resulting in six arrests.