This is the RIO Group site. Effective January 1, 2014, a $125.00 security deposit will be required upon check-in to the group camp site (personal check only made payable to California State Parks). A pre and post walk through will be required as well. 100 people maximum. Fires in provided fire ring ONLY-no other open fires allowed. May be reserved by campers with horses. If camping with horses there are 12 corrals and a maximum of 24 horses allowed. Horse manure must be removed from the campsite. A $25.00 cleaning deposit is required at check-in. There is an additional fee of $1.00 per horse. Boat trailers must be parked in your campsite overnight. Boat trailer lot must be empty by 9 PM summers and 7 PM in the winter. All Boats must be off the lake by sunset. If you are bringing boats on trailers a boat use reservation is recommended. Check in, registration, is at the entrance station. **At Silverwood SP (Boat Use) you are reserving boat trailer space in their day use parking lot. All boats must be off the water (trailed boats parked at the campsite overnight) and the Day use lot empty at the end of each day. The advantage of a Silverwood Boat Use reservation is that a spot is assured to park the boat trailer for each days boating. All vessels entering Silverwood Lake will be required to pass the Quagga Mussel inspection before launching. ALL VESSELS MUST BE CLEAN, DRAINED, AND DRY. Vessels that fail inspection will be quarantined from launching for seven days.** ** Arrival dates earlier than the online-reservation-window may also be available at the campground.