The National Park Service has multiple slips in Silver Lake Harbor that can accommodate boats of up to 80 feet. These are very simple boat accommodations. They do not sell gas or diesel fuel. Power is available, but water, cable, WiFi and pumpout are not. Restrooms are available, but there are no showers or laundry facilities. Repairs are not allowed on-site. Groceries, accommodations and restaurants are very close by.