According to the latest information available, Elk Lake Campground 99 boat ramp is located in Deschutes County, Oregon. It is a concrete boat ramp that is 12 feet wide, and it services Elk Lake. The ramp is suitable for small to mid-sized boats and can accommodate trailers up to 25 feet long. The lake is known for its crystal-clear waters, making it a popular destination for kayaking, canoeing, and stand-up paddleboarding. Motorized boats are also allowed on the lake but are limited to 10 mph. It is important to note that some regulations may change seasonally, so it is always advisable to check with local authorities for the latest information.