Based on the available information, the Olive Lake boat ramp is located in the state of Oregon, with a latitude of 44.78373337 and a longitude of -118.59916687. The ramp provides access to Olive Lake, which is a popular destination for boating, fishing, and other recreational activities.

The exact width of the boat ramp is not specified in the available information. However, it can be assumed that the ramp is wide enough to accommodate a range of different watercraft, from small boats and canoes to larger vessels.

As for the types of boats permitted on Olive Lake, this information is also not explicitly stated. However, it is likely that the lake allows a variety of different watercraft, including motorized boats, sailboats, kayaks, and canoes. Any specific restrictions or regulations regarding boat types and sizes would need to be verified through the appropriate local authorities or governing bodies.

Overall, the Olive Lake boat ramp appears to be a popular and well-used facility for accessing the lake and enjoying a variety of water-based activities. As with any recreational area, it is important for visitors to follow all relevant rules and regulations to ensure the safety of themselves and others, as well as to protect the natural environment of the lake and surrounding area.