Based on the latest information available, the Big Lake Campground boat ramp in Oregon is a concrete boat ramp. It is approximately 20 feet wide, which is wide enough to accommodate most watercraft, including larger boats. The boat ramp services Big Lake, which is a popular destination for fishing, boating, and other water activities.

According to the official website of the Deschutes National Forest, which manages the Big Lake Campground, the following watercraft are permitted on the lake:

- Motorboats with a maximum horsepower of 10
- Sailboats
- Canoes
- Kayaks
- Stand-up paddleboards
- Rowboats
- Rafts

It is important to note that all watercraft must be properly registered and comply with state and federal regulations. Additionally, all boaters are required to wear a life jacket at all times while on the water.

Overall, the Big Lake Campground boat ramp is a well-maintained facility that provides easy access to Big Lake for a variety of watercraft. Its location in the Deschutes National Forest makes it a popular destination for outdoor enthusiasts in the area.