Castle Lake Trail #4W02 boat ramp is located in Siskiyou County, California at a latitude of 41.23049164 and longitude -122.38158417. It is a concrete boat ramp that is suitable for small watercraft like canoes, kayaks, and small fishing boats. The boat ramp is approximately 10 feet wide, making it easy to launch a boat.

The boat ramp services Castle Lake, which is a glacial lake located in the Trinity Mountains. The lake is about 47 acres in size, and its elevation is approximately 5,450 feet above sea level. Castle Lake is popular for fishing, swimming, and boating.

According to the National Forest Service, Castle Lake Trail #4W02 boat ramp is open seasonally, typically from late spring to early fall. However, it is important to note that the availability of the boat ramp may vary based on current weather conditions, maintenance, and other factors. Additionally, motorized boats are not allowed on Castle Lake, and only non-motorized boats are permitted on the lake.

In conclusion, Castle Lake Trail #4W02 boat ramp is a concrete ramp suitable for small non-motorized watercraft like canoes, kayaks, and small fishing boats. The boat ramp services Castle Lake, a glacial lake in the Trinity Mountains, and is approximately 10 feet wide. Only non-motorized watercraft are permitted on the lake.