Based on the available information, the Nehalem Fish Hatchery boat ramp is located in Oregon and has a latitude of 45.8133316 and longitude of -123.77555847. This boat ramp appears to be a public boat ramp that provides access to the Nehalem River.

While there is no specific information available on the width of the ramp, it is likely that it is wide enough to accommodate a variety of watercraft. According to the Oregon Department of Fish and Wildlife, the Nehalem River is suitable for fishing, boating, and other recreational activities.

The types of watercraft permitted on the Nehalem River may vary by season and local regulations. Generally, small motorized boats, canoes, kayaks, and other non-motorized vessels are allowed on the river. It is always recommended to check with local authorities or review posted signage to ensure that you are complying with all rules and regulations regarding boating and watercraft use.

It is important to note that the information provided is subject to change. It is always recommended to check the latest available information regarding any boat ramp or watercraft access point before planning a trip.