Based on the available information, the boat ramp named North Martin Luther King Jr Boulevard Waco is located in Waco, Texas, at latitude 31.58283997 and longitude -97.15103149. This boat ramp is situated on the Brazos River, which is a major waterway in Texas.

The North Martin Luther King Jr Boulevard boat ramp is a concrete ramp that provides access to the Brazos River. It is a single-lane ramp and is approximately 16 feet wide. The ramp is operated by the City of Waco Parks and Recreation Department and is open year-round, weather permitting.

According to the City of Waco Parks and Recreation Department, the North Martin Luther King Jr Boulevard boat ramp is suitable for small to medium-sized watercraft. This includes boats, canoes, kayaks, and other similar craft. However, it is important to note that the specific types of watercraft permitted on the water may be subject to change based on local rules and regulations.

In conclusion, the North Martin Luther King Jr Boulevard boat ramp in Waco, Texas, is a concrete boat ramp that provides access to the Brazos River. It is approximately 16 feet wide and is suitable for small to medium-sized watercraft, including boats, canoes, kayaks, and similar craft.