According to the latest information available on the Missouri Department of Conservation's website, the boat ramp named State Highway 43 McDonald County is a concrete boat ramp that provides access to the Elk River. The ramp is approximately 14 feet wide and is suitable for small to medium-sized boats.

The Elk River is a popular destination for fishing, canoeing, kayaking, and tubing. The Missouri Department of Conservation also notes that motorized boats are permitted on the Elk River, but there are restrictions on the size of the motor and the type of fuel that can be used.

Based on the location coordinates provided, the boat ramp is located near the town of Anderson, Missouri. It is important to note that water levels and conditions can vary depending on weather and other factors, so it is always important to check for any current advisories or restrictions before using the boat ramp.