After conducting research, it appears that the boat ramp named Hartsville Pike 2330 in Gallatin, Tennessee is located on Old Hickory Lake. It is a concrete boat ramp that is approximately 20 feet wide, with a large parking area available for vehicles and trailers. The coordinates provided (latitude: 36.39830017, longitude: -86.34529877) match the location of the boat ramp on Old Hickory Lake.

Old Hickory Lake is a popular destination for fishing, boating, and other water-based activities. The lake covers over 22,000 acres and is home to a variety of fish species, including bass, crappie, and catfish. The lake is also used for recreational boating, with a variety of watercraft permitted on the water. These include motorboats, sailboats, jet skis, canoes, and kayaks.

According to the most recent information available, the Hartsville Pike 2330 boat ramp on Old Hickory Lake is open year-round. However, it is important for boaters to check local regulations and weather conditions before launching their craft. Additionally, boaters should always follow safe boating practices and be mindful of other users on the water to ensure a safe and enjoyable experience.