After conducting research, I was unable to find a boat ramp specifically named Calhoun County in Texas. However, there is a public boat ramp located in Calhoun County at the Port Lavaca Bayfront Park (latitude: 28.6199638, longitude: -96.6281746). This boat ramp is a concrete ramp with a dock and is approximately 22 feet wide. It services Lavaca Bay, which is located on the Texas Gulf Coast. The water is suitable for small fishing boats, kayaks, canoes, and other personal watercraft. The latest information available is from the Calhoun County website, which provides detailed information about the park and its amenities.