The San Marcos River is a popular waterway located in central Texas. It flows through the city of San Marcos and is known for its clear, spring-fed waters. The river is approximately 75 miles long and is a vital resource for recreation, providing opportunities for activities such as tubing, kayaking, and fishing. The river is also home to diverse wildlife and several endangered species, including the Texas blind salamander. The surrounding area features parks and natural habitats, making it a popular destination for both locals and tourists who enjoy outdoor activities and nature exploration.