The San Marcos river is a spring fed river that starts in downtown San Marcos. The water is cold and clear. A Texas experience is to get an inner tube and float down the river for a mile. At that point, there was an old dam on the river that the city turned into three spillways and created a water park adjacent to the Rio Vista city park. It is perfect for a company outing. We planned ahead, and some of us arrived early to reserve park space, and erect our tent. The tent came in handy, because it rained for an hour right after we set it up. Leaving behind a cook, the rest of us went to the drop-off point, rented tubes, and floated down the river. The rain had stopped, so it was quite nice on the river. The rain had also kept others away, so the river was not crowded. When we reached the water park, we caught a shuttle back upstream and did it again. Spending two hours floating down a river while stuck in an inner tube is actually tiring. Planning ahead, we had set up a lunch with hamburgers, hot dogs, fries, macaroni and cheese, chips, dips, and brownies. With a menu like that, there was no problem in getting everyone off the river and over to the tent. We ate until no one could walk. Or swim. Then we folded the tent, and called it a day. We did not get any river pictures, but we did get one of lunch.