Complex sentence: These Two streams of water from hot springs keep Mr. Bubbles Soaking and swimming in Yellowstone hot springs is illegal, however the water from the Ferris Fork river following over the rock makeshift dam into Mr. Bubbles means that technically you are swimming in the river.
Split into simpler sentences: These Two streams of water from hot springs keep Mr. Bubbles Soaking and swimming in Yellowstone hot springs is illegal. However, the water from the Ferris Fork river following over the makeshift rock dam into Mr. Bubbles means that technically you are swimming in the river.