I was injured while riding water slide ride. One of the lifeguards was standing in the middle of the slide with his back toward the top of the slide. He had been pushing other riders on down the slide in a congested area. The "jam" had cleared & he was looking downstream when my intertube proceeded toward him. My intertube hit his legs knocking them out from under him & he fell onto my neck & back. I was lying on my back on the intertube when the accident occured. There was a loud crack from my neck as he rolled over me, my neck was pushed to my chest and my back forced forward. Several lifeguards responded by stopping the ride & an on staff EMT evaluated me. I was sent to a local clinic for x-rays. When I got there, I was told that they could not perform x-rays on that day, but that I could drive 20 more minutes to another facility & pay to have them done & then try to get reimbursement from the waterpark as they called the park business office & the office mgr told them she knew nothing about it. I retuned to the park & notified the EMT of this & she stated she had notified the office mgr herself. I elected to wait until I returned from my vacation to see my own doctor. I'm currently receiving care from a MD & chiropractor for a severe neck & upper back strain & sprain. What if any responsibility does the waterpark have?