If you strafe jump down into it and out.. just using one hop in the water as you go thru it down the tunnel you make no water sound.Was good for rails-only if you spawned by water.I might as well post a demo.Has variations on yours in there too. (Admittedly by accident It is a bit random)
cut from daelmun's q2dm1-jumps water sidedunno where is demo back from 98 with waterout tricks
lol, I never new if you fall into that water on q2dm1 you won't loose any health due to just falling