av8er23
Contributor
teknitroxdiver:Yeah, I've had that happen twice. Once, I attempted to go diving in a flooded rock quarry. Vis was about 8' at the surface. However after getting down to about 12', there was a thermocline and a drop in vis down to about 2'....we aborted shortly after I descended directly into a nice rock projection, which I couldn't see until impact.
Case 2. There's a popular creek close to my house which people go to all the time and swim, and get drunk, and other things. Which means they lose a lot of stuff in the water, such as necklaces and rings and such. Since I had just tested my new bp/w in the pool, I had an AL80 waiting with 2500 psi still in it, so I decided to go use that air. Water was warm, and it was a pretty nice place, other than methane bubbling up through the bottom, and a bottom that was so soft near shore that you had to pretty much jump in on your back so you started floating instead of walking. Anyway...viz was 10' on the surface dropping to less than 1' on the bottom.
I note that your profile says you're experience is 'rookie'. Don't do it. Tell them you aren't doing it, and don't do it. Slogging around in the murk with trees and jeeps along with a steel cable is not a good place to be.
If you're thinking about doing this, send GaryD a PM. He knows about that kind of stuff, and will tell you what you need to know. (Note: that doesn't mean he'll tell you how to do it)
Did you find any valuables?