Alachua Sink

[Diverlee]

Thanks.


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[Kelly Jessop]

Visibility is currently 1' to the upstream downstream junction and 20-30' upstream.

My contact info is at
http://www.nsscds.org/node/330 and is current.

Bob Schulte

Thanks for the update Bob. For those following this thread,1 foot of viz to the junction is not a fun dive because you are swimming close to 200ft heading to depth before you ever hit the cave since Alachua is an offset sink.

[Draker]

I thought it was a great dive and enjoyed it immensely. When we hit the clear water at 150', I cheered with joy!
Although I will admit that the hour of deco in zero viz was less than desirable, at least the water was 76 degrees.

Thanks Bob!

[floridabob]

I assumed James was the cause of the zero viz...I feel better now.

The dive was actually quite nice for me as I was first. And those huge hills are a hoot on a rebreather!

Our assigned scientific purpose was to count animals dead or alive: over 70 dead crayfish and 14 live and 1 dead perch. Those are close numbers, but the dead animals was a bit sobering.

Thanks Schulte!

[Kelly Jessop]

: over 70 dead crayfish

That is highly significant,and needs inquiry. Dissolved oxygen levels could be low,related to surface run off since Alachua is a swallet,but surface run off from a busy highway commercial district could be a problem. Knowing the difference with documentable evidence could go a long way toward preserving the site from development.

Did you go upstream or downstream?
If both,where did you see the most dead crayfish?
Were there dead crayfish in the offset sink tunnel (if you could see related to reduced viz)

[floridabob]

Bob logged everything that night.

Upstream, no downstream.

Couldn't see any in the offset.

Bob