Cave Depths

[wingman]

As a part of a nss/cds project we are looking at adding nitrate sensors to ysi multiprobes for some water chemistry monitoring. The only problem is that the sensors have a depth limit of 50 feet. So i am trying to figure out what systems i can deploy the sondes in and stay above 50 feet. Peacock works but how about Cow, Cathedral, and Waynes World...which are cds systems that i would like to get some baseline data for? Does anyone know how far in those three systems you can go and not get deeper than 50 feet?? Thanks. Bill

[Kelly Jessop]

Bill,you will have to get some depth at Cathedral to get an upstream/downstream junction so it isn't tainted by surface water,if you can get permission,upstream Falmouth would be ideal. Incidentally,I had a signigicant amount of sampling tubing that was given to me to donate to the CDS,and it was supposed to be placed from the surface to upstream for sampling purposes.

[Squirrel Girl]

http://www.satlantic.com/suna/

[wingman]

http://www.satlantic.com/suna/

Do you have a price for one?

[CaveMD]

You can get pretty far into the two down stream passages of cow. I think I hit 50' in one of them but I haven't been too far past some of the smaller sidemount restrictions.

Edit: checked my logbook,

Pushing the restriction at the end of the gold line downstream never got past ~40' before I turned.
The white line downstream does get deeper than 50' but just barely. I haven't been to eol of the white line though.
Sent from my HTC PH39100 using Tapatalk 2

[wingman]

Bill,you will have to get some depth at Cathedral to get an upstream/downstream junction so it isn't tainted by surface water,if you can get permission,upstream Falmouth would be ideal. Incidentally,I had a signigicant amount of sampling tubing that was given to me to donate to the CDS,and it was supposed to be placed from the surface to upstream for sampling purposes.

Thanks Kelly maybe we can do a dive there and put the tubing in place...will see about a permit for Falmouth.

[wingman]

You can get pretty far into the two down stream passages of cow. I think I hit 50' in one of them but I haven't been too far past some of the smaller sidemount restrictions.

Edit: checked my logbook,

Pushing the restriction at the end of the gold line downstream never got past ~40' before I turned.
The white line downstream does get deeper than 50' but just barely. I haven't been to eol of the white line though.
Sent from my HTC PH39100 using Tapatalk 2

Thanks...looks like cow is a go.

[Squirrel Girl]

Do you have a price for one?

No, I just googled.

[wingman]

No, I just googled.

While i have not asked for a quote, i have been told by the vendor i use for ysi nitrate probes that the SUNA UV probe is $22k, which is a little out of range for a pilot project but not for the development of an agency funding proposal.

[wingman]

http://www.satlantic.com/suna/

Just got a quote for that data logger, $19,000 (i get an academic discount) plus must purchase a battery pack and data logger if i don't want it tethered to the surface. The nitrate probes for the ysi are about $450 (of course the unit itself is over $10k), only last for a year and can't go below 50 feet. Water sampling is expensive.