I'm vaguely thinking of writing a program to do the calculations on
your U-tube thingy, taking the vapour pressure of the water into
account. I may have time over the weekend to do it.

But which way should it work? Do you want to calculate the water level
if you already know the temperature, or do you want to measure the
level and calculate the temperature? The latter seems more likely, but
for some reason we've been thinking about it the other way round.

dow

David Williams wrote:

The temperature may be the more workable starting point. At present, my
measuring capability is fairly restricted - but I do have an IR
thermometer available.

I could really use a large-capacity solar pump right now. I went to dig
through my rental storage unit (where everything I own except shop tools
and clothing is stored) for a toy Stirling engine. The Des Moines River
was within 4" of covering the floor. - the problem is that, even if I
had the pump, where would I point the discharge?

The river is expected to crest by midday tomorrow. Perhaps we'll have a
tornado to slurp it all up... :-(

Morris Dovey wrote:

Jeff wrote:

Yep - it's been fairly humid. The scary part is that this whole mess has
to pass through St Louis and New Orleans before we're rid of it.

Be careful what you wish for. If all this mess were dumped into the
Chattahoochee, you'd be able to backstroke from Marietta to Decatur -
and it's not nice clean water.

Thanks.