#### dannyboy

##### From the promised LAND

I do know there are formulas out there on the rate of water evaporation that is not in motion, but in my case there are several wild cards to add to the mix.

Case in point.

Pond has aprox 560 SF of surface area. It has a depth of 6 feet. There is a major water fall that is 6 feet wide, three feet long, with 22,000 gallons of water flowing over it per hour. That water flows into the upper pond, then into the lower pond via two more falls, aprox 3 feet wide and two feet long each.

Then there is a skimmer return that roils the water surface of just the lower pond and keeps it in a circular motion, the flow of which is 3800 gallons per hour.

I am aware of many of the situations that affect evaporation rates, temp, wind etc. Could there be a formula developed that I could use that would give me at least a rough idea of what to expect?

While not uneducated, I am somewhat math challenged (wish like heck I had paid more attention in high school and college!)

Thank you in advance!

d