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It depends on the location. The National Weather Service (NOAA Technical Report NWS 33) has data from all over the U.S. on pan evaporation and free water surface evaporation. The Western Regional Climate Center has data on the Western states. Take the evaporation number for your area in feet and mulltiply by the surface area in square feet to get a volume in cubic feet. Multiplying this number by 7.48 to get the approximate evaporation in gallons. This volume is based on the time period of the data retrieved from the aforementioned sources. Evaporation is dependent on wheter your pond is surrounded by trees, shaded part of the day, operating temperatire, etc. If you are providing make-up water, a conservative worst case scenario should be used to effectively keep the pond, pool, or lake full.
What else can I help you with?
How much water evaporates when boiling?
When boiling water, it evaporates and turns into steam. The amount of water that evaporates depends on factors like temperature and time, but generally, about 10 of the water evaporates when boiling.
How much money does it cost to build water fountain?
It depends on the fountain!
How much of the water that evaporates from a salty ocean is fresh water?
Only about 10 of the water that evaporates from a salty ocean is fresh water.
How much water evaporates from the seas?
28%
How much water evaporates from a cup of water in a day?
1 ounce
How much water evaporates from the pool?
This depends on many factors.
How much water evaporates from the Amazon?
about 20,840 gallons a day
Why can we separate salt from water?
Water evaporates at a MUCH lower temperature than salt.
How much space is needed to create a water fountain wall?
It depends on the size of the fountain. You have to calculate the height, depth, and width to figure out how much space is needed.
How much heat does water release the when it evaporates?
The water heat of vaporization is 40,65 kJ/mol.
How much water evaporates from a pool in winter?
nearly none but most of the water might freeze.
How much of the water that evaporates from a salty ocean is freshwater?
Vapors are contain practically pure water.
