3400 gal
A 12-foot wide round pool with 3.3 feet of water contains 2,803.7 gallons of water.
13,594 US gallons of water.
A 4-foot column of water that is 1-foot deep would contain 4 cubic feet of water. To convert this to gallons, you would multiply by 7.48 (since 1 cubic foot is approximately 7.48 gallons). Therefore, a 4-foot column of water 1-foot deep would be approximately 29.92 gallons.
A 100-foot round pool filled with 1.5 feet of water would be holding about 88,500 gallons.
About 18,402 gallons.
About 24 gallons.
Approximately 1,616 US gallons.
15,320.1 US gallons of water.
1 acre = 43560 sq.feet. 1 foot deep water over an acre is 43560 cubic feet, which is 325851.4 gallons in 1 foot deep. If it is 1 inch deep (1/12 foot) then it is 27154.3 gallons in 1 inch deep.
You haven't told us how long the trough is, or how deep the water is in it. If it's full to the rim ... 2-ft deep ... then there's 44.88 gallons for every foot of the trough's length.
This pool holds a maximum of about 10,360 gallons of water.
367.2 (rounded)