Most large stock water troughs can hold about 100-180 gallons. Some, depending on the brand name and shape of the trough, can hold anywhere from 150-200 gallons.
water has its highest density at 4 degress centigrade (give or take a few hundredths).
so, one gallon of water at that temperature is going to have a greater mass than frozen water, which has a...
It doesn't matter if you are talking about water, oil, or poisonous canola liquid. 1 fluid gallon equals 128 fluid ounces, which means there are 128 ounces of water in a gallon of water.