Calculating size of water tanks needed for livestock and barn
We are trying to calculate the size of water tanks we will need for supplying a barn and watering for a horse, I CAL, a couple of sheep, a few goats, and a couple of pigs. The barn amenities would include a horse wash that would be used infrequently, and personal use such as washing hands and using a toilet. Is there a way to calculate how much water storage we should use? We will be supplying this with a 16 gallon a minute well that has a large reserve.
I don't know that there's a tool to easily calculate the volume of water storage needed for your barn. You might have to do some calculating of your own or enlist the help of a plumber. Here are two resources on daily water requirements for different classes of livestock: http://www.ucanr.edu/sites/placernevadasmallfarms/files/90846.pdf and http://drought.unl.edu/ranchplan/DuringDrought/WaterHeatStress.aspx. You could add up what you think peak hourly demand might be (livestock + bathroom + horse wash) and compare that to the flow rate from the well. Storage may be more important if the livestock water is provided on demand rather than stored in a large trough, where the trough could serve as a reservoir and reduce demand on the well.
Good luck and happy calculating.