Buried Pipe

[Poconos]

One way or another you will probably have to drain them for the winter. No reason to bury them deep, maybe 6" or so should be fine. If there is any slope then make it so you can break the connection at that end and snake a small hose hooked to a shop vac to suck it dry. Recently did that for someone with a solar heater and the runs were probably 25 feet.
Al

[BigDave]

Thanks, makes sense. I plan to blow the lines out with the shop vac and cap them in the winter.