Currently at my property I have a small brook that has a small waterfall with a pool at the base of the falls. From this pool part of the
water is diverted through a pipe to a dug
pond and then via an outlet pipe its diverted back to the brook a bit farther down so there is constant flow through the
pond. If I wanted to harness the outlet pipe for a small hydro generator, most likely with a pelton wheel, is the head calulated as the distance from the base of the waterfall where the inlet to the pond is or just from the start of the outlet pipe from the pond to where it reenters the brook. The outlet pipe is submerged most of the time so its almost like the pond is one giant bulge in a continuous pipe from the inlet at the waterfall pool to the outlet at the pond.
