The ram pump is useful if you need to a little water to a higher level by using a lot of water flowing down to a lower level than the source. There's no point in ram-pumping water up to a higher level to then run a turbine - just put the turbine where the ram would have been, lower than the source.

Martin mentioned in other threads that he has a pond on his property, but I assume it is only fed by rain and there's no spring or stream running into it. I don't know if there's any "downhill" for him to use, either.