I visited a wonderful homestead and potential microhydro/solar site in the Oregon coast range. Several interesting questions and design challenges arose: First, the possibility of plumbing together the flow from springs from several nearby draws? Second, estimating the flow from the co-joined stream supply? Third, the economics and power budget of a battery backup system if grid power is available at the existing structures? My
experience is there is a lot of talk and little action when grid power is available. However, this place is "proof in the pudding" with a portable sawmill, solar well, solar irrigation, timber frame construction, reforestry, deforestry, community, grass fed bovines, etc....... !!!
My impression was as the occupants have no intention of moving then an off grid energy system might pay off fiscally. I suggested nickel iron batteries for semi permanent use. The extra effort of joining the streams together might very well be worth the effort and expense.
One thing I learned is always take a 5 gallon
bucket to measure stream flow and start getting numbers for stream flow immediately. Minimize the guessing.