I need to pump water from a hand dug well into a pond during the dry season ( Jun, Jul, Aug, Sep ).
Well is 20 ft deep, 5 ft in diameter, water level 12 ft
The discharge head will be about 12 ft (much less if slow drawdown), with a run of 100 ft.
Preliminary testing indicates a well recharge rate of 400+ GPH (need more testing).
The flow requirement for the pond will be 7000 gallons per day ( 300 GPH, 5 GPM ) due to evaporation.
I have no grid power nearby, but it's the highest sun during those months and the location gets 6-8 hours of unobstructed sun.
I think my best bet will be 24/7 pumping with batteries, charged by PV at the lowest rate of 5 GPM.
Any ideas on which pump would work? DC? AC?
I'm concerned about 24/7 pumping for 4 months killing pumps.
Plus, I obviously want to right size the pump to the task and use the least PV panels and batteries.