How to gathering data for Solar water Pumping

To choose the right pump, we need to know:
- Daily quantity of water required (m3/day)
- Is there a minimum requirement for water flow (m3/h)?
- Vertical lift of water: depth of water in the well + elevation of the tank
- Depth of the well
- Is the water available all the time?
- Volume of the tank (m3)
- Distance Well to tank
- Diameter of the well
All the pumps can work with solar or batteries. It just doesn't make sense to use batteries if you have a tank. It is better to oversize the solar installation to make sure that the customer has water everytime in the year.