In these circumstances, a submersible refill system, consisting of a pump and a motor, pulling water from a well is needed to help with lake augmentation. The irrigation system will usually pull water from a lake overnight, then the refill pump system pulls water from a different aquifer to replenish the lake during the day.
Automated Systems
Automatic devices out in the water monitor the water level, either mechanically or electronically, so that when the surface water drops below a certain level it triggers the refill pump and when the lake has filled up sufficiently it turns off.
