ABSTRACT
Aquifer storage recovery (ASR) wells have certain unique features in their design that differentiate them from production wells or injection wells. The pumping rate at sometimes may be slightly greater than the design recovery rate for the well, since the pump is usually pumping against a lower head than normal and therefore producing more water. Subsequent wells could be designed with smaller diameter casings to reduce costs. Discussion has occurred regarding whether the screen and gravel pack design for an ASR well in an unconsolidated aquifer should be any different than for a normal production well. The best solution is to design the screen identical to that for a production well so that there is no increased likelihood of gravel pack movement around the screen. Flowmeters utilized on ASR systems should include totalizing measurement in order to monitor cumulative volumes during both recharge and recovery.
