I guess it would depend on what happens to the "too much water", which may vary by location. Also it would depend on where the water - seepage or centre pivot - came from in the first place. If it's still groundwater, then withdrawing less to begin with probably has a better outcome for aquifer longevity than withdrawing more and allowing some to eventually seep back to the (shallow) aquifer.
Published by Nuraini Mohamed Arsad, Scientist - Soil & Groundwater at Shell Global Solutions
I guess it would depend on what happens to the "too much water", which may vary by location. Also it would depend on where the water - seepage or centre pivot - came from in the first place. If it's still groundwater, then withdrawing less to begin with probably has a better outcome for aquifer longevity than withdrawing more and allowing some to eventually seep back to the (shallow) aquifer.