EXECUTIVE SUMMARY:

Additional data analyses and discussion of results for GAM Run 08-64 are presented in this report. These additional analyses indicate that the greatest change in recharge, which is the largest component of the water budget, coincides with the simulated drought of record. The largest decrease in recharge beneath Comanche County occurs in the Hensell Aquifer where recharge conditions are purposely reduced (approximately 7,503 acre-feet per year, or 36 percent of the recharge for average conditions) in the Hensell Aquifer to simulate conditions from 1954 through 1956. Although a portion of this may be attributable to cells that converted to dry, the majority is due to the simulated drought. This is nearly double the pumpage quantities removed for Comanche County due to the conversion of cells to dry (3,994 acre-feet per year). The largest decrease in recharge beneath Erath County occurs in the Paluxy Aquifer and coincides with the simulated drought of record with a decrease of approximately 18,122 acre-feet per year, or 60 percent of recharge during average conditions. Prior to the simulated drought of record, recharge remains steady in the Paluxy Aquifer, Glen Rose Formation, Hensell Aquifer, and Hosston Aquifer, with no decrease in recharge due to the conversion of cells to dry. REQUESTOR