During a particular 30-day period, the streamflow flowing into a reservoir averaged 5.0 m3/s. Water supply withdrawals from the reservoir averaged 136 mgd. The only other outflow from the reservoir was 9.4 cm of evaporation from the water surface. The average surface area of the reservoir during the 30 day period was 3.75 km2. The reservoir had 12,560 ac-ft of water in storage at the beginning of the 30 day period. Determine the storage content at the end of 30 days alternatively in m3 and ac-ft.