These maps are presented on United States Geological Survey 7.5 Minute Quadrangles and reflect recharge and contributing zone areas regulated by Edwards Aquifer Authority Rules, ch. 713, (Water Quality), subchs. E (Spill Reporting), F (Regulated Materials Registration, Storage, and Planning), G (Aboveground and Underground Storage Tanks), and H (Prohibited Activities, §713.703). In addition to the … Continue reading Regulatory Zone Maps