Home About Services Programs FAQ Education Projects Codes and Regulations Learn more about the Edwards Aquifer and Austin’s groundwater. Aquifer Brochure Youth Education Groundwater Curriculum Karst Lesson High - video Hydrology Lesson - video Salamander Lesson - video Salamander Images Excel Student Data Sheet Scattergram Instructions Aquifer Threats Lesson - video Hydrofiles Groundwater to the Gulf Teacher Training Virtual Reality Tour of Wildflower and Millennium Caves Take a Hike (or a canoe!) to some of Austin's Springs Salamanders Barton Springs Audio Tour Map Audio (download MP3 as zipped file) Audio (Stream file)