William Feathergail Wilson, PG # 21

• Groundwater age dating• Geologic flow concepts• Geochemical analytics • Multiple correlation factors• Vertical & horizontal flow• Local & regional factors• Aquifers & aquitards• Climate past and present• Carbonates and clastics• Structural factors• Diagenesis

Very small recharge

• Surface and groundwater• Both over allocated• Demand exceeds supply• Texas will double its population• IH-35 Corridor

• Growth will cease without water• IH-35 Corridor

• San Antonio• Austin• Belton-Temple• Everything in between

• Edwards Plateau covers ~ 40 counties• Provides ~ 90% of all spring flow for Hill

Country rivers and streams

• Two primary units• Edwards carbonates• Hensell sands

• A thin line• Balcones Fault Zone• Highly permeable• Cavernous• Rapid recharge• Large springs

• Del Rio• Bracketville• San Antonio• New Braunfels• San Marcos

• Major Gulf Coastal Plain aquifer couplet• Major export targets for the IH-35 corridor

• Gonzales County• Bastrop County• Lee County• SE Caldwell County

• $1 million/mile pipelines• Growing political controversies (water wars)• Demand exceeds supply• Alternatives?

• Hosston• Desalination

• Hosston sands and gravels• 500-1,000 mg/liter TDS• Drilling depths 3,200’

• Bell Co. test• Taylor city well

• Test well ~ $400,000• Production well ~ $1.2 million• Compare to $400 million cost

• Pipeline• Drilling• Imports

Population of Texas will double by 2050Texas Hill Country growth-demandIH-35 Corridor – no more local groundwaterPipeline transport demand & issues

$1 million/mileLandowner resistance

Shale gas demand: 3-5 million gallons/well – may drill >30,000 wells in south central Texas

San Antonio to Belton IH-35 corridor water demand exceeds supply

Fastest growing area in TexasAlternative supplies

Desalination▪ Edwards▪ Hosston▪ Sea water

Import water Drill a Hosston test well