1. Water Level Maps In The Edwards (BFZ) Aquifer
Jun Xia
Environment and Water Resource Engineering
Department of Civil Engineering
University of Texas, Austin

2. Edwards (Balcones Fault Zone)

3. Edwards (Balcones Fault Zone)
The Edwards aquifer covers approximately 4,350 square miles.
It contains 11 counties.
Water from the aquifer is primarily used for municipal, irrigation, and recreational purposes.
San Antonio obtains its entire municipal water supply from the Edwards aquifer.

4. Data Collection
well sites
water-surface
elevation in wells

5. Data Collection Problems: • characters every a few lines in the table
which shows well sites
• water-surface
elevation in wells is
not altitude from sea

6. Solving Problem 1

7. Well Sites in Texas totally 7098 wells in the state.
two important areas

8. Well Sites in Edwards Aquifer

9. Solving Problem 2 get DEMs of the aquifer
get elevation of each well site
water elevation =
well elevation
- water surface elevation

10. Applications of The Map
change of water level with time
relationship between water level and precipitation
use of groundwater resource

11. QUESTIONS