1. Groundwater Quality of the Houston Area
Brett Buff
May 7, 2009

2. Project Location

3. Volume of Brackish Groundwater in Houston Area
TDS between 1,000 and 10,000 mg/l
85 million acre-feet
Slightly saline -1,000 to 3,000 mg/l
60 million acre-feet
Moderately saline – 3,000 to 10,000 mg/l
25 million acre-feet

4. Background + 7,000 wells analyzed TWDB Database Total Dissolved Solids
Groundwater Elevation
Depth of Groundwater from the Surface
Relationship between Groundwater Quality vs. Depth From Surface and Elevation of Groundwater Table

5. TDS (mg/L) of Wells

6. Depth to Groundwater Trend Analysis

7. Elevation of Groundwater Trend Analysis

8. Depth to Groundwater

9. Elevation of Groundwater

10. Total Dissolved Solids of Groundwater

11. GW Elevation vs. TDS Concentration

12. Depth to GW from Land Surface Elevation vs. TDS Concentration

13. Descriptive Statistics

14. Any Questions ???