Groundwater Quality of the Houston Area
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Groundwater Quality of the Houston AreaBrett BuffMay 7, 2009
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Project Location
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Volume of Brackish Groundwater in Houston AreaTDS between 1,000 and 10,000
mg/l85 million acre-feetSlightly saline -1,000 to 3,000
mg/l60 million acre-feetModerately saline – 3,000 to
10,000 mg/l25 million acre-feet
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Background+ 7,000 wells analyzedTWDB DatabaseTotal Dissolved SolidsGroundwater ElevationDepth of Groundwater from the
SurfaceRelationship between
Groundwater Quality vs. Depth From Surface and Elevation of Groundwater Table
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TDS (mg/L) of Wells
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Depth to Groundwater Trend Analysis
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Elevation of Groundwater Trend Analysis
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Depth to Groundwater
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Elevation of Groundwater
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Total Dissolved Solids of Groundwater
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GW Elevation vs. TDS Concentration
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
-800
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0
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f(x) = 0.0360464588817408 x − 95.0363143134789R² = 0.0135518517430399
TDS (mg/L)
Ele
va
tio
n (
fee
t)
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Depth to GW from Land Surface Elevation vs. TDS Concentration
0 500 1000 1500 2000 2500 3000 3500 4000 4500 50000
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f(x) = − 0.0855478981073329 x + 193.688564479267R² = 0.0892906836622555
TDS (mg/L)
De
pth
fro
m L
SE (
fee
t)
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Descriptive Statistics
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Any Questions ???