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Texas Water Science Center

Estimated Rate of Recharge in Outcrops of the Chicot and Evangeline Aquifers near Houston, Texas

By John E. Noble

U.S.Geological Survey
Fact Sheet 179–97

In cooperation with the Harris-Galveston Coastal Subsidence District


Table of Contents

(Introduction)

Method of Estimating Recharge Rate Using Environmental Tritium

Field Application of the Method and Estimation of Recharge Rate

References Cited

Figures

1.   Map showing location of the study area and outcrops of the Chicot and Evangeline aquifers near Houston, Texas
2.   Map showing locations of tritium sampling sites, 1989–90 and 1996 studies, Chicot and Evangeline aquifers near Houston, Texas
3.   Graph showing depth below water table of environmental tritium concentrations in samples from selected wells, 1989–90 and 1996 studies, Chicot and Evangeline aquifers near Houston, Texas

Table

1.   Environmental tritium concentrations in samples from selected wells, 1989–90 and 1996 studies, Chicot and Evangeline aquifers near Houston, Texas

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