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In cooperation with the Texas Agricultural Experiment Station, Corpus Christi, Texas

Nitrogen Concentrations and Deposition in Rainfall at Two Sites in the Coastal Bend Area, South Texas, 1996–98

By D.J. Ockerman1 and C.W. Livingston2

U.S. Geological Survey
Fact Sheet 146–99

1 U.S. Geological Survey.
2 Texas Agricultural Experiment Station.


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pdf (728 KB)


Contents

Rainfall Data and Analysis

Concentrations

Deposition

References

Figures

1.  Map showing location of selected data-collection sites and National Weather Service rain gages, Coastal Bend area, south Texas
2.  Graph showing event-mean concentrations of nitrate and ammonia nitrogen, Coastal Bend area, south Texas, 1996–98
3.  Graph showing comparison of computed and estimated (from regression) total nitrogen deposition for selected rainfall events, Coastal Bend area, south Texas, 1996–98

Tables

1.  Mean monthly and annual rainfall for three National Weather Service rain gages, Coastal Bend area, south Texas, 1967–96
2.  Rainfall, pH, alkalinity, and event-mean concentrations of several forms of nitrogen from sites 1 and 2, Coastal Bend area, south Texas, 1996–98
3.  Summary statistics of event-mean concentrations of nitrogen from rainfall, Coastal Bend area, south Texas, 1996–98
4.  Regression equations for estimating nitrogen deposition from rainfall, Coastal Bend area, south Texas, 1996–98
5.  Monthly and annual total nitrogen deposition at sites 1 and 2, Coastal Bend area, south Texas, 1996–98

 



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