SUMMARY OF COMPOUND DETECTIONS AND CONCENTRATIONS
The following tables summarize data collected for NAWQA studies from 1992-95 by showing results for the Red River Basin Study Unit compared to the NAWQA national range for each compound detected. The data were collected at a wide variety of places and times. In order to represent the wide concentration ranges observed among Study Units, logarithmic scales are used to emphasize the general magnitude of concentrations (such as 10, 100, or 1000), rather than the precise number. The complete dataset used to construct these tables is available upon request. The statistics for detection rates reported in Table 6 can differ from those reported in Figure 7 because of differing definitions of detection limits.
Table 6. Concentrations of herbicides,
insecticides, volatile organic compounds, nutrients, and radon detected in
surface or ground water of the Red River of the North Basin Study Unit (as PDF document)
Table 7. Herbicides, insecticides, volatile
organic compounds, and nutrients not detected in surface or ground water of
the Red River of the North Basin Study Unit (as
PDF document
Table 8. Concentrations of semivolatile organic
compounds, organochlorine compounds, and trace elements detected in fish
tissue or bed sediment of the Red River of the North Basin Study Unit (as PDF document)
Table 9. Semivolatile organic compounds,
organochlorine compounds, and trace elements not detected in fish tissue or
bed sediment of the Red River of the North Basin Study Unit (as PDF document
