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Water Quality Conditions in the Paria Basin

Wells, springs and mine sites with parameter concentrations that have equaled or exceeded drinking water standard(s), including location and parameter(s) are shown in Table 6.4-5A.  Impaired lakes and streams with site type, name, length of impaired reach, area of impaired lake, designated use standard and parameter(s) exceeded is shown in Table  6.4-5B.  Figure 6.4-9 shows the location of water quality occurrences keyed to Table 6.4-5.  Not all parameters were measured at all sites; selective sampling for particular constituents is common.  A description of water quality data sources and methods is found in Volume 1, Appendix A. 

Well, Mine or Spring sites that have equaled or exceeded drinking water standards (DWS)

  • Refer to Table 6.4-5A.
  • Seven wells have parameter concentrations that have equaled or exceeded the drinking water standard for arsenic.

Lakes and Streams with Impaired Waters

  • Refer to Table 6.4-5B.
  • The water quality standard for suspended sediment concentration was exceeded in one 29-mile stream reach, the Paria River from the Utah border to the Colorado River.  A portion of this impaired reach is located in the Kanab Plateau Basin.
  • This reach is not part of the ADEQ water quality improvement effort called the Total Maximum Daily Load (TMDL) Program at this time. 



Click to view Table 6.4-5

Click for Table 6.4-5 Water Quality Exceedences

in the Paria Basin

Click to view Figure 6.4-9

Click for Figure 6.4-9 Paria Basin Water Quality Conditions



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