Groundwater Availability in the Lower Arkansas River Basin
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Water quality
Groundwater quality data in the four counties were pulled from USGS NWISWeb through 1999. About 3600 records were found. The summary statistics of major ions are listed as follows.
| Constituent | USGS code | Number of records | Average | Minimum | 10th percentile | 25th percentile | Median | 75th percentile | 90th percentile | Maximum |
| Chloride | 00940 | 3413 | 642.59 | 1.10 | 17 | 32 | 66.80 | 166.2 | 470 | 160000 |
| Sulfate | 00945 | 2900 | 160.60 | 0.40 | 20 | 41 | 74.00 | 140.00 | 292.10 | 7800 |
| Sodium | 00930 | 1711 | 161.69 | 2.00 | 25 | 41.78 | 67.00 | 130.00 | 270.00 | 58000 |
| Calcium | 00915 | 2428 | 12.28 | 2.50 | 48 | 70.59 | 90.50 | 122.50 | 200.00 | 4800 |
| Magnesium | 00925 | 2413 | 32.22 | 0.20 | 10 | 13.78 | 21.00 | 37.00 | 65.00 | 570 |
Maps for these ions are created to show the spatial distribution. The chloride map is shown below.
Map of Chloride Distribution
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URL: http://ks.water.usgs.gov/lowerark/qw.html
Last modified: 11:46:26 Mon 03 Dec 2001