Estimation of Total Dissolved Solids and Sulfate Concentrations for the Arkansas River near Coolidge (near the Colorado-Kansas line)

To obtain the current specific conductance of Arkansas River water near
Coolidge, click on the following line that links to data available from the web
pages of the U.S. Geological Survey (USGS):
http://nrtwq.usgs.gov/explore/plot?site_no=07137500&pcode=00060&period=7d_all&timestep=uv

Read the specific conductance value for the ARKANSAS R NR COOLIDGE, KS and convert to total dissolved solids (TDS) concentration in mg/L (or ppm) by using the equation

TDS = 0.935 x Sp.C. - 368
(multiply the specific conductance by 0.935 then subtract 368),

or convert to sulfate concentration in mg/L (or ppm) by using the equation

Sulfate = 0.593 x Sp.C. - 326
(multiply the specific conductance by 0.593 then subtract 326).

Alternatively, the TDS concentration can be estimated from a graph of TDS versus conductance and the sulfate content can be estimated from a graph of sulfate versus conductance.  See section on Chemical Characteristics of Arkansas River Water in the report Water Quality of the Arkansas River in Southwest Kansas for estimation of the concentrations of other dissolved constituents (calcium, magnesium, sodium, chloride, nitrate and boron) in the river water from the specific conductance.
 

To view a USGS graph of specific conductance for Arkansas River water near
Coolidge during the past week, click on the following line:
http://water.usgs.gov/ks/nwis/uv?dd_cd=06&format=gif&period=7&site_no=07137500

To view a USGS graph of specific conductance for Arkansas River water near
Coolidge during the past month, click on the following line:
http://water.usgs.gov/ks/nwis/uv?dd_cd=06&format=gif&period=30&site_no=07137500

To view USGS graphs of discharge, gage height, temperature, specific
conductance, and precipitation for the Arkansas River near Coolidge during the
past week, click on the following line:
http://water.usgs.gov/ks/nwis/uv?dd_cd=01%2C02%2C04%2C06%2C18&format=gif&period=7&site_no=07137500

To view USGS graphs of discharge, gage height, temperature, specific
conductance, and precipitation for the Arkansas River near Coolidge during the
past month, click on the following line:
http://water.usgs.gov/ks/nwis/uv?dd_cd=01%2C02%2C04%2C06%2C18&format=gif&period=30&site_no=07137500
 

To obtain a map of total precipitation for western Kansas and Colorado (that
includes the entire drainage basin of the upper Arkansas River) during the last
week that was estimated from radar, click on the following web address of
Intellicast:
http://www.intellicast.com/Local/USLocalWide.asp?loc=kden&seg=LocalWeather&prodgrp=HistoricWeather&product=WeeklyPrecipitation&prodnav=none&pid=none
 
 

Funded (in part) by The Kansas Water Plan.