SURFACE WATER QUALITY MONITORING 



Station Location 



Responsible Agency: U.S. Geological Survey 



Station Name 



Poplar River at International Boundary 

 East Poplar River at International Boundary 

 East Poplar River near Scobey 



PARAMETERS 



Parameter 



Analytical Method 



Sampling 

 frequency no. 



90410 Alkalinity - lab 



01106 Aluminum - diss 



00610 Ammonia - tot 



00625 Ammonia +Org N-tot 



01000 Arsenic - diss 



01002 Arsenic - tot 



01010 Beryllium - diss 



01012 Beryllium - tot/rec 



01020 Boron - diss 



01025 Cadmium - diss 



01027 Cadmium - tot/rec 



00915 Calcium 



00680 Carbon - tot Org 



00940 Chloride - diss 



01030 Chromium - diss 



01034 Chromium - tot/rec 



00080 Color 



00095 Conductivity 



01040 Copper - diss 



01042 Copper - tot/rec 



00061 Discharge - inst 



00950 Fluoride 



01046 Iron - diss 



01045 Iron - tot/rec 



01049 Lead - diss 



01051 Lead - tot/rec 



00925 Magnesium - diss 



01056 Manganese - diss 



01055 Manganese - tot/rec 



01065 Nickel - diss 



01067 Nickel - tot/rec 



00615 Nitrite - tot 



00630 Nitrate + Nitrite - tot 



00300 Oxygen-diss 



70507 Phos, Ortho-tot 



00400 pH 



00665 Phosphorous - tot 



00935 Potassium - diss 



00931 SAR 



80154 Sediment - cone. 



80155 Sediment - load 

 01145 Selenium - diss 

 01147 Selenium tot 

 00955 Silica 



00930 Sodium 



00945 Sulfate - diss 



70301 Total Dissolved Solids 



00010 Temp Water 



00020 Temp Air 



00076 Turbidity 



80020 Uranium - diss 



01090 Zinc - diss 



01092 Zinc - tot/rec 



Elect. Titration 



AE, DC Plasma 



Colorimetric 



Colorimetric 



AA, hydride 



AA, hydride 



ICP 



AA - Persulfate 



AE, DC Plasma 



AA, GF 



AA, GF - Persulfate 



ICP 



Wet Oxidation 



Colorimetric 



AE, DC Plasma 



AE, DC Plasma Persulfate 



Electrometric, visual 



Wheatstone Bridge 



AA, GF 



AA, GF - Persulfate 



Direct measur. 



Electrometric 



AE, ICP 



AA-Persulfate 



AA, GF 



AA, GF - Persulfate 



AA 



ICP 



AA-Persulfate 



AA, GF 



AA, GF - Persulfate 



Colorimetric 



Colorimetric 



Winkler/meter 



Colorimetric 



Electrometric 



Colorimetric 



AA 



Calculated 



Filtration-Gravimetric 



Calculated 



AA, hydride 



AA, hydride 



ICP 



ICP 



Turbimetry 



Calculated 



Stem Therm. 



Stem Therm. 



Nephelometric 



Spectrometry 



ICP 



AA-Persulfate 



SA 

 BM 



A 



BM 



SA 

 A 



BM 

 BM 



SA 

 A 



Computer storage and 

 retrieval system — USGS 



C - continuous; D - daily; M - monthly; 

 BM - bimonthly; MC- monthly composite; 

 A - annually at high flow; SA - semi- 

 annually low and high flow; AA - atomic 

 absorption; tot - total; rec - recoverable; 

 diss - dissolved; AE - atomic absorption; 

 DC - direct current; ICP - inductively 

 coupled plasma; GF - graphite furnace 



