USGS Data Series 603  - Discrete and Continuous Water-Quality Data and Hydrologic Parameters from Seven Agricultural Watersheds in the United States, 2002

Table 4. Major ions, field parameters, organic carbon, and physical parameters measured during the U.S. Geological Survey National Water-Quality Assessment Program’s Agricultural Chemicals Team studies. 

[–, information not available; mg/L, milligrams per liter] 

Analyte	Chemical registry No.	Matrix	PCODE	Method reporting limit (mg/L)
Inorganic Parameters
Alkalinity, field	–	water, filtered	00418	–
Alkalinity, laboratory	–	water, filtered	29801	–
Alkalinity, laboratory	–	water, filtered	29802	–
Bromide	24959-67-9	water, filtered	71870	0.016
Calcium	7440-70-2	water, filtered	00915	.01
Chloride	16887-00-6	water, filtered	00940	.2
Dissolved oxygen, field	–	water, whole	00300	–
Fluoride	16984-48-8	water, filtered	00950	.17
Hydrogen sulfide, field	–	water, whole	71875	–
Iron	7439-89-6	water, filtered	01046	.0064
Iron (II), field	–	water, filtered	99114	–
Magnesium	7439-95-4	water, filtered	00925	.008
Manganese	7439-96-5	water, filtered	01056	.0008
pH, field	–	water, whole	00400	–
pH, laboratory	–	water, whole	00403	–
Potassium	2023695	water, filtered	00935	.16
Residue on evaporation, 180°C	–	water, filtered	70300	10
Silica	7631-86-9	water, filtered	00955	.04
Sodium	7440-23-5	water, filtered	00930	.1
Specific conductance, field	–	water, whole	00095	–
Specific conductance, laboratory	–	water, whole	90095	2.6
Sulfate	14808-79-8	water, filtered	00945	.18
Sulfate, field	14808-79-8	water, filtered	99113	–
Sulfide, field	–	water, filtered	99118	–
Organic Parameters
Dissolved organic carbon	–	water, filtered	00681	0.33
Specific UV absorbance (SUVA)	–	water, filtered	63162	–
Total inorganic carbon	–	water, whole	00608	.12
Total inorganic carbon	–	water, whole	00688	.12
Total carbon	–	water, whole	00694	.12
Total organic carbon	–	water, whole	00689	.12
Total particulate nitrogen	17778-88-0	water, whole	49570	.022
Physical Parameters
Suspended sediment	–	water, whole	80154	–
Suspended sediment, % smaller than 0.0625 mm	–	water, whole	70331	–
Temperature, field	–	water, whole	00010	–

Discrete and Continuous Water-Quality Data and Hydrologic Parameters from Seven Agricultural Watersheds in the United States, 2002–09

Discrete and Continuous Water-Quality Data and Hydrologic Parameters from Seven Agricultural Watersheds in the United States, 2002–09 