Water-Quality Assessment of the Sacramento River
Basin, California: Water-Quality, Sediment and Tissue
Chemistry, and Biological Data, 1995-1998
(Open-File Report 2000-391)

Quality Control
Replicate Data: Surface Water

Major Inorganic Constituents in filtered water (0.45 micromter glass fiber filter)

Number of significant figures do not reflect analytical method
reporting levels.

[mg/L - milligrams per liter, µS/cm - microsiemens per centimeter, µg/L - micrograms per liter, < - less than]

Site Identification	Date	Time	Type of Sample	Specific Conductance (µS/cm)	Calcium (mg/L)	Magnesium (mg/L)	Sodium (mg/L)	Potassium (mg/L)	Alkalinity by gran titration (mg/L as CaCO₃)	Sulfate (mg/L)	Chloride (mg/L)	Fluoride (mg/L)	Silica as SiO2 (mg/L)	Total Dissolved Solids (mg/L)	Iron (µg/L)
Sacramento Slough near Knights Landing, CA	8/26/96	1100	Environmental	311	24	17	16	1.6	140	6.3	6.1	0.1	26	193	41
Sacramento Slough near Knights Landing, CA	8/26/96	1101	Replicate	314	24	17	17	1.6		6.5	6.1	0.1	27	270	15
Cache Creek at Rumsey, CA	12/13/96	1240	Environmental	436	21	25	35	2	110	25	40	0.1	16	234	8
Cache Creek at Rumsey, CA	12/13/96	1241	Replicate	436	21	25	35	2	110	25	40	0.11	16	247	20
Arcade Creek near Del Paso Heights, CA	1/13/97	1100	Environmental	186	18	4.6	11	2.5	50	13	12	<.10	13	125	61
Arcade Creek near Del Paso Heights, CA	1/13/97	1101	Replicate	193	18	4.6	11	2.6	50	13	12	<.10	13	128	81
American River at Sacramento, CA	3/24/97	1100	Environmental	55	5.2	1.8	2	0.74	19	2.1	1.3	<.10	9.9	41	8.8
American River at Sacramento, CA	3/24/97	1101	Replicate	55	5.3	1.8	2	0.8		2.2	1.4	<.10	10	42	14
Yuba River at Marysville, CA	11/17/97	1400	Environmental	90	9.5	3.1	2.4	0.56	30	4	1.6	<.10	12	65	13
Yuba River at Marysville, CA	11/17/97	1401	Replicate	90	9.5	3.1	2.4	0.54	30	3.9	1.6	<.10	12	65	11
Colusa Basin Drain at Road 99E near Knights Landing, CA	2/26/98	1100	Environmental	244	17	9.1	18	2.1	91	19	6.5	0.17	10	140	11
Colusa Basin Drain at Road 99E near Knights Landing, CA	2/26/98	1101	Replicate	243	17	9.2	17	2.1	91	19	6.6	0.18	10	145	14