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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)

Feather River near Nicolaus, California

Major Inorganic Constituents in filtered water (0.45 micrometer capsule filter)

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

Method reporting levels of all analytes

[mg/L - milligrams per liter, µg/L - micrograms per liter, < - less than]

Date Time Calcium (mg/L) Magnesium (mg/L) Sodium (mg/L) Potassium (mg/L) Chloride (mg/L) Sulfate (mg/L) Fluoride (mg/L) Silica as SiO2 (mg/L) Iron (µg/L) Total solids (mg/L)
2/23/96 1020 6.9 3.1 2.8 0.9 1.3 1.9 <.10 13 23 52
3/19/96 1330 7.4 3.2 3 0.7 1.7 2.3 <.10 13 84 57
4/4/96 1520 7.7 3 3 0.8 1.6 2.7 <.10 12 25 50
5/14/96 0940 8.5 3.4 3.3 0.6 2.3 3.4 <.10 13 17 61
6/11/96 1030 7.9 3.2 2.9 0.6 1.5 2.8 <.10 13 40 53
7/26/96 1000 8.5 3.3 3.1 0.8 1.2 1.9 <.10 14 23 57
8/15/96 0930 7.9 3.2 2.9 0.7 1 2 <.10 13 16 51
9/11/96 1030 8.7 3.6 3.6 0.8 1.8 2.6 <.10 13 20 66
10/7/96 1040 8.1 3.2 3.5 0.8 2 2.8 <.10 12 14 60
11/5/96 1030 8.3 3.5 3.5 1.2 2 3.2 <.10 13 37 62
12/18/96 1430 7.4 3.1 3.1 1 1.3 2.3 <.10 12 12 51
1/28/97 1000 5 2.3 2.1 1 1.2 2.3 <.10 11 54 46
2/13/97 1030 6.5 2.8 2.5 0.9 1.2 2.3 <.10 12 11 50
3/12/97 1050 8.6 3.7 3.3 0.8 2.4 4.3 <.10 12 13 59
4/15/97 1100 11 5.5 4.8 0.91 4.8 6.4 <.10 13 15 137
5/19/97 1050 9.5 4.6 4.1 0.93 3.6 5.2 <.10 12 7.2 73
6/19/97 1020 8 3.4 3.3 0.9 1.4 2.5 <.10 14 13 57
7/15/97 1100 7.8 2.9 3 0.82 1.1 2.4 <.10 13 6.6 55
8/14/97 1100 8.2 3.2 3.1 0.83 1.4 2.7 <.10 13 9.4 62
9/19/97 1000 8.9 4 3.9 0.97 2.1 2.9 <.10 13 15 64
10/28/97 1030 9.2 4 4 1.3 2.3 3.4 <.10 13 39 67
11/24/97 1000 9.1 3.8 3.7 1.4 1.9 3.3 <.10 13 32 66
12/8/97 1100 9.3 4.1 4.3 1.6 3.5 4.9 <.10 13 44 76
1/12/98 1100 8.7 4.1 4.2 1.2 3.1 4.1 <.10 14 32 75
2/17/98 1100 7.4 3.3 3 0.93 1.6 2.9 <.10 13 18 61
3/24/98 1100 7.7 3.3 3 0.74 1.4 2.8 <.10 13 12 56
4/20/98 1020 8 3.4 3.2 0.65 1.7 5.2 <.10 13 16 60