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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)

Colusa Basin Drain at Road 99E near Knights Landing, California

Trace elements 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

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

Date Time Arsenic (µg/L) Barium (µg/L) Beryllium (µg/L) Cadmium (µg/L) Chromium (µg/L) Cobalt (µg/L) Copper (µg/L) Lead (µg/L) Manganese (µg/L) Molybdenum (µg/L) Nickel (µg/L) Silver (µg/L) Zinc (µg/L) Antimony (µg/L) Aluminum (µg/L ) Selenium (µg/L) Uranium (µg/L )
2/7/96 1030 2 51 <1.0 <1.0 2 <1.0 3 <1.0 12 <1.0 2 <1.0 <1.0 <1.0 6 <1 <1.0
3/6/96 1030 1 64 <1.0 <1.0 2 <1.0 3 <1.0 5 2 3 <1.0 <1.0 <1.0 5 <1 <1.0
4/23/96 1030 2 80 <1.0 <1.0 2 <1.0 2 <1.0 31 2 2 <1.0 <1.0 <1.0 9 <1 1
5/22/96 1000 2 63 <1.0 <1.0 <1.0 <1.0 4 <1.0 2 2 3 <1.0 <1.0 <1.0 8 <1 <1.0
6/14/96 1000 5 108 <1.0 <1.0 2 <1.0 6 <1.0 4 4 3 <1.0 2 <1.0 10 <1 1
7/23/96 1000 6 114 <1.0 <1.0 4 <1.0 3 <1.0 29 4 3 <1.0 <1.0 <1.0 4 <1 1
8/27/96 1000 5 88 <1.0 <1.0 <1.0 <1.0 2 <1.0 15 3 4 <1.0 <1.0 <1.0 5 <1 <1.0
9/9/96 1030 3 80 <1.0 <1.0 2 <1.0 2 <1.0 10 2 2 <1.0 <1.0 <1.0 4 <1 <1.0
10/18/96 0950 4 90 <1.0 <1.0 2 <1.0 2 <1.0 2 2 3 <1.0 <1.0 <1.0 6 <1 1
11/7/96 1330 3 73 <1.0 <1.0 3 <1.0 3 <1.0 26 2 5 <1.0 4 <1.0 5 <1 <1.0
12/3/96 1000 2 72 <1.0 <1.0 4 <1.0 2 <1.0 43 2 3 <1.0 <1.0 <1.0 4 <1 <1.0
1/14/97 1130 2 85 <1.0 <1.0 2 <1.0 3 <1.0 4 3 4 <1.0 <1.0 <1.0 4 <1 1
2/18/97 1130 2 91 <1.0 <1.0 1 <1.0 3 <1.0 47 3 3 <1.0 <1.0 <1.0 5 <1 1
3/18/97 1030 2 90 <1.0 <1.0 2 <1.0 2 <1.0 13 2 3 <1.0   <1.0 4 <1 1
4/9/97 1100 3 86 <1.0 <1.0 4 <1.0 2 <1.0 32 2 3 <1.0 2 <1.0 5 <1 1
5/23/97 1030 4 94 <1.0 <1.0 3.5 <1.0 2.7 <1.0 17 3.2 2.7 <1.0 <1.0 <1.0 4.4 <1 1.3
6/17/97 1000 4 95 <1.0 <1.0 2.5 <1.0 4.1 <1.0 1.2 3.3 3 <1.0 1.5 <1.0 4.7 <1 1.4
7/10/97 0940 4 105 <1.0 <1.0 6.3 <1.0 1.7 <1.0 29 3.2 2.4 <1.0 <1.0 <1.0 4.5 <1 1.1
8/26/97 1100 3 88 <1.0 <1.0 1.2 <1.0 2.8 <1.0 8.3 2.7 2.8 <1.0 2.6 <1.0 5.9 <1 <1.0
9/18/97 1000 2 87 <1.0 <1.0 3.3 <1.0 2.6 <1.0 18 2.3 1.9 <1.0 6.1 <1.0 6.1 <1 <1.0
10/30/97 1040 4 73 <1.0 <1.0 2.4 <1.0 2.1 <1.0 62 2.3 2.6 <1.0 <1.0 <1.0 6.1 <1 <1.0
11/12/97 1130 3 76 <1.0 <1.0 4.6 <1.0 2 <1.0 71 2.2 2.9 <1.0 2.9 <1.0 6.3 <1 <1.0
12/17/97 1040 2 66 <1.0 <1.0 1.3 <1.0 2.9 <1.0 11 2 3.3 <1.0 1 <1.0 4.5 <1 <1.0
1/21/98 1030 2 65 <1.0 <1.0 4 <1.0 3.1 <1.0 15 1.6 3.6 <1.0 2 <1.0 8.3 <1 <1.0
2/26/98 1100 1 46 <1.0 <1.0 2.8 <1.0 2.5 <1.0 2.2 <1.0 2.4 <1.0 <1.0 <1.0 5.7 <1 <1.0
3/11/98 1100 2 80 <1.0 <1.0 1.8 <1.0 2.1 <1.0 15 1.5 2.7 <1.0 <1.0 <1.0 5.6 <1 <1.0
4/15/98 1130 <1 53 <1.0 <1.0 2.6 <1.0 1 <1.0 1.8 <1.0 1.7 <1.0 1 <1.0 8.7 <1 <1.0

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