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

Mercury in unfiltered water

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

[ng/L - nanograms per liter]

Date	Time	Mercury in unfiltered water (ng/L)
2/7/96	1030
3/6/96	1030	14.36
4/23/96	1030	5.73
5/22/96	1000	11.52
6/14/96	1000	9.17
7/23/96	1000	6.74
8/27/96	1000	5.45
9/9/96	1030	7.12
10/18/96	0950	4.64
11/7/96	1330	6.08
12/3/96	1000	6.80
1/14/97	1130	15.02
2/18/97	1130	11.77
3/18/97	1030	19.27
4/9/97	1100	8.14
5/9/97	0900	9.76
6/17/97	1000	6.90
7/28/97	1100	7.80
8/26/97	1100	12.89
9/18/97	1000	7.63
10/30/97	1040	6.24
11/12/97	1130	5.83
12/17/97	1040	9.25
1/21/98	1030	10.51
2/26/98	1100	10.82
3/11/98	1100	7.76
4/15/98	1130	10.76