Box Butte Reservoir at North Swimming Beach

Data updated on: 10/03/2003

Seasonal Geometric Mean	Geometric Mean for last 5 samples	Single Sample Maximum
3 Compare to 126	22 Compare to 126	3654 Compare to 235

Date	E. coli (# per 100 ml)	Date	E. coli (# per 100 ml)
05/05/2003	0	07/21/2003	2
5/12/2003	4	07/28/2003	36
05/19/2003	0	08/04/2003	0
05/27/2003	0	08/11/2003	0
06/02/2003	28	08/18/2003	0
06/09/2003	3654	08/25/2003	3
06/16/2003	6	09/02/2003	260
06/23/2003	6	09/08/2003	37
06/30/2003	34	09/15/2003	12
07/07/2003	0	09/22/2003	14
07/14/2003	4	09/29/2003	3

Note: Data flagged with * did not meet NDEQ's Quality Assurance Standards

For more information, contact
MoreInfo@NDEQ.state.NE.US

Nebraska Department of Environmental Quality
1200 "N" Street, Suite 400
P.O. Box 98922
Lincoln, Nebraska 68509
(402) 471-2186 FAX (402) 471-2909