Two Rivers State Recreation Area Lake #4

Data updated on: 11/18/2004

Seasonal Geometric Mean	Geometric Mean for last 5 samples	Single Sample Maximum
17 Compare to 126	19 Compare to 126	488 Compare to 235

Date	E. coli (# per 100 ml)	Date	E. coli (# per 100 ml)
05/03/2004	6	07/19/2004	11
05/10/2004	6	07/26/2004	3
5/17/2004	11	08/02/2004	1
05/24/2004	27	08/09/2004	488
05/31/2004	15	08/16/2004	27
06/07/2004	44	08/23/2004	19
06/14/2004	33	08/30/2004	15
06/21/2004	43	09/06/2004	15
06/28/2004	96	09/13/2004	10
07/05/2004	8	09/20/2004	17
07/12/2004	11	09/27/2004	53

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