Iron Horse Trail Lake near DuBois at Swimming Beach
Data updated on: 10/04/2005

Seasonal
Geometric Mean
Geometric Mean for
last 5 samples
Single Sample Maximum
14
Compare to 126
11
Compare to 126
727
Compare to 235
Date
E. coli
(# per 100 ml)
Date
E. coli
(# per 100 ml)
05/02/2005
No Data
07/18/2005
3
05/09/2005
6
07/25/2005
5
05/16/2005
148
08/01/2005
22
05/23/2005
1
08/08/2005
5
05/30/2005
6
08/15/2005
13
06/06/2005
87
08/22/2005
31
06/13/2005
48
08/29/2005
35
06/20/2005
119
09/05/2005
9
06/27/2005
No Data
09/12/2005
11
07/04/2005
727
09/19/2005
6
07/11/2005
23
09/26/2005
15

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

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