Carter Lake @ North Boat Ramp

The table below shows the most recent sampling information for
toxic algae (Microcystin) and bacteria (E.coli),
Samples are typically collected on Monday and posted on the web site on Thursday or Friday.

Nearest City - Omaha
Douglas County
This Lake is sampled weekly.
Data updated on: 09/27/2007
Level of Microcystin (ppb)
E. coli (# per 100 ml)
0.97
345
This Lake is NOT on Toxic Algae Health Alert.

Bacteria (E. coli) Information
The chart below shows sampling results for bacteria collected in 2007.

Seasonal
Geometric Mean
Geometric Mean for
last 5 samples
Single Sample Maximum
23
Compare to 126
11
Compare to 126
345
Compare to 235


Toxic Algae (Microcystin) & Bacteria (E. coli) Data
This table shows all sampling results for toxic algae and bacteria collected in 2007.

Week Starting
Weekly Health
Alert
Level of Microcystin (ppb)
E. coli
(# per 100 ml)
04/30/2007
05/07/2007
Yes
40.7
05/14/2007
Yes
25.2
24
05/21/2007
Yes
31
11
05/28/2007
Yes
19.1
308
06/04/2007
Yes
33.1
10
06/11/2007
Yes
11.0
9
06/18/2007
No
10.0
65
06/25/2007
No
11.5
44
07/02/2007
No
8.47
16
07/09/2007
No
7.4
204
07/16/2007
No
6.37
16
07/23/2007
No
3.09
30
07/30/2007
No
2,65
58
08/06/2007
No
0.73
67
08/13/2007
No
0.23
1
08/20/2007
No
0.62
100
08/27/2007
No
0.69
17
09/03/2007
No
0.5
0
09/10/2007
No
0.39
12
09/17/2007
No
0.80
24
09/24/2007
No
0.97
345

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