Rockford Lake at SW Beach


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 - Holmesville
Gage County
This lake is not sampled on a regular schedule
Toxic Algae Data updated on:
09/30/2010

Bacteria (E. coli) data updated:
09/30/2010

Level of Microcystin (ppb)
E. coli (# per 100 ml)
1.59
21
This Lake is NOT on Toxic Algae Health Alert.

Rockford Lake at beach located at south edge of dam.


On the table below, the level to trigger a toxic algae Health Alert is 20 parts per billion for the toxin Microcystin. Health Alerts stay in effect until the level stays below 20 ppb for two consecutive weeks

In the Bacteria (E.coli) column, a single sample of 235 counts (or higher) per 100 ml is considered a higher risk for illness through ingestion.



Toxic Algae (Microcystin) & Bacteria (E. coli) Data
This table shows all sampling results for toxic algae and bacteria collected in 2009.

Week Starting
Weekly Health
Alert
Level of Microcystin (ppb)
E. coli
(# per 100 ml)
05/03/2010
No
0.1
68
05/10/2010
No
0.14
86
05/17/2010
No
0.13
44
05/24/2010
No
0.31
142
05/31/2010
No
0.11
4
06/07/2010
No
0.47
11
06/14/2010
No
0.46
5
06/21/2010
No
5.25
205
06/28/2010
No
0.4
21
07/05/2010
No
4.31
166
07/12/2010
No
1.71
07/19/2010
No
0.7
40
07/26/2010
No
0.44
10
08/02/2010
No
3.66
3
08/09/2010
No
2.77
1
08/16/2010
No
11.9
1
08/23/2010
No
1.18
4
08/30/2010
No
0.67
0
09/06/2010
No
0.17
1
09/13/2010
No
4.25
1
09/20/2010
No
0
4
09/27/2010
1.59
21




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