Willow Creek Lake at Swimming Beach (Sampling Site 45) |
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.
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 |
.
Week Starting |
Weekly Health Alert |
Level of Microcystin (ppb) |
E. coli (# per 100 ml) |
May 2, 2016 |
No |
0 |
128 |
May 9, 2016 |
No |
0.59 |
35 |
May 16, 2016 |
No |
0.48 |
10 |
May 23, 2016 |
No |
1.79 |
461 |
May 30, 2016 |
No |
0.42 |
308 |
June 6, 2016 |
No |
0.56 |
41 |
June 13, 2016 |
No |
2 |
18 |
June 20, 2016 |
No |
7.77 |
121 |
June 27, 2016 |
No |
14.91 |
6 |
July 4, 2016 |
No |
2.94 |
4 |
July 11, 2016 |
No |
3.61 |
10 |
July 18, 2016 |
No |
8.05 |
43 |
July 25, 2016 |
No |
4.34 |
4 |
August 1, 2016 |
No |
3.7 |
2 |
August 8, 2016 |
No |
17.15 |
3 |
August 15, 2016 |
Yes |
20.72 |
10 |
August 22, 2016 |
Yes |
15.68 |
14 |
August 29, 2016 |
Yes |
30.24 |
2 |
September 5, 2016 |
Yes |
12.74 |
88 |
September 12, 2016 |
No |
9.45 |
6 |
September 19, 2016 |
Yes |
24.08 |
102 |
September 26, 2016 |
Yes |
19.39 |
15 |