Willow Creek Reservoir 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 1, 2017 |
No |
1.13 |
13 |
May 8, 2017 |
No |
0.18 |
10 |
May 15, 2017 |
No |
0 |
23 |
May 22, 2017 |
|
|
64 |
May 29, 2017 |
No |
0.80 |
33 |
June 5, 2017 |
No |
1.48 |
52 |
June 12, 2017 |
No |
0 |
20 |
June 19, 2017 |
No |
2.89 |
2 |
June 26, 2017 |
No |
5.42 |
2 |
July 3, 2017 |
No |
5.04 |
3 |
July 10, 2017 |
No |
5.96 |
9 |
July 17, 2017 |
No |
5.88 |
0 |
July 24, 2017 |
No |
3.7 |
2 |
July 31, 2017 |
No |
10.50 |
3 |
August 7, 2017 |
Yes |
23.24 |
105 |
August 14, 2017 |
Yes |
6.93 |
6 |
August 21, 2017 |
No |
14.42 |
2 |
August 28, 2017 |
No |
14.91 |
3 |
September 4, 2017 |
No |
6.86 |
5 |
September 11, 2017 |
No |
4.54 |
2 |
September 18, 2017 |
No |
2.59 |
8.50 |
September 25, 2017 |
No |
4.32 |
15 |