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2010

The 2010 bloom season extended from April into January, 2011. Twenty-two advisories were issued that were in effect for a total of 1,412 days (advisory-days). The number of advisories increased from six in 2005 to 22 in 2010. The increase may indicate that cyanobacteria blooms are increasing in severity but may also reflect enhanced surveillance efforts among local, state and federal partners. Get complete details in the 2010 Bloom Season Recap (pdf)

This map displays the location of each advisory (in sequence). See the chart for detailed information, including links to the original advisories. Links are displayed by the date an advisory was issued (start date) or lifted (end date)

            

 

  No.
 Waterbody
 Region
  County    
 Start Date 
  End Date   
No. of Days 
1
 Willow Lake 
Southwest 
  Jackson
120
2
Lost Cr Lake
Southwest
Jackson
18
3
Lemolo Lake
Southwest
Douglas
32
4
Diamond Lake
Southwest
Douglas
   8/03/2010
19
5
Willow Creek Reservoir
Northeast
Morrow
113
6
Fish Lake
Southwest
Douglas
35
7
Fairview Lake
Willamette
Multnomah
   7/27/2010    1/18/2011       175
   8
Haystack Reservoir
Central
Jefferson
  8/04/2010
131
9
Golden Gardens Pond
Willamette
Lane
70
10
Fish Lake
Southwest
Jackson
14
11
Dexter Reservoir
Willamette
Lane
40
12
Gerber Reservoir
Southeast
Klamath
104
13
Whetstone Pond
Southwest
Jackson
16
14
 South Umpqua River
Lawson Bar area
 
Southwest
Douglas
106
15
Blue Lake
Willamette
Multnomah
40
16
Sru Lake
Southwest
Coos
36
17
North Fork Reservoir
Willamette
Clackamas
  9/14/2010 
12
18
Dorena Reservoir
Willamette
Lane
24
19
Blue River Reservoir
Willamette
Lane
25
20
Lost Creek Lake
Southwest
Jackson
   1/14/2011       106
21
Tenmile Lake
Southwest
Coos
   1/13/2011       112
22
Willow Lake
Southwest
Jackson
64

Find historical advisory information by year in the algae archive.