2009

2009 Algae Bloom Advisories

The 2009 algae bloom season extended from May to December. Twenty-one heath advisories were issued that were in effect for a total of 727 days (advisory-days). The number of public health advisories issued per year has increased from six in 2005 to 21 advisories in 2009. Get complete details in the 2009 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)

2009 Advisories

Number	Waterbody	Region	County	Start Date	End Date	No. of Days
1	Hill Creek Reservoir	Willamette	Lane	5/21/2009	6/16/2009	26
2	Lost Creek Lake	Southwest	Jackson	6/15/2009	6/29/2009	14
3	Crane Prairie Reservoir	Central	Deschutes	6/18/2009	7/09/2009	21
4	Odell Lake	Central	Klamath	7/22/2009	8/12/2009	21
5	Whetstone Pond	Southwest	Jackson	7/23/2009	9/09/2009	48
6	Lemolo Lake	Southwest	Douglas	7/23/2009	8/18/2009	26
7	Hill Creek Reservoir	Willamette	Lane	7/30/2009	8/31/2009	32
8	Devils Lake	Northwest	Lincoln	7/31/2009	9/08/2009	39
9	Crane Prairie Reservoir	Central	Deschutes	7/31/2009	8/12/2009	12
10	Wickiup Reservoir	Central	Deschutes	8/12/2009	8/31/2009	19
11	Dexter Reservoir	Willamette	Lane	8/13/2009	9/28/2009	46
12	Dorena Reservoir	Willamette	Lane	8/13/2009	10/23/2009	71
13	Paulina Lake	Central	Deschutes	8/27/2009	9/21/2009	25
14	Wickiup Reservoir	Central	Deschutes	9/02/2009	9/25/2009	23
15	Elk Creek @ Umpqua River	Southwest	Douglas	9/04/2009	9/22/2009	18
16	Sru Lake	Southwest	Coos	9/09/2009	11/30/2009	82
17	Willow Creek lake	Northeast	Morrow	9/11/2009	10/19/2009	38
18	Tenmile Lake	Southwest	Coos	9/18/2009	11/30/2009	73
19	Haystack Reservoir	Central	Jefferson	9/18/2009	11/02/2009	45
20	Lost Creek Lake	Southwest	Jackson	9/18/2009	10/13/2009	25
21	Blue Lake	Willamette	Multnomah	10/14/2009	11/06/2009	23

Find historical advisory information by year in the algae archive.

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