Year

Harmful Algal Blooms

Freshwater

Seawater

Daechung Lake, Daejeon City

Naro Island, Goheung County

Onset Date

Duration

(day)

Species

Heavy Rainfall

Date/Precipitation (mm)

Onset

Date

Duration

(day)

Species

Heavy Rainfall

Date/Precipitation (mm)

2001

9.1

35

Microcystis

7.21/61

8.14

41

Cochlonidium

7.5/119

2002

9.19

16

Microcystis

8.6/175

8.2

57

Cochlonidium

7.2/117

2003

9.9

39

Microcystis

7.9/155

8.13

62

Cochlonidium

7.3/59

2004

9.3

14

Oscillatoria

7.16/131

8.5

30

Cochlonidium

8.22/86

2005

8.2

67

Microcystis/ Anabaena

7.11/178

7.19

58

Cochlonidium

6.10/88

2006

8.4

62

Anabaena

7.12/49

8.6

36

Cochlonidium

7.10/151

2007

10.6

14

Aphanizomenon/ Microcystis

7.10/63

7.31

50

Cochlonidium

7.1/108

2008

7.25

15

Anabaena

6.18/81

7.30

62

Cochlonidium

6.1/70

2009

8.6

15

Microcystis

7.9/88

10.28

17

Cochlonidium

7.7/164

2010

9.2

43

Aphanizomenon

7.17/71

9.17

3

Cochlonidium

7.16/64

2011

8.12

57

Oscillatoria/ Aphanizomenon

7.8/85

-

-

-

5.11/92

2012

9.6

63

Microcystis/ Aphanizomenon

7.15/111

7.27

75

Cochlonidium

7.11/119

Average

8.28

37

Microcystis (7)/ Oscillatoria (2)/ Anabaena (3)/ Aphanizomenon (4)

7.13/104

8.12

45

Cochlonidium

7.4/103