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Table 2 Daily water level changes at Hukou Station in the northern part of Poyang Lake from April to June during 1993–2016

From: Impact of continuous low water stage on the breeding environment of Oncomelania hupensis: a case study of Poyang Lake area in China

Year

Monthly mean water level

Water level (9 m)

Water level (11 m)

April

May

June

April

May

June

April

May

June

Rising date

Rising days

Rising date

Rising days

Rising date

Rising days

Rising date

Rising days

Rising date

Rising days

Rising date

Rising days

1993

9.30

11.99

13.75

1

28

 

31

 

30

–

0

8

24

 

30

1994

10.54

12.79

14.76

7

24

 

31

 

30

15

16

 

31

 

30

1995

10.43

13.06

16.52

10

21

 

31

 

30

19

12

 

31

 

30

1996

10.83

10.66

13.93

1

30

 

31

 

30

7

15

19

13

 

30

1997

10.79

11.79

12.74

3

28

 

31

 

30

21

10

 

31

 

30

1998

11.74

12.59

14.99

1

30

 

31

 

30

1

29

10

22

 

30

1999

8.83

12.72

14.56

19

12

 

31

 

30

23

8

 

31

 

30

2000

9.56

9.50

13.47

12

19

 

18

 

30

–

0

2

3

5

26

2001

9.69

12.65

12.82

10

21

 

31

 

30

27

4

 

29

10

21

2002

9.58

15.37

14.99

20

11

 

31

 

30

25

6

 

31

 

30

2003

10.40

13.43

13.37

1

30

 

31

 

30

17

14

 

31

 

30

2004

8.03

11.74

13.28

–

0

2

29

 

30

–

0

12

20

 

30

2005

8.79

11.64

15.17

17

5

7

25

 

30

–

0

13

19

 

30

2006

10.04

11.86

13.74

1

20

 

31

 

30

17

9

11

21

 

30

2007

7.72

8.69

11.77

–

0

1

13

2

29

–

0

–

0

14

17

2008

9.80

10.02

12.49

6

25

 

31

 

30

–

0

–

0

11

20

2009

9.32

11.82

12.82

20

11

 

31

 

30

25

6

 

31

 

30

2010

11.29

13.78

15.85

10

21

 

31

 

30

15

16

 

31

 

30

2011

7.19

7.42

12.16

–

0

–

0

8

23

–

0

–

0

12

19

2012

9.60

14.27

15.52

16

15

 

31

 

30

27

4

 

31

 

30

2013

10.19

12.42

14.27

1

30

 

31

 

30

10

2

10

22

 

30

2014

9.06

12.45

13.88

19

12

 

31

 

30

30

1

 

31

 

30

2015

10.59

11.79

16.05

4

27

 

31

 

30

7

12

14

17

 

30

2016

12.75

15.49

15.97

1

30

 

31

 

30

8

23

 

31

 

30

  1. - Water level does not exceed 9 m or 11 m in the current month