Annual Average Dissolve Oxygen and Biochemical Oxygen Demand for Monitored Waterbodies

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2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

Davao City

Davao River

             7.2

            7.2

            7.6

            7.3

            7.2

            7.2

            7.1

            7.7

            5.7

            6.6

            7.3

            7.1

Lasang River

             6.9

            7.1

            7.6

            7.5

            7.2

            7.4

            7.5

  -

  -

  -

  -

  -

Lipadas River

             7.5

            7.2

            7.2

            7.2

            7.1

            6.2

            6.8

  -

  -

            7.0

            6.8

            6.5

Talomo River

             7.6

            7.0

            7.0

            7.1

            6.8

            6.5

            6.7

            6.6

            7.0

            7.0

            7.1

            7.1

Bunawan River

             8.7

            5.8

            6.2

            6.0

            5.5

            6.1

            5.5

  -

  -

  -

  -

  -

Ilang River

  -

            5.7

            6.2

            5.2

            4.9

            6.3

            6.6

  -

  -

  -

  -

  -

Tamugan River

  -

            7.7

            7.9

            8.1

            7.9

            7.9

            7.7

Davao del Sur

Digos River

             7.8

            7.7

            7.9

            8.1

            7.8

            7.5

            8.0

  -

  -

  -

            7.3

            7.3

Padada River

             8.2

            6.5

            7.3

            7.8

            7.2

            5.9

            8.9

  -

  -

  -

            7.0

            6.5

Malita River

             8.5

            8.5

            7.9

            7.3

            7.0

            7.2

            7.5

  -

  -

  -

  -

  -

Sibulan River

             8.0

            7.9

            8.3

            8.2

            8.3

            8.2

            8.2

  -

  -

  -

  -

  -

Mainit River

  -

  -

  -

            7.2

            7.3

            6.9

            7.0

  -

  -

  -

  -

  -

Davao del Norte

Tagum River

             6.5

            7.0

            7.2

            6.4

            7.1

            6.7

            6.3

  -

  -

  -

  -

  -

Tuganay River

             6.8

            6.6

            6.2

            6.7

            5.9

            6.0

            5.1

  -

  -

            6.5

            6.6

            6.5

Hijo River

             7.6

            7.7

            7.7

            7.7

            6.3

            8.0

            7.6

  -

  -

  -

            7.4

            7.1

Saug River

            6.8

            6.9

            6.6

            6.7

  -

  -

  -

  -

  -

Compostela Valley Province

Agusan River

             8.0

            7.6

            7.1

            7.4

            6.6

            6.8

            7.2

  -

  -

  -

            6.9

            7.0

Naboc River

             8.4

            7.7

            8.1

            7.3

            7.5

            7.5

            7.6

            7.2

            6.6

            7.6

            7.0

            7.9

Kingking River

             7.2

            7.2

            7.2

            7.3

            7.5

            6.9

            7.7

  -

  -

  -

            7.2

            7.1

Matiao River

             7.7

            8.1

            7.9

            7.6

            7.7

            8.0

            8.3

  -

  -

  -

            8.0

            7.6

Davao Oriental

Sumlog River

             8.1

            7.4

            7.9

            7.6

            7.2

            7.4

            7.4

  -

  -

  -

  -

  -

Bangaga- Mahan-Ub River

  -

  -

  -

7.5

            6.8

            7.3

            7.4

  -

  -

  -

  -

  -

Bitanagan River

  -

  -

  -

7.2

            6.8

            7.4

            6.9

  -

  -

  -

  -

  -

Cateel River

 -

 -

 -

 -

            5.9

            8.2

            6.4

  -

  -

  -

  -

  -

Dapnan River

 -

 -

 -

 -

6.9

            7.6

            7.4

  -

  -

  -

  -

  -

Manurigao River

 -

 -

 -

 -

            7.9

            7.0

            7.0

  -

  -

  -

  -

  -