Trophic state

Total P (mg∙m−3)

Total N (mg∙m−3)

Lakes

Oligotrophic

<10

< 350

Mesotrophic

10 - 30

350 - 650

Eutrophic

30 - 100

650 - 1200

Hypereutrophic

>100

>1200

Streams

Oligotrophic

<25

<700

Mesotrophic

25 - 75

700 - 1500

Eutrophic

>75

>1500

Marine

Oligotrophic

<10

<260

Mesotrophic

10 - 30

260 - 350

Eutrophic

30 - 40

350 - 400

Hypereutrophic

>40

>400