TSIChlPSDTrophic Class< 30—400—2.60—12> 8—4Oligotrophic40—502.6—2012—244—2Mesotrophic50—7020—5624—962—0.5Eutrophic70—100+56—155+96—384+0.5— < 0.25Hypereutrophic+ Relationships between Trophic State Index (TSI), chlorophyll (Chl), phosphorus (P, both micrograms per litre), Secchi depth (SD, metres), and Trophic Class (after Carlson 1996)
Trophic State IndexChlorophyll (µg/l)Phosphorus (µg/l)Secchi depthTrophic Class< 30—400—2.60—12> 8—4Oligotrophic40—502.6—2012—244—2Mesotrophic50—7020—5624—962—0.5Eutrophic70—100+56—155+96—384+0.5— < 0.25Hypereutrophic+ Relationships between Trophic State Index (TSI), chlorophyll (Chl), phosphorus (P, both micrograms per litre), Secchi depth (SD, metres), and Trophic Class (after Carlson 1996)
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TSIChlPSDTrophic
Trophic State IndexChlorophyll (µg/l)Phosphorus (µg/l)Secchi depthTrophic