Water quality and trophic status of Lake Mariut in Egypt and its drainage water after 8-year diversion.

By comparing the N-form concentration values of the current study (8 years after the diversion of pollution sources) with the corresponding earlier values (Table 3 ), it was noticed that (1) NH 4 re-increased again after its recorded depletion (3 years after the diversion), but still lower than those values obtained in the 3rd period of rehabilitation); (2) DIN was showed a relatively same trend of NH 4 ; and (3) generally, there was a decreasing trend in TN content from the 3rd rehabilitation period till current period.

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