Spatio-temporal evaluation of the surface water quality in the middle Nile Delta using Palmer's algal pollution index

One of the major differences between irrigation canals and drainage water was the algal community structure where the drainage water was characterized by the abundance of Euglenophyta and Chlamydomonas spp. and rare occurrences of Bacillariophyta except the last station of El-Gharbia main drain, which was of estuary nature.