Abstract: Copper deposit of Maden has been operated since 2000 B.C. and the flotation waste water, slags, waste and metallic water aredirectly charged to Maden Çayı. Thus, plants along Maden Çayı accumulate very high levels of elements. Water, soil and plant samples (as leaves, stem and flower) were collected along Maden Çayı (before and after the discharge point) and at the unpolluted are(Malatya and Kralkızı Dam). Iron contents of samples were determined by flame atomic absorption spectrophotometer. Data for thestatistical significance of plant/soil relationship for iron are summarised. The Phragmites australis (cav) Trin. ex stuedel (r=0.8683)and Carex acuta L. (r=0.8945) species for Fe showed (in leaves) highly significant (P < 0.01) relationship. These plant species areapparently food indicators the these elements and could be successfully used for the further biogeochemical prospecting.