Ecological risk assessment of heavy metals after dredging in Mogan Lake, Turkey

The lake management strategy of sediment dredging (removal) is periodically undertaken in shallow, eutrophic Mogan Lake, an important recreation area. This study aims to use certain indices - enrichment index (EF), contamination/pollution (CF), degree contamination (Cd), pollution load (PLI), geoaccumulation (Igeo), potential ecological risk (Eri), integrated (PER), and mean probable effect concentration quotient (mPEC-Q) evaluate the state after dredging. With this mind, was completed, two stations littoral zone were selected. Station I located especially where it would be reached by wastewater from mineral processing facilities domestic areas; II, residential agricultural wastewater. Surface samples taken repeatedly May November 2020 using a grabber. According findings, a) Among heavy metals studied (Hg, As, Cd, Cr, Pb, Ni, Cu, Zn), Cd found have highest indices; b) (PLI) values (1.30-2.26) suggest metal sediment, (Igeo) show intensive Pb at both months; c) In terms significant level index; d) (PER) indicates that all present moderate levels. Ni As had negative biological effects. results indicate Dredging not very effective tool for reducing sediment; long as anthropogenic pollutants continue enter basin, levels should routinely monitored, particularly those with effects on sediment: As. It predicted findings will contribute sediment-focused monitoring efforts organizations local governments.