Hydrogeochemical modeling of waters in Mogan and Eymir Lakes special environmental protection area, Ankara, Turkey

Abstract

On the basis of water‐rock interactions, hydrogeochemical characteristics of spring, stream, wetland, and lake waters in the Mogan and Eymir Lakes special environmental protection area of Turkey were modeled using a reaction‐path simulation method. Geochemical characteristics of surface waters, mineralogical sources of ion concentrations in the springs, mixing, and evaporation/dilution relationships between the compositions of input flows and the lakes and between the compositions of inflows and wetlands were quantitatively determined. Major ion distributions in spring water reflect mineralogical characteristics of the lithologies that have been traversed by related springs before reaching the surface. Mixing and evaporation/dilution calculations show that approximately 41 to 83% of the ion concentrations in the Mogan Lake is provided by groundwater and the remaining is supplied by streams. In addition to the mixing, cation exchange and carbon dioxide (CO2) outgasing reactions are also required to obtain the observed lake composition. Chemistry of the wetland waters provided by Mogan Lake by way of groundwater and the regulator canal is primarily controlled by CO2 ingasing and exchange reactions. Small amounts of dilution by other sources are also required. The majority of ion concentrations in Eymir Lake water, on the other hand, is supplied by the wetland area. Ion concentration contributions of groundwater from other areas to the Eymir Lake are calculated to be approximately 8 to 59% of the total input. Silica precipitation, exchange, and evaporation are the effective processes in the production of Eymir Lake water concentrations. In general, the ranges of model results are consistent with those of hydrological data.

Hydrogeochemical fingerprints of a mixohaline wetland in the Mediterranean: Güllük coastal wetland systems- GCWS (Muğla, Turkey)

“…e.g. inland wetlands: Ekmekçi, 1990Camur et al, 1997;Samsunlu et al, 2002;Yalcin et al, 2007;Bozdağ and Göçmez, 2011;Bayari and Yildiz, 2012;Şener et al, 2013;Karakuş et al, 2017;Varol and Köse, 2018;Okan and Güven, 2019;Davraz et al, 2019).…”

“…• Coastal wetlands • Inland wetlands • Human-made wetlands There have been many studies in recent years about ornithological and floral/faunal studies, as well as hydrogeological and hydrogeochemical studies, of both coastal and inland wetlands in Turkey (e.g.,coastal wetlands: Somay and Filiz, 2003;Somay et al, 2008;Somay and Gemici, 2009;Demirel et al, 2011;Somay and Gemici, 2012;Demir Yetiş et al, 2014;Aydın et al, 2015;Somay, 2016. e.g., inland wetlands: Ekmekçi, 1990Camur et al, 1997;Samsunlu et al, 2002;Yalcin et al, 2007;Bozdağ and Göçmez, 2011;Bayari and Yildiz, 2012;Şener et al, 2013;Karakuş et al, 2017;Varol and Köse, 2018;Okan and Güven, 2019;Davraz et al, 2019).…”

Hydrogeochemical Evaluation of Heavy Metal Loadings to Waters and Sediments by Leachate: A Case Study from the Golbasi Waste Disposal Site, Ankara, Turkey

“…The area lies in the Mogan and Eymir Lakes Special Environmental Protection Area. Although municipal waste disposal operations at the site had ended by 1994, data collected in previous studies suggest that the chemical content of the leachate has been deteriorating the quality of ground and surface waters of both Eymir Lake and the local swamp (e.g., METU, 1995;Camur et al, 1997). 0020-6814/01/561/930-15 $10.00…”