ISOTOPIC COMPOSITION OF AL-HABBANIYA LAKE AND GROUNDWATER SURROUNDING IT, AL-ANBAR GOVERNORATE, IRAQ

Abstract

In this study, environmental isotopes composition (d18 O and dD) were conducted on Al-Habbaniya lake, stream channels and wells during (August, 2020 and March, 2021). The results showed that there was a typical spatial distribution of surface isotope in August and March. Relatively high d 18O values with low d-excess were found in groundwater (W1) in August and March and the lowest d 18O with highest d-excess were found in surface water (Ch2) in August and March. Also, the results of isotopes values showed there is a little difference between the periods due to the seasonal change and the trend of distribution can be attributed to evaporation, drainage flow; the origin of salinity in Al-Habbaniya lake water have been resulted from evaporation processes, while in groundwater, the origin of salinity is caused by dissolution processes. This study provides a reference for the long-term monitoring and is important for the regional water resource