Monthly variations of some physical and chemical properties for Al- Dujaila river of Al-Kut city

Abstract

Monthly variations in physio-chemical parameters of Al-Dujaila, one of the main tributaries of the Tigris River were investigated from October 2013 to April 2014. The study location situated in the south-eastern sector of Iraq, and it was surrounded by wide and fertile agricultural lands. Three stations were selected for that. The first station is located at the beginning AL-Dujaila River after branching the Tigris river as control. The second is situated at distance 2 km away from the former represented study area.The latter station is located at 4 km apart from the second one. Samples collectingmonthly, two samples were taken each month. In the present study fourteen physical and chemical parameters were analyzed based on the importance of these parameters. These fourteen parameters are arranged as following: air temperature (17 to 36) ºC, water temperature (10 to 24) ºC, pH (7.02to 8.2), E.C. (1115 to1378) μS/cm, salinity ( 0.71 to 0.90) ppt, DO (7.05 to 11.65) mg/L , BOD ( 1.2 to 7.05) mg/L ,turbidity (21.0 to 65) NTU, TDS (743 to 918) mg/L , TSS (32 to 95) mg/L , T.H2(320 to 500) mg/L , Cl- (104 to 178) mg/L, NO3 (6 to 14.53) mg/L and PO4 (0.16 to 0.60) mg/L.