Présentations Colloques

Oral Presentation
8.10
Session 8.10: Recent developments in groundwater modeling and mathematical tools in Hydrogeology
Al-dabbas Moutaz
PROPOSED TWO DIMENSIONAL MATHEMATICAL MODEL FOR GROUNDWATER MANAGEMENT OF AL HASHIMYIA AREA -BABYLON GOVERNORATE-IRAQ
ABSTRACT**Groundwater is vital for most villages far of the Lesser Zab River, Kurdistan region, IRAQ. Decreasing of groundwater recharge is expected due to the global climate change and human consumption. Uses groundwater for drinking, agriculture and municipality are from the unconfined aquifer of BAi Hassan Formation, the Lesser Zab River Basin. Therefore, predict future groundwater flow conditions, and pumping rate is needed. Ground Water modeling system is used for BAi Hassan unconfined aquifer management. Bai Hassan Formation (Pliocene – Pleistocene) is exposed and appears as a large potential source of water in the study area. Depending on the monitoring of about 175 wells in the area during 2014, boundary conditions are determined to simulate the water enters or leaves the model domain. Three different boundary conditions are identified in groundwater modeling+ these are specified head, specified flow and mixed type (head dependent) boundaries. After running two simulations for every five years, the mathematical model shows that there will be a decrease in hydraulic head of the unconfined aquifer in the modeled area on the two sides of the Lesser Zab River. The recommended solution to prevent more depletion is to reduce groundwater utilization especially in the middle and south parts of Bai Hassan unconfined aquifer. As well as, it is recommended to drill 500 wells within the next 10 years, with discharge rate equal to 20 l sec and with pumping rate of 8 hours daily. ********
Iraq