TY - JOUR
T1 - A WEAP-MODFLOW surface water-groundwater model for the irrigated Miyandoab plain, Urmia lake basin, Iran
T2 - Multi-objective calibration and quantification of historical drought impacts
AU - Dehghanipour, Amir Hossein
AU - Zahabiyoun, Bagher
AU - Schoups, Gerrit
AU - Babazadeh, Hossein
N1 - Accepted author manuscript
PY - 2019
Y1 - 2019
N2 - This study develops and applies the first coupled surface water-groundwater (SW-GW) flow model for the irrigated Miyandoab plain located in the Urmia basin, in the northwest of Iran. The model is implemented using a dynamic coupling between MODFLOW and WEAP and consists of spatially distributed monthly water balances for the aquifer, root-zone, rivers, canals, and reservoirs. Multi-objective calibration of the model using river discharge and GW level data yields accurate simulation of historical conditions, and results in better constrained parameters compared to using either data source alone. Model simulations show that crop water demand cannot be met during droughts due to limited GW pumping capacity, and that increased GW pumping has a relatively strong impact on GW levels due to the small specific yield of the aquifer. The SW-GW model provides a unique tool for exploring management options that sustain agricultural production and downstream flow to the shrinking Urmia Lake.
AB - This study develops and applies the first coupled surface water-groundwater (SW-GW) flow model for the irrigated Miyandoab plain located in the Urmia basin, in the northwest of Iran. The model is implemented using a dynamic coupling between MODFLOW and WEAP and consists of spatially distributed monthly water balances for the aquifer, root-zone, rivers, canals, and reservoirs. Multi-objective calibration of the model using river discharge and GW level data yields accurate simulation of historical conditions, and results in better constrained parameters compared to using either data source alone. Model simulations show that crop water demand cannot be met during droughts due to limited GW pumping capacity, and that increased GW pumping has a relatively strong impact on GW levels due to the small specific yield of the aquifer. The SW-GW model provides a unique tool for exploring management options that sustain agricultural production and downstream flow to the shrinking Urmia Lake.
KW - MODFLOW
KW - Multi-objective calibration
KW - Soil moisture method
KW - Surface water-groundwater
KW - Urmia lake basin
KW - WEAP
UR - http://www.scopus.com/inward/record.url?scp=85069925418&partnerID=8YFLogxK
U2 - 10.1016/j.agwat.2019.105704
DO - 10.1016/j.agwat.2019.105704
M3 - Article
AN - SCOPUS:85069925418
SN - 0378-3774
VL - 223
JO - Agricultural Water Management
JF - Agricultural Water Management
M1 - 105704
ER -