Abstarct: Serow area is located in the north west of Urmia city adjacent to the Iran – Turkey border. The studied area includes two plains of Serow and Hursin. The aquifers of these plains are unconfined types which are formed mostly by gravel, coarse and fine sands, clay and silt. In order to evaluate the hydrogeological and hydrogeochemical characteristics of these plains, information of 11 pizometers and 13 pumping wells was used. In Hursin plain, baxsed on its equipotential map, the dominant groundwater flow is from the north west to the south east. Besides, the hydraulic gradient in this plain varies from one to two percent. In Serow plain, according to the equipotential map, the main direction of groundwater flow is from the north – west, west and South to the South East. Hydraulic gradient in this plain varies from 0.6 to 0.8 percent. On the basis of unit hydrograph of the plain, the groundwater level in Hursin plain from 2004 to 2013 has been reduced about 5.6 meters which is probably due to excessive withdrawal of groundwater. In Serow plain, the groundwater level has not been change significantly from 2004 to 2013. The maximum electrical conductivity in Hursin plain is 480 µmhos/cm and that is about 900 µmhos/cm in Serow plain. The hardness of groundwater in Hursin plain varies from 265 to 315 mg/lit as calcium carbonate while it varies from 280 to 400 mg/lit as CaCO3 in Serow plain.