The feasibility study of pressurized irrigation systems performance based on water quality (Case Study: Hamedan Province plains)

One of the most important factors for applying of pressurized irrigation systems is water quality. So, it is essential to study feasibility of pressurized irrigation systems based on water quality, prior to their performance. It also helps to prevent energy, investment and resources losses. In the present study, the possibility of performance of pressurized irrigation system (sprinkler and drip irrigation system) using geographic information systems (GIS) and its analytical functions was investigated based on groundwater quality in the plains of Hamedan province. The maps and obtained results showed that there were maximum limitations with regard to water quality in the northern and central plains of study (Kaboudarahang, Razan-Qhahavand and Hamedan-Bahar plain). For sprinkler irrigation systems, the most serious limitation was observed in 86.54% of Kaboudarahang plain area. Razan-Qhahavand and Hamadan-Bahar plains, with 70.52% and 33.83%, respectively, were placed in the next rank orders. Also, for drip irrigation system, Razan-Qhahavand is the plain with poor water quality with 38.52% serious limitation. Furthermore, it is Tuyserkan and Nahavand plains which have the most suitable conditions to use pressurized irrigation systems regarding groundwater quality.