Investigation of Climate Change Effect on Groundwater Balance and Level in Plain Ramhormoz
Climate change has a significant impact on surface and groundwater resources. Due to the impact of climate changes on groundwater resources are indirect and slower than surface water, monitoring and sustainability of the resources affected by these changes is very important. In this study investigate effect of climate change on balance and groundwater table in Ramhormoz plain of Khuzestan province with purpose achieve the different potential of water resources with proper management and optimum use of water was done. In this study, as well as meteorological data including precipitation, radiation and daily minimum and maximum temperatures were recorded and after model calibrating in the period 1997-2010 using the scenario A2 by HADCM3 model to predict the climate in the years 2011-2040 were conducted. Lars results will also indicate an increase in annual precipitation (78 mm), increase in the minimum and maximum temperature (0.5 °C) and increase of 254 mm in annual evapotranspiration. The results showed that reviewing the unit hydrograph, the water level generally declined in a 17-year period. According to the balance calculations, the Ramhormoz unconfined aquifer is encountered to reduce the volume of store. So that according to amount of inputs and outputs, the storage changes is -7.33 million cubic meters. Total output and input volume to the Ramhormoz aquifer are 37.16 and 44.49 million cubic meters, respectively. Measured storage volume changes by unit hydrograph according to the coefficient storage and aquifer area were estimated -8.68 million cubic meters that they are confirming the balance calculations.
Journal of Extension and Development of Watershed Managment, Volume:5 Issue:17, 2017
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