Application of Time-Variable Gravity to Groundwater Storage Fluctuations in Saudi Arabia

In the Middle East, water shortage is becoming more and serious due to development of agriculture industry increase in population. Saudi Arabia one most water-consuming countries urgent measures are needed. Therefore, we integrated data from Gravity Recovery Climate Experiment (GRACE), other relevant estimate changes groundwater storage Arabia. The findings as follows: 1) Average annual precipitation (AAP) was calculated be 76.4, 90, 72 mm for entire period, Period I (April 2002 March 2006) II 2006 July 2016), respectively. 2) average TWS variation estimated −7.94 ± 0.22, −1.39 1.35, −8.38 0.34 mm/yr II, 3) +1.56 1.35 during I. 4) higher depletion rate −6.05 II. 5) Both soil texture surface streams study area promote lateral flow carry Arabian Gulf Red Sea. 6) During recharge rates were +9.48 2.37 +4.20 0.15 km 3 Saq aquifer, 7) This approach an informative cost-effective technique assess variability resources large areas efficiently.