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Organization(s):Um thar alghfari basic school Student(s):Laila Nasser Al - Surihi Grade Level:Secondary School (grades 9-12, ages 14-18) GLOBE Teacher(s):nawal alshamsi Contributors:Mrs. Moza Al-Khamisani the officials of the General Directorate of Regional Municipalities and Water Resources in Buraimi Governorate and also STEM specialists Ms. Mona El Naqbi Hudhayfah bin Mahsin school Report Type(s):International Virtual Science Symposium Report Protocols:Soil pH, Soil Particle Density, pH, Alkalinity, Conductivity, Salinity (including Titration) Presentation Poster: View Document Optional Badges: Be a Collaborator, Be a Data Scientist, Be a STEM Professional Language(s): Date Submitted:04/09/2019

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The present study aimed at detecting the effect of rainwater on the characteristics of groundwater in Al Buraimi Governorate. he people in the villages which are depending on ground water sources noticed water taster change after the rain and most of people which I spoke with them are emphasize thats. Therefore, two places were chosen for the application of the study: the village of the Al Mualaqa and the village of Al Wasit because of the abundance of rainfall and easy access to them and the dependence of the people on the ground water, unlike the cities that rely on desalinated water. The research questions are: What is the impact of rainwater on the salinity of groundwater in the villages of Al Mualaqa and Al Wasit? What is the effect of rainwater on pH (acidity) of groundwater in the villages of Al-Mualaqa and Al-Wasit? And the effect of soil on the characteristics of groundwater after rainfall. The water protocol was applied to rainwater and groundwater before and after rainfall, and the measurements of acidity and conductivity as well as the soil protocol in the specified areas. The results were as follows: The data show that after rainfall, the salinity of the groundwater increased by approximately 300 ppm and its pH decreased by 0.8. The soil in these areas is acidic with a pH number (6). In collaboration with the staff of the Water Resources Department, it was found that the rainwater melted a layer of salts of the soil such as sodium chloride, or sodium fluoride, which increased salinity of the water and reduced pH. Therefore, the study confirmed that rainwater affects groundwater due to the soil characteristics of these areas. We recommend using single water filters in kitchens and in drinking refrigerators to balance salts from any climatic changes that lead to soil salinity change especially for people who are suffer from blood pressure and kidney disease. In addition to raising the awareness of parents who rely on groundwater through the media or awareness campaigns by the concerned authorities and follow the changes in water characteristics periodically.

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