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Eastern San Joaquin Groundwater Basin Groundwater Management Plan The GDC is essential to the groundwater management activities of the County. Currently, there is no centralized groundwater information source for San Joaquin County. Monitoring efforts undertaken by the San Joaquin County Flood Control and Water Conservation District (SJCFC&WCD), the San Luis and Delta-Mendota Water Authority (SLDMWA), the Northeastern San Joaquin County Groundwater Banking Authority (GBA), and other individual agencies and water districts generate data that reside in separate databases. The GDC would become the repository for groundwater data and would facilitate groundwater analysis essential to the groundwater management objectives of San Joaquin County. The GDC is not only a technical tool, but a public outreach tool as well. Through the internet, water users including County and agency staff, industry professionals, decision makers, and the general public will have access to groundwater data and historic semi-annual reports. Additionally, the concept of the GDC will extend into ongoing groundwater programs including the joint GBA/DWR/USGS Groundwater Recharge and Salinity Study and the Farmington Recharge Program. Over the next 20-30 years, hundreds of millions of dollars will be invested for the management of groundwater in San Joaquin County. Water demand projections, basin health, and groundwater management effectiveness is based on groundwater data. The GDC is also a commitment to the development of a comprehensive quality assurance and quality control plan (QA/QC) that increases confidence in the quality and reliability of groundwater data. The overall goals and objectives of the GDC are: 1. Create and maintain a working groundwater database for San Joaquin County. 2. Develop the tools necessary to analyze groundwater data. 3. Make groundwater information available to decision makers, agency staff, and the general public through the internet. 4. Create an efficient and enforceable QA/QC plan. 5. Utilize the proven and supported technologies in groundwater monitoring, database management, and Geographic Information Systems (GIS). GDC Features: 1. Create and maintain a workinq-groundwater database for San Joaquin County. The backbone of the GDC is the groundwater database. From the database, groundwater information can be queried and exported to groundwater analysis programs and applications. The groundwater database should have the following characteristics: • Secure from inadvertent or malicious deletions or manipulations • Efficiently designed to limit extraneous information • Expandable to include additional water quality fields, geologic data, well construction information, etc. • Portable data entry forms • Maintainable by existing staff with intermediate level database expertise Northeastern San Joaquin County Section 5 Groundwater Banking Authority 90 Groundwater Monitoring Program