Skip over navigation Home > Administrative Services > Information Technology > GIS > Overview Overview What is a GIS? A geographic information system (GIS) is a computer-based tool for mapping and analyzing things that exist and happen on the surface of the Earth. GIS technology integrates common database operations such as query and statistical analysis with the unique visualization offered by maps. These abilities distinguish GIS from other information systems and make it valuable for ...

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Your browser does not support script. Please enable the script Category: Real-time Streamflow Flood and High Flow Daily Streamflow 7-day Average Streamflow7-day Below Normal Streamflow Drought Watch Monthly Average Streamflow Recent Hydrologic Unit Streamflow Map Historical Hydrologic Unit Runoff Map Historical Hydrologic Unit Runoff Plot Geographic area: United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Dist. of Columbia Florida Georgia Hawaii Idaho ...