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  • Notice - The USGS Water Resources Mission Area's priority is to maintain the safety and well-being of our communities, including providing critical situational awareness in times of flooding in all 50 U.S. states and additional territories. Our hydrologic monitoring stations continue to send data in near real-time to NWISWeb, and we are continuing critical water monitoring activities to protect life and property on a case-by-case basis. The health and safety of the public and our employees are our highest priorities, and we continue to follow guidance from the White House, the CDC, and state and local authorities.

  • Introducing The Next Generation of USGS Water Data for the Nation
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USGS Water-Quality Historical Instantaneous Data for the Nation: Build Time Series

* IMPORTANT: Next Generation Station Page

Choose Site Selection Criteria
Choose from the following criteria to constrain the number of sites selected.   If no additional site-selection criteria are chosen and no additional specifications are defined on the following page then output will be for all 23,688 sites that have current-conditions.

          Site
   -- Location --

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          Site
   -- Identifier --

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          Site
   -- Attribute --

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          Data
   -- Attribute * --

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* Selection of more than one data attribute will include all samples that meet all conditions selected.