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NWISWeb Data for the Nation

Data Category
Real-time

Current-conditions data transmitted from selected surface-water, groundwater, and water-quality sites

Site information

Descriptive site information for all sites with links to all available water data for individual sites.


Surface Water

Water flow and levels in streams, lakes, and springs.

Groundwater

Water levels in wells.

Water quality

Chemical and physical data for streams, lakes, springs, and wells.

Introduction

These pages provide access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, and Puerto Rico. Online access to this data is organized around the categories listed to the left.

The USGS investigates the occurrence, quantity, quality, distribution, and movement of surface and undergroundwaters and disseminates the data to the public, State and local governments, public and private utilities, and other Federal agencies involved with managing our water resources.

About us Help System

Internal Access Only See this section.
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