USGS WaterAlert

[ version 1.3 ] 


WATER DATA FOR THE NATION

National Water Information System

View current and historical streamflow, ground-water level, and water-quality data

Today's Water Conditions

View comparisons of current and historical conditions using maps

Click map to go to current water resources conditions in the U.S.

WATER SCIENCE SPECIALTIES

WATER SCIENCE BY STATE

USGS Water Science Centers are located in each state

USGS WaterAlert

Real-time data parameters available for subscription
The basic real-time parameters supported by WaterAlert are the following:

Surface Water:

Groundwater:

Water Quality:

Precipitation:

Streamflow
Gage height (stage)
Lake/reservoir level
Stream level
Stream velocity
Water level (depth)
Water Level (elevation)
Water temperature
Specific conductance
pH
Dissolved oxygen
Salinity
Turbidity
Total precipitation
Additional parameters are available at some sites, such as tide elevation, nitrate plus nitrite, or sensor depth. All parameters are not necessarily available at each site.

Related Services

USGS WaterNow
The USGS WaterNow service lets you send a query for a USGS gaging site, via email or cell-phone text message, and quickly receive a reply with its most recent data for one or more if its monitored parameters.
USGS National Water Information System Mapper
The National Water Information System (NWIS) provides access to data at over 1.5 million sites. There are 56 possible site types, including 14 primary types and 42 secondary types. Sites may be active or inactive, real-time or historical.
USGS Flood Inundation Mapper
Ths mapping tool shows digital, geospatial, flood-inundation maps of flood water extent and depth on the land surface, with current site conditions.