Rivers and Streams

The U.S. Geological Survey (USGS) collects data about the country's surface water, such as how much water is flowing in our streams and rivers, and when a river reaches "flood stage". Groundwater is studied—the amount of water stored in underground...
The USGS operates and maintains a nationwide streamgaging network of about 7,000 gages. Data from this network are used by a large number of public and private users, including government agencies responsible for water management and emergency response,...
Real-time streamflow data are available from the U.S. Geological Survey for over 4200 stations throughout the United States. These data are available only through the World-Wide Web.The American Whitewater Affiliation provides a compilation of web pages...
USGS real-time streamflow data typically are recorded at 15- to 60-minute intervals, stored onsite, and then transmitted to USGS offices every 1 to 4 hours, depending on the data relay technique used. Recording and transmission times may be more frequent...
Occasionally, a piece of equipment may malfunction or there may be physical problems at a station. USGS tries to correct a station or equipment problem within several days of its first occurrence, and is generally successful in meeting this goal. 
Go to the current water resources conditions site at WaterWatch for a map of real-time streamflow in the United States for the day of the year.Learn more: 'From the River to You: USGS Real-Time Streamflow Information.' 
USGS tries to correct an equipment or station problem within several days of its first occurence, and is generally successful in meeting this goal. Occasionally, replacement parts or equipment may not be readily available, or a station may be...
For streamflow records to reflect variations in climate there needs to be an absence of any other major causes that would radically alter streamflow patterns during that time. Such processes would be primarily induced by human activity, either...
Six criteria by which station records were examined for suitability for inclusion in the Hydro-Climatic Data Network (HCDN) were defined as follows:1. Availability of data in electronic form -- Because of the functional requirement to handle large...
There may be occasional equipment or database problems where erroneous data are reported for short periods of time until corrections can be made. This is why it is important to look at a record of streamflow such as the 7-day hydrograph plots rather than...