FAQ

Default solution folder, feel free to edit or delete it.

How do I use StreamStats?
StreamStats operates through your Web browser window. You do not need to download anything to use it. Currently, two versions are available; version 3 and b...
Mon, 25 Apr, 2016 at 4:06 PM
What if no base map appears and I can only see a gray background?
StreamStats relies on web services hosted by others for its base maps that are shown in the background to help users determine where they are on the landsca...
Thu, 28 Apr, 2016 at 10:00 AM
How are streamflow statistics determined?
The USGS currently operates a nation-wide network of about 8,000 streamgages, where streamflow is monitored continuously. Historically, the USGS also has op...
Tue, 22 Mar, 2016 at 3:13 PM
How is the information from StreamStats used?
The primary products delivered by StreamStats are streamflow statistics and basin characteristics. Examples of streamflow statistics include the 100-year fl...
Wed, 16 Mar, 2016 at 8:45 AM
How does StreamStats work?
StreamStats was initially developed through a cooperative effort of the USGS and ESRI, Inc.* It is an integrated GIS application that is partly based on a c...
Tue, 22 Mar, 2016 at 3:43 PM
What streamflow statistics and basin characteristics does StreamStats provide?
The information provided varies by State, as programming for each State is separate in StreamStats. This allows the application to be customized for the nee...
Tue, 22 Mar, 2016 at 3:46 PM
What do the error terms mean in the outputs, such as Prediction Error and Prediction Interval?
Please refer to the descriptions of these terms on the Ungaged Sites page. The section on Streamflow Statistics Tables describes the various error indicators.
Mon, 24 Jul, 2017 at 12:47 PM
Some of the statistics in the StreamStats report for a streamgage that I selected are more than 10 years old. Are there any newer values available?
The information that StreamStats provides in reports for data-collection stations is maintained in a database that must be updated by scientists who work ...
Tue, 22 Mar, 2016 at 3:51 PM
What are the blue pixelated lines? Are they real streams? Why are there so many/few of them?
We call these the “stream grid” or “synthetic stream grid”, which are used mainly as a guide for delineation. If you click off of these lines, your delineat...
Tue, 22 Mar, 2016 at 4:28 PM
What does the cross-hatching on the map mean?
StreamStats has limited functionality in some areas. These areas are indicated on the map with a cross-hatch pattern: . StreamStats either can't deline...
Mon, 11 Apr, 2016 at 10:55 AM