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NWISWeb Tutorial How to access real-time streamflow data in your watershed |
Start at http://waterdata.usgs.gov/ (this link opens in a new window). Step 1Click
the blue Real-time button. You will get a map with colored dots that indicate current streamflow conditions (high, moderate, or low streamflows) at streamgaging stations across the nation.
Step 2Click
on your state or territory on the national map. A map will appear showing
current streamflow conditions in your state. Step 3Click on Statewide Streamflow Table. You will get a list of gaging stations, identified by name and number, where streamflow is continually monitored. Also listed are current available data from each station. These data usually include gage height, streamflow, and a value for comparison--such as the average streamflow for that day. How do I interpret gage heights and streamflows? Step 4Group the Streamflow Table by Hydrologic Unit to focus on the stations in your local watershed. Click Go.
Step 5Now, find your Hydrologic Unit Code (HUC) or watershed name. What is a HUC? Then click on individual station number(s) within your HUC to get data from that station. For most stations, you will get a graph like the one below, which shows 7 days of real-time discharge (streamflow) data and historical data (median daily streamflows) for this station on the Cimarron River in New Mexico:
Step 6For
more data, change the default 7 days to a number up to 31, and click get
data. Real-time streamflow data are available for a maximum of 31 days. |